770 results on '"Rectus femoris muscle"'
Search Results
2. Quantitative evaluation of the effects of several weeks of static stretching on the flexibility of the rectus femoris using shear wave elastography: a before-after study.
- Author
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Bungo Ebihara, Hayato Miyasaka, Takashi Fukaya, and Hirotaka Mutsuzaki
- Subjects
- *
YOUNG'S modulus , *SHEAR waves , *RANGE of motion of joints , *RECTUS femoris muscles , *ELASTOGRAPHY , *VOLUNTEERS - Abstract
Aim: The study aimed to quantitatively clarify the effects of several weeks of static stretching on the flexibility of the rectus femoris muscle using shear wave elastography. Material and methods: Fifteen healthy men (age: 26.4 ± 2.2 years) were instructed to perform 5 min of voluntary static stretching of their right rectus femoris muscles five times a week for four weeks. The participants adjusted their stretching intensity to a point immediately before experiencing discomfort or pain. The Young's modulus of the rectus femoris muscle and the knee-flexion range of motion were measured as indicators of flexibility. The Young's modulus was measured using shear wave elastography. Measurements were performed at baseline, as well as at two and four weeks after the stretching program started. A generalized linear mixed model was used to assess the change in the Young's modulus after the stretching program and the effects of the Young's modulus on the knee-flexion range of motion. Results: The Young's modulus of the rectus femoris muscle decreased after two and four weeks of stretching compared with the baseline (p = 0.0004 and p <0.0001, respectively). The Young's modulus of the rectus femoris muscle and the four-week duration of stretching affected the knee-flexion range of motion (p = 0.0242 and 0.0016, respectively). Conclusions: Shear wave elastography quantitatively revealed that several weeks of static stretching increased the flexibility of the rectus femoris muscle in healthy men. A four-week static stretching regimen reduced the Young's modulus of the rectus femoris muscle and increased the knee-flexion range of motion. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
3. Development of Single-Channel Dual-Element Custom-Made Ultrasound Scanner with Miniature Optical Position Tracker for Freehand Imaging.
- Author
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Chen, Yen-Lung and Chiang, Huihua Kenny
- Subjects
OPTICAL scanners ,ULTRASONIC imaging ,RESOURCE-limited settings ,RECTUS femoris muscles ,TRANSDUCERS - Abstract
Handheld ultrasound has great potential in resource-limited areas, and can improve healthcare for rural populations. Single-channel ultrasound has been widely used in many clinical ultrasound applications, and optical tracking is considered accurate and reliable. In this study, we developed a 10 MHz lead magnesium niobate–lead titanate (PMN-PT) dual-element ultrasound transducer combined with a miniature optical position tracker, and then measured the rectus femoris of the thigh, upper arm, and cheek muscles. Compared to single-element transducers, dual-element transducers improve the contrast of near-field signals, effectively reduce noise, and are suitable for measuring curved surfaces. The purpose of position tracking is to calculate the location of the ultrasound transducer during the measurement process. By utilizing positioning information, 2D ultrasound imaging can be achieved while maintaining structural integrity. The dual-element ultrasound scanner presented in this study can enable continuous scanning over a large area without a scanning width limitation. The custom-made dual-element ultrasound scanner has the advantage of being a portable, reliable, and low-cost ultrasound device, and is helpful in popularizing medical care for remote villages. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
4. The Validity of Ultrasonographic Measurements of the Rectus Femoris Muscle in Older Adults with Sarcopenia in Thai Population
- Author
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Sri-on J, Rueanthip S, Vanichkulbodee A, Paksopis T, and Chetanasilpin C
- Subjects
sarcopenia ,rectus femoris muscle ,ultrasonography ,bioelectrical impedance ,Geriatrics ,RC952-954.6 - Abstract
Jiraporn Sri-on,1 Sommapan Rueanthip,2 Alissara Vanichkulbodee,3 Thitiwan Paksopis,1 Chatbhaudin Chetanasilpin2 1Geriatric Emergency Medicine Unit, The Department of Emergency Medicine, Vajira Hospital, Navamindradhiraj University, Bangkok, Thailand; 2The Department of Emergency Medicine, Vajira Hospital, Navamindradhiraj University, Bangkok, Thailand; 3Ultrasound Emergency Unit, The Department of Emergency Medicine, Vajira Hospital, Navamindradhiraj University, Bangkok, ThailandCorrespondence: Jiraporn Sri-on, Geriatric Emergency Medicine Unit, The Department of Emergency Medicine, Vajira Hospital, Navamindradhiraj University, 681 Samsen road, Dusit, Bangkok, 10300, Thailand, Tel +66 896840010, Email Jiraporn.rew@gmail.comPurpose: This study aimed to determine the validity of ultrasonographic measurement of the rectus femoris muscle (RFM) thickness as a screening tool for low appendicular muscle mass (ASM) to diagnose sarcopenia and to determine the cut-off point of RFM thickness in the Thai population.Patients and methods: We enrolled 857 community-dwelling adults aged 60 years and older who were diagnosed with sarcopenia using the Asian Working Group for Sarcopenia-2019 algorithm. The RFM thickness was measured using ultrasonography and compared with bioelectrical impedance analysis (BIA) data. The sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) were evaluated, and the area under the receiver operating curve (AUROC) was used to determine the accuracy of the test.Results: A total of 857 participants were included in the study. Overall, when the cut-off values of RFM thickness of ≤ 1.1 cm were used for male and ≤ 1 cm for female, the highest sensitivity for sarcopenia diagnosis was 90.9% and specificity was 92.2%. The PPV was 76.6, and the NPV was the highest at 97.3. The highest sensitivity for the diagnosis of severe sarcopenia was 92.5% and specificity was 97.4%. The AUROC of the cut-off point of RFM thickness for the diagnosis of sarcopenia was 0.92 (95% confidence interval [CI], 0.89− 0.94); for severe sarcopenia, it was 0.95 (95% CI, 0.92− 0.98).Conclusion: Measuring RFM thickness using ultrasonography is a feasible and reliable screening test for sarcopenia, and the cut-off values of ≤ 1.1 cm for male and ≤ 1 cm for female showed the highest accuracy for confirming low ASM in the Thai population.Keywords: sarcopenia, rectus femoris muscle, ultrasonography, bioelectrical impedance
- Published
- 2022
5. Comparison of soccer instep kicking kinematics with and without elastic taping.
- Author
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Sato, Nahoko, Nunome, Hiroyuki, and Mizukami, Yuichi
- Abstract
The present study aimed to determine the effect of elastic taping on soccer instep kicking kinematics. Fifteen male university soccer players performed maximal instep kicking with and without Y-shaped elastic taping on the skin surface of the rectus femoris muscle. Their kicking motions were captured at 500 Hz using a motion capture system. The thickness of the rectus femoris muscle was measured using an ultrasound scanner prior to the kicking session. The thickness of the rectus femoris muscle and kicking leg kinematics in both the conditions were compared. The thickness of the rectus femoris muscle increased significantly after elastic tape application. In conjunction with this change, kinematic variables of the kicking leg, such as peak hip flexion angular velocity and knee and foot linear velocities significantly increased. However, there was no change in the knee extension angular and hip linear velocities. The elastic tape application caused deformation of the rectus femoris muscle and improvement of the instep kicking performance. The study findings provide a new insight on the effect of elastic taping on dynamic sports performance, such as in soccer instep kicking. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
6. The Falcon Test: An Observer Agreement Study in Subjects With and Without Anterior Knee Pain.
- Author
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Cibulka, Michael T., Wunderlich, Payton, Klockenga, Hayden, Reed, Andrew, and Sandman, John
- Subjects
KNEE joint ,PAIN ,RECTUS femoris muscles ,RESEARCH evaluation ,CONFIDENCE intervals ,ANTHROPOMETRY ,RESEARCH methodology ,INTER-observer reliability ,BODY movement ,DESCRIPTIVE statistics ,INTRACLASS correlation ,DATA analysis software ,EVALUATION - Abstract
Introduction A shortened rectus femoris muscle has been associated with many different musculoskeletal problems. Assessing rectus femoris muscle length is commonly performed using the Modified Thomas Test. However, this test position is often difficult to assume and there are difficulties with reliably measuring rectus femoris length. A method that that uses an easier position to assume and could be more reliable would be beneficial to therapists. The purpose of this study was to determine observer agreement using a new test for assessment of rectus femoris length. A second purpose was to determine if those with anterior knee pain have different rectus femoris muscle length than those without anterior knee pain. Method Fifty-three participants with and without anterior knee pain were enrolled. Rectus femoris muscle length was measured lying prone with the leg measured on the table while the non-measured leg was off the table in a position of 90° hip flexion. Rectus femoris muscle was lengthened by passively bending the knee until a firm end-feel. The angle of knee flexion was then measured. The process was then repeated after a brief rest period. Results Observer agreement assessing rectus femoris length using this method showed "almost perfect" reliability for both intra- and inter-rater testing: intra-rater: ICC = .99, [CI95: .98-.99], inter-rater: ICC = .96, [CI95: .92- .98]. Agreement for the sub-sample of those with anterior knee pain (N=16) showed "almost perfect" reliability for intra-rater (ICC 1,1 = .98); [CI95: 0.94-.99] and inter-rater reliability (ICC 2,1 = 0.88); [CI95: 0.70 -.95]. No differences were noted in rectus femoris length between those without and those with anterior knee pain (t= 0.82, p> 0.01); [CI95: -7.8 -3.33]; (SEM = 1.3°; MDC=3.6°). Conclusion This new method of assessing rectus femoris length is reliable between and within raters. No differences were noted in rectus femoris length between those with anterior knee pain and those without. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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- View/download PDF
7. Rectus Femoris Muscle and Phase Angle as Prognostic Factor for 12-Month Mortality in a Longitudinal Cohort of Patients with Cancer (AnyVida Trial).
- Author
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García-García, Cristina, Vegas-Aguilar, Isabel María, Rioja-Vázquez, Rosalía, Cornejo-Pareja, Isabel, Tinahones, Francisco J., and García-Almeida, José Manuel
- Abstract
Background: Cancer-related malnutrition is still unrecognized and undertreated in clinical practice. The morphofunctional assessment of disease-related malnutrition (DRM) is a new approach that focuses on evaluating changes in body composition and function. The aim of this study is to evaluate the prognostic value of classic and emerging assessment of malnutrition at 12-months survival in cancer patients. Methods. We conducted a prospective study on cancer outpatients. Bioelectrical impedance with phase angle (PhA), nutritional ultrasound by rectus femoris cross-sectional area (RFCSA), hand grip strength, and "Timed Up and Go Test" (TUG) were evaluated as predictors of mortality. Results. Fifty-seven patients were included. The non-survivors had lower PhA values than the survivors (4.7° vs. 5.4°; p < 0.001), and we had the same results with RFCSA 2.98 cm
2 /m2 vs. 4.27 cm2 /m2 (p = 0.03). Cut-off points were identified using the ROC (receiver operating characteristic) curves for PhA (≤5.6° cancer patients, ≤5.9° men, ≤5.3° women), RFCSA (≤4.47 cm2 /m2 cancer patients, ≤4.47° men, ≤2.73° women) and rectus femoris-Y-axis (RF-Y-axis; ≤1.3 cm cancer patients, ≤1.06 men, ≤1 women). In multivariate logistic regression analysis, we found that high PhA was significantly associated with a lower mortality hazard ratio (HR: 0.42 95% CI: 0.21–0.84, p = 0.014). Likewise, high RFCSA was associated with a decrease in mortality risk in the crude model (HR: 0.61 95% CI: 0.39–0.96, p = 0.031). This trend was also maintained in the adjusted models by the confounding variables. Conclusions. Low PhA and RFCSA values are significant independent predictors of mortality in cancer patients. These cut-off points are clinical data that can be used for nutritional assessment and the prediction of clinical outcomes. [ABSTRACT FROM AUTHOR]- Published
- 2023
- Full Text
- View/download PDF
8. Lymphadenectomy
- Author
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Sarpel, Umut and Sarpel, Umut
- Published
- 2021
- Full Text
- View/download PDF
9. Ultrasound Measurement of Rectus Femoris Muscle Parameters for Discriminating Sarcopenia in Community‐Dwelling Adults.
- Author
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Chen, Yen‐Lung, Liu, Peng‐Ta, Chiang, Huihua K., Lee, Si‐Huei, Lo, Yen‐Li, Yang, Yueh‐Cheng, and Chiou, Hong‐Jen
- Subjects
RECTUS femoris muscles ,SARCOPENIA ,DUAL-energy X-ray absorptiometry ,RECEIVER operating characteristic curves ,ADULTS ,MUSCLE mass - Abstract
Objectives: Sarcopenia patients require more medical attention and caretaking. As such, early detection of sarcopenia and appropriate interventions are crucial for decreasing medical costs and meeting the challenges of aging populations. The aim of the present study was to develop a reliable and accurate model to estimate muscle mass using ultrasound‐derived parameters from the rectus femoris (RF), referenced by dual‐energy X‐ray absorptiometry. Methods: Cross‐sectional study was performed. The study patients were recruited by Taipei Veterans General Hospital (No. 2016‐07‐013C) between 2016 and 2019. A total of 91 community‐dwelling adults (35 men and 56 women) were enrolled in this study. Ultrasound measurements of RF muscle thickness (MT), cross‐sectional area (CSA), and muscle volume (MV) were performed in B‐mode. Muscle strength and physical performance were also examined. Multivariate linear regression was used to build models for the prediction of appendicular skeletal muscle index (ASMI) based on MT, CSA, and MV values. The accuracy of ultrasound RF measurements for predicting sarcopenia was evaluated by using receiver operating characteristic (ROC) curve analysis. Results: The regression equations used for ASMI prediction (adjusted body mass index, sex, and leg length) had high precision and low error. Moreover, the MV model results were close to those of the CSA model and higher than those of the MT model. The ROC analysis showed that both MV and CSA had excellent discrimination when assessing sarcopenia (AUC = 0.83 and 0.81, respectively), whereas MT showed acceptable discrimination (AUC = 0.73). Conclusions: Ultrasound‐derived RF MV was accurate when predicting ASMI and diagnosing sarcopenia in community‐dwelling adults. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
10. Intra- and inter-rater reliability of rectus femoris muscle thickness measured using ultrasonography in healthy individuals
- Author
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Yosuke Takahashi, Yuji Fujino, Kohei Miura, Ayumi Toida, Tadamitsu Matsuda, and Shigeru Makita
- Subjects
Skeletal muscle mass ,Reliability ,Ultrasonography ,Rectus femoris muscle ,Medical physics. Medical radiology. Nuclear medicine ,R895-920 - Abstract
Abstract Background Ultrasonography (US) is a feasible and accessible method for the measurement of skeletal muscle mass. This technique presents acceptable intra-rater reliability; however, there are a few reports on its inter-rater reliability. Additionally, relative reliability should equally be inspected to determine the presence of systematic errors. Therefore, this study aimed to investigate the intra- and inter-rater reliabilities and absolute reliability of rectus femoris muscle thickness as measured using US. Methods The participants included in our study comprised 12 healthy young men (26.5 ± 3.9 years. Rectus femoris muscle thickness was measured from the right side of the thigh using US by two trained physical therapists. Inter- and intra-rater reliabilities were determined using the intraclass correlation coefficient (ICC) (1, 1) and ICC (2, 1) methods, respectively. Absolute reliability was evaluated using Bland − Altman analysis. Additionally, we calculated the minimal detectable change at the 95% level of confidence (MDC95). Result According to the results of the Bland − Altman analysis, no fixed or proportional errors were present. The ICC (1, 1) was 0.95, and the ICC (2, 1) was 0.70. The MDC95 values of rectus femoris thickness for the intra- and inter-rater reliabilities were 2.0 mm and 4.3 mm, respectively. Conclusions In our study, intra- and inter-rater reliabilities were measured at “excellent” and “moderate” levels in the healthy individuals based on a previously defined scale. Moreover, we determined the measurement error for quantifying rectus femoris thickness. Therefore, the measurement of rectus femoris thickness using US could be considered applicable in clinical research.
- Published
- 2021
- Full Text
- View/download PDF
11. Development of Single-Channel Dual-Element Custom-Made Ultrasound Scanner with Miniature Optical Position Tracker for Freehand Imaging
- Author
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Yen-Lung Chen and Huihua Kenny Chiang
- Subjects
ultrasound ,rectus femoris muscle ,dual-element ultrasound transducer ,optical tracker ,custom-made ultrasound transducer ,ultrasound scanner ,Biotechnology ,TP248.13-248.65 - Abstract
Handheld ultrasound has great potential in resource-limited areas, and can improve healthcare for rural populations. Single-channel ultrasound has been widely used in many clinical ultrasound applications, and optical tracking is considered accurate and reliable. In this study, we developed a 10 MHz lead magnesium niobate–lead titanate (PMN-PT) dual-element ultrasound transducer combined with a miniature optical position tracker, and then measured the rectus femoris of the thigh, upper arm, and cheek muscles. Compared to single-element transducers, dual-element transducers improve the contrast of near-field signals, effectively reduce noise, and are suitable for measuring curved surfaces. The purpose of position tracking is to calculate the location of the ultrasound transducer during the measurement process. By utilizing positioning information, 2D ultrasound imaging can be achieved while maintaining structural integrity. The dual-element ultrasound scanner presented in this study can enable continuous scanning over a large area without a scanning width limitation. The custom-made dual-element ultrasound scanner has the advantage of being a portable, reliable, and low-cost ultrasound device, and is helpful in popularizing medical care for remote villages.
- Published
- 2023
- Full Text
- View/download PDF
12. Rectus Femoris Muscle and Phase Angle as Prognostic Factor for 12-Month Mortality in a Longitudinal Cohort of Patients with Cancer (AnyVida Trial)
- Author
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Cristina García-García, Isabel María Vegas-Aguilar, Rosalía Rioja-Vázquez, Isabel Cornejo-Pareja, Francisco J. Tinahones, and José Manuel García-Almeida
- Subjects
cancer ,disease-related malnutrition ,bioelectrical impedance ,phase angle ,rectus femoris muscle ,mortality ,Nutrition. Foods and food supply ,TX341-641 - Abstract
Background: Cancer-related malnutrition is still unrecognized and undertreated in clinical practice. The morphofunctional assessment of disease-related malnutrition (DRM) is a new approach that focuses on evaluating changes in body composition and function. The aim of this study is to evaluate the prognostic value of classic and emerging assessment of malnutrition at 12-months survival in cancer patients. Methods. We conducted a prospective study on cancer outpatients. Bioelectrical impedance with phase angle (PhA), nutritional ultrasound by rectus femoris cross-sectional area (RFCSA), hand grip strength, and “Timed Up and Go Test” (TUG) were evaluated as predictors of mortality. Results. Fifty-seven patients were included. The non-survivors had lower PhA values than the survivors (4.7° vs. 5.4°; p < 0.001), and we had the same results with RFCSA 2.98 cm2/m2 vs. 4.27 cm2/m2 (p = 0.03). Cut-off points were identified using the ROC (receiver operating characteristic) curves for PhA (≤5.6° cancer patients, ≤5.9° men, ≤5.3° women), RFCSA (≤4.47 cm2/m2 cancer patients, ≤4.47° men, ≤2.73° women) and rectus femoris-Y-axis (RF-Y-axis; ≤1.3 cm cancer patients, ≤1.06 men, ≤1 women). In multivariate logistic regression analysis, we found that high PhA was significantly associated with a lower mortality hazard ratio (HR: 0.42 95% CI: 0.21–0.84, p = 0.014). Likewise, high RFCSA was associated with a decrease in mortality risk in the crude model (HR: 0.61 95% CI: 0.39–0.96, p = 0.031). This trend was also maintained in the adjusted models by the confounding variables. Conclusions. Low PhA and RFCSA values are significant independent predictors of mortality in cancer patients. These cut-off points are clinical data that can be used for nutritional assessment and the prediction of clinical outcomes.
- Published
- 2023
- Full Text
- View/download PDF
13. 膝関節屈曲に対する大腿直筋の形状変化に関する一考察.
- Author
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篠原 博, 細見 亮太, 羽場 俊広, 小幡 太志, 寺嶋 佑真, and 森田 祐一
- Abstract
Since the rectus femoris muscle is associated with trauma and disorders such as muscle strain, it is often a target for evaluation and treatment. However, in many studies, measurement results were obtained from only a part of the rectus femoris muscle and used as a representative value without considering the differences across the muscle. The rectus femoris muscle may change shape with knee flexion because the structure is complicated; it has an intramuscular tendon. The purpose of this study was to assess the changes in shape of the rectus femoris muscle during flexion of the knee joint in different directions. Twelve lower limbs of 12 male university students were analyzed. The rectus femoris muscle was divided into eight parts, and short-axis images were taken with an ultrasonic diagnostic imaging device at the knee joint; in extension; flexion at 30 °, 60 °, 90 °, and 120 °; muscle thickness; muscle width; and cross-sectional area. It was suggested that the thickness of the rectus femoris muscle increased from “A” to “F” due to knee flexion, and that this increase occurred because of stretching at the same site. In “G,” there was no difference between the angle conditions; conversely, in “H,” the muscle thickness decreased due to knee flexion. It should also be noted that D and E have the greatest muscle thickness when measuring in the knee flexion position. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
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14. The Importance of Imaging in the Diagnosis of Rectus Femoris Pyomyositis in a 35Day-Old-Infant
- Author
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Nurdan Uraş and İsmail Uras
- Subjects
pyomyositis ,rectus femoris muscle ,septic arthritis ,Medicine (General) ,R5-920 - Abstract
Pyomyositis affecting the muscles around the hip may present with characteristics similar to those bof septic arthritis, which are challenging to diagnose due to their rare and vague presentation. Herein, we present a 35-day-old –male nfant with fever, restriction of hip and right limp movement and magnetic resonance imaging finding indicating rectus femoris pyomyositis.
- Published
- 2020
- Full Text
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15. Intra- and inter-rater reliability of rectus femoris muscle thickness measured using ultrasonography in healthy individuals.
- Author
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Takahashi, Yosuke, Fujino, Yuji, Miura, Kohei, Toida, Ayumi, Matsuda, Tadamitsu, and Makita, Shigeru
- Subjects
RECTUS femoris muscles ,ULTRASONIC imaging ,PHYSICAL therapists ,INTRACLASS correlation ,CLINICAL trials - Abstract
Background: Ultrasonography (US) is a feasible and accessible method for the measurement of skeletal muscle mass. This technique presents acceptable intra-rater reliability; however, there are a few reports on its inter-rater reliability. Additionally, relative reliability should equally be inspected to determine the presence of systematic errors. Therefore, this study aimed to investigate the intra- and inter-rater reliabilities and absolute reliability of rectus femoris muscle thickness as measured using US. Methods: The participants included in our study comprised 12 healthy young men (26.5 ± 3.9 years. Rectus femoris muscle thickness was measured from the right side of the thigh using US by two trained physical therapists. Inter- and intra-rater reliabilities were determined using the intraclass correlation coefficient (ICC) (1, 1) and ICC (2, 1) methods, respectively. Absolute reliability was evaluated using Bland − Altman analysis. Additionally, we calculated the minimal detectable change at the 95% level of confidence (MDC
95 ). Result: According to the results of the Bland − Altman analysis, no fixed or proportional errors were present. The ICC (1, 1) was 0.95, and the ICC (2, 1) was 0.70. The MDC95 values of rectus femoris thickness for the intra- and inter-rater reliabilities were 2.0 mm and 4.3 mm, respectively. Conclusions: In our study, intra- and inter-rater reliabilities were measured at "excellent" and "moderate" levels in the healthy individuals based on a previously defined scale. Moreover, we determined the measurement error for quantifying rectus femoris thickness. Therefore, the measurement of rectus femoris thickness using US could be considered applicable in clinical research. [ABSTRACT FROM AUTHOR]- Published
- 2021
- Full Text
- View/download PDF
16. Smaller rectus femoris size measured by ultrasound is associated with poorer outcomes after cardiac surgery.
- Author
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Ben-Menachem, Erez, Ashes, Catherine, Lepar, Gila, Deacon, James, Glavan, Nicole, Molan, Veronique, and Watson, Alasdair
- Abstract
We sought to evaluate the association of low rectus femoris cross-sectional area (RFCSA) with hospital length of stay and poorer outcomes in patients undergoing cardiac surgery. A single right-leg RFCSA was measured with ultrasound preoperatively and baseline characteristics, clinical data, and outcomes recorded. Patients were categorized as low rectus femoris muscle size (lowRF) or normal rectus femoris muscle size (normalRF), if they were in the lowest quartile or not, respectively. All analyses were performed on both body surface area (BSA)- and sex-adjusted RFCSA. One hundred eight-four patients had a RFCSA measured with a mean of 5.01 cm
2 (1.41 cm2 ), and range of 0.71 to 8.77 cm2 . When analyzing the BSA-adjusted RFCSA, we found the lowRF group had a longer hospital stay, 11.0 days [7.0-16.3] versus 8.0 days [6.0-10.0] for the normalRF group (P <.001), and a greater proportion of extended hospital stay (≥18.5 days) of 19.6% compared with 6.2% (P =.010). When the RFCSA was adjusted for sex, the lowRF group had a greater length of hospital stay, 9.0 days [7.0-14.5] versus 8.0 days [6.0-11.0] (P =.049). In both the BSA- and sex-adjusted RFCSA, the lowRF group suffered greater morbidity and were more likely discharged to a destination other than home. In multivariate analyses adjusting for European System for Cardiac Operative Risk Evaluation II, BSA-adjusted lowRF but not sex-adjusted lowRF was independently associated with log-transformed hospital length of stay. LowRF was not independently associated with increased major morbidity and death for both BSA and sex-adjusted RFCSA. Low RFCSA has a significant association with increased hospital length of stay, morbidity, and nonhome discharge in patients undergoing cardiac procedures. ACTRN12620000678998. [Display omitted] A single right leg rectus femoris cross-sectional area (RFCSA) was measured by ultrasound. Patients were divided into low (lowRF—lowest quartile) or normal (normalRF—upper three quartiles) rectus femoris muscle size based on body surface area and sex-adjusted RFCSA. [Display omitted] [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
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17. Movement History Influences Pendulum Test Kinematics in Children With Spastic Cerebral Palsy
- Author
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Jente Willaert, Kaat Desloovere, Anja Van Campenhout, Lena H. Ting, and Friedl De Groote
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stretch reflex ,hyperreflexia ,thixotropy ,instrumented assessment of spasticity ,rectus femoris muscle ,joint hyper-resistance ,Biotechnology ,TP248.13-248.65 - Abstract
The pendulum test assesses quadriceps spasticity by dropping the lower leg of a relaxed patient from the horizontal position and observing limb movement. The first swing excursion (FS) decreases with increasing spasticity severity. Our recent simulation study suggests that the reduced initial swing results from muscle short-range stiffness and its interaction with reflex hyper-excitability. Short-range stiffness emerges from the thixotropic behavior of muscles where fiber stiffness upon stretch increases when the muscle is held isometric. Fiber stiffness might thus be higher during the first swing of the pendulum test than during consecutive swings. In addition, it has recently been suggested that muscle spindle firing reflects fiber force rather than velocity and therefore, reflex activity might depend on fiber stiffness. If this hypothesized mechanism is true, we expect to observe larger first swing excursions and reduced reflex muscle activity when the leg is moved rather than kept isometric before release, especially in patients with increased reflex activity. We performed the pendulum test in 15 children with cerebral palsy (CP) and 15 age-matched typically developing (TD) children in two conditions. In the hold condition, the leg was kept isometric in the extended position before release. In the movement condition, the leg was moved up and down before release to reduce the contribution of short-range stiffness. Knee kinematics and muscle activity were recorded. Moving the leg before release increased first swing excursion (p < 0.001) and this increase was larger in children with CP (21°) than in TD children (8°) (p < 0.005). In addition, pre-movement delayed reflex onset by 87 ms (p < 0.05) and reduced reflex activity as assessed through the area under the curve of rectus femoris electromyography (p < 0.05) in children with CP. The movement history dependence of pendulum kinematics and reflex activity supports our hypothesis that muscle short-range stiffness and its interaction with reflex hyper-excitability contribute to joint hyper-resistance in spastic CP. Our results have implications for standardizing movement history in clinical tests of spasticity and for understanding the role of spasticity in functional movements, where movement history differs from movement history in clinical tests.
- Published
- 2020
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18. Central Tendon Injury Impairs Regional Neuromuscular Activation of the Rectus Femoris Muscle
- Author
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Yoshiaki Kubo, Kohei Watanabe, Koichi Nakazato, Koji Koyama, and Kenji Hiranuma
- Subjects
rectus femoris muscle ,muscle strain injury ,electromyography ,physiology ,sports medicine ,Sports ,GV557-1198.995 - Abstract
We aimed to uncover which rectus femoris strain injury types affect regional activation within the rectus femoris. The rectus femoris has a region-specific functional role; the proximal region of the rectus femoris contributes more than the middle and distal regions during hip flexion. Although a history of strain injury modifies the region-specific functional role within the rectus femoris, it was not obvious which rectus femoris strain injury types affect regional activation within it. We studied 12 soccer players with a history of rectus femoris strain injury. Injury data were obtained from a questionnaire survey and magnetic resonance imaging. To confirm the region-specific functional role of the rectus femoris, surface multichannel electromyographic signals were recorded. Accordingly, eight legs had a history of central tendon injury, four had a history of myofascial junction injury, and four had a healed strain injury. When the injury was limited to the central tendon, the region-specific functional role disappeared. The region-specific functional role was confirmed when the injury was outside the central part. The neuromuscular function was also inhibited when the longitudinal range of the injured region was long. Our findings suggest that a central tendon injury with a long injury length impairs regional neuromuscular activation of the rectus femoris muscle.
- Published
- 2021
- Full Text
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19. Urinary Titin Is a Novel Biomarker for Muscle Atrophy in Nonsurgical Critically Ill Patients: A Two-Center, Prospective Observational Study.
- Author
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Nobuto Nakanishi, Rie Tsutsumi, Kanako Hara, Takuya Takashima, Emiko Nakataki, Taiga Itagaki, Masafumi Matsuo, Jun Oto, Hiroshi Sakaue, Nakanishi, Nobuto, Tsutsumi, Rie, Hara, Kanako, Takashima, Takuya, Nakataki, Emiko, Itagaki, Taiga, Matsuo, Masafumi, Oto, Jun, and Sakaue, Hiroshi
- Subjects
- *
MUSCULAR atrophy , *INTENSIVE care units , *LENGTH of stay in hospitals , *ULTRASONIC imaging , *DIAPHRAGM (Anatomy) , *HOSPITAL mortality , *MUSCLE weakness , *CATASTROPHIC illness , *QUADRICEPS muscle , *LONGITUDINAL method , *CREATININE - Abstract
Objectives: Although skeletal muscle atrophy is common in critically ill patients, biomarkers associated with muscle atrophy have not been identified reliably. Titin is a spring-like protein found in muscles and has become a measurable biomarker for muscle breakdown. We hypothesized that urinary titin is useful for monitoring muscle atrophy in critically ill patients. Therefore, we investigated urinary titin level and its association with muscle atrophy in critically ill patients.Design: Two-center, prospective observational study.Setting: Mixed medical/surgical ICU in Japan.Patients: Nonsurgical adult patients who were expected to remain in ICU for greater than 5 days.Interventions: None.Measurements and Main Results: Urine samples were collected on days 1, 2, 3, 5, and 7 of ICU admission. To assess muscle atrophy, rectus femoris cross-sectional area and diaphragm thickness were measured with ultrasound on days 1, 3, 5, and 7. Secondary outcomes included its relationship with ICU-acquired weakness, ICU Mobility Scale, and ICU mortality. Fifty-six patients and 232 urinary titin measurements were included. Urinary titin (normal range: 1-3 pmol/mg creatinine) was 27.9 (16.8-59.6), 47.6 (23.5-82.4), 46.6 (24.4-97.6), 38.4 (23.6-83.0), and 49.3 (27.4-92.6) pmol/mg creatinine on days 1, 2, 3, 5, and 7, respectively. Cumulative urinary titin level was significantly associated with rectus femoris muscle atrophy on days 3-7 (p ≤ 0.03), although urinary titin level was not associated with change in diaphragm thickness (p = 0.31-0.45). Furthermore, cumulative urinary titin level was associated with occurrence of ICU-acquired weakness (p = 0.01) and ICU mortality (p = 0.02) but not with ICU Mobility Scale (p = 0.18).Conclusions: In nonsurgical critically ill patients, urinary titin level increased 10-30 times compared with the normal level. The increased urinary titin level was associated with lower limb muscle atrophy, occurrence of ICU-acquired weakness, and ICU mortality. [ABSTRACT FROM AUTHOR]- Published
- 2020
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20. Proximaler Ausriss der Sehne des M. rectus femoris: Fallbeschreibung und Literaturübersicht.
- Author
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Neetz, Christine and Linhart, Wolfgang
- Abstract
Copyright of Der Unfallchirurg is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2020
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21. Clinical significance of rectus femoris diameter in heart failure patients.
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Sato, Yoshimi, Shiraishi, Hirokazu, Nakanishi, Naohiko, Zen, Kan, Nakamura, Takeshi, Yamano, Tetsuhiro, Shirayama, Takeshi, and Matoba, Satoaki
- Subjects
- *
RECTUS femoris muscles , *HEART failure patients , *MUSCLE strength , *EXERCISE tests , *SKELETAL muscle - Abstract
Heart failure (HF) is often accompanied by skeletal muscle weakness and exercise intolerance, which are known as prognostic factors of HF. Comprehensive evaluation of physical function is important, but it is not commonly conducted because of the lack of equipment or appropriate expertise. Measurement of rectus femoris diameter (RFD) by ultrasound is convenient and noninvasive, but it has not been clarified that RFD could represent physical functions in HF patients. This study evaluated 185 consecutive HF patients and underwent assessment including RFD, grip power (GP), knee extension strength (KES), skeletal muscle index (SMI), nutrition status, cardiopulmonary exercise testing, and New York Heart Association (NYHA) functional class. RFD was related with NYHA class and significantly correlated with GP, KES, SMI, body mass index, pre-albumin level, geriatric nutritional risk index, and peak VO2 (r = 0.631, 0.676, 0.510, 0.568, 0.380, 0.539, 0.527, respectively; p < 0.001). Multivariate regression analysis revealed that estimated glomerular filtration rate (β = 0.551) and RFD (β = 0.326) were predictive factors of peak VO2. Gender, age, brain natriuretic peptide level, left ventricular ejection fraction, and hemoglobin level were the other explanatory parameters. The cut off value of RFD for sarcopenia diagnosis was estimated as 15 mm (sensitivity = 0.767 and specificity = 0.808). RFD is a simple and useful marker which reflects skeletal muscle strength/volume, exercise tolerance, nutrition status, and NYHA class. It is also associated with sarcopenia in HF patients. [ABSTRACT FROM AUTHOR]
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- 2020
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22. Oberschenkelmuskellappen bei inguinalen postoperativen Komplikationen in der Gefäßchirurgie: Musculus sartorius vs. Musculus rectus femoris.
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Wübbeke, L. F., Keschenau, P. R., Kotelis, D., Daemen, J. H. C., Jacobs, M. J., and Mees, B. M. E.
- Abstract
Background: Inguinal wound complications often cause postoperative morbidity and also mortality following vascular surgical interventions. The aim of this study was to report experiences and a comparison of the outcomes using rectus femoris muscle flaps (RFF) and sartorius muscle flaps (SMF). Material and methods: A retrospective study was performed at two locations of a cross-border vascular center and all muscle flap interventions performed at the two centers within the vascular surgery department were reviewed. Primary outcomes were muscle flap survival, graft salvage and major amputations. Results: A total of 44 RFFs were performed in 39 patients (mean age 67 years, 73% males) and 25 SMFs in 24 patients (mean age 64 years, 76% males). Wound infections were the most common indications for muscle flap reconstruction. At a mean follow-up of 24 months (±24) and 17 months (±20), respectively, comparable flap survival rates (91% vs. 84%), wound healing rates (72% vs. 83%), graft salvage (65% vs. 73%) and amputation rates (9% vs. 8%) were found. Conclusion: Muscle flap reconstruction is an effective way to cover groin defects resulting from deep wound infections after vascular surgery, achieving good results in a high-risk group of patients. No differences were found between SMF and RFF regarding amputation and graft loss. Both techniques can be safely performed, depending on the preference and experience of the surgical team. The RFF technique should be preferentially used to cover large tissue defects, whereas the SMF procedure can be preferred to cover smaller defects in the groin. [ABSTRACT FROM AUTHOR]
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- 2020
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23. Should proximal ruptures of the anterior rectus femoris muscle be treated surgically?
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Olivier Barbier, Frédéric Khiami, Choufani Camille, Hopital d'instruction des armées Sainte-Anne [Toulon] (HIA), Service de Chirurgie Orthopédique et Traumatologique [CHU Pitié-Salpêtrière], CHU Pitié-Salpêtrière [AP-HP], Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Service de chirurgie orthopédique et traumatologique [CHU Pitié-Salpêtrière], and Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)
- Subjects
Quadriceps muscle ,medicine.medical_specialty ,[SDV.MHEP.CHI]Life Sciences [q-bio]/Human health and pathology/Surgery ,Rectus femoris muscle ,Tendons ,Course of action ,Lesion ,Avulsion ,03 medical and health sciences ,symbols.namesake ,0302 clinical medicine ,Hematoma ,Tendinitis ,Suture (anatomy) ,Tendon Injuries ,medicine ,Humans ,Orthopedics and Sports Medicine ,Fisher's exact test ,Rupture ,030222 orthopedics ,business.industry ,030229 sport sciences ,medicine.disease ,Avulsion fractures ,3. Good health ,Surgery ,Tendinopathy ,symbols ,medicine.symptom ,business - Abstract
International audience; Purpose: No therapeutic consensus has been established about proximal ruptures of the rectus femoris muscle. The objective of this literature review is to determine a therapeutic course of action. Methods: We conducted a literature review on the PubMed database using the following keywords (in French and English, respectively): "quadriceps/quadriceps", "droit ant erieur/rectus femoris", "proximal/ proximal", "chirurgie/surgical", "avulsion/avulsion". We collected 266 articles, 36 of them were selected, which were related to our topic: proximal rupture of the anterior rectus femoris. Patients with a proximal rupture of the rectus femoris, minor or major patient of traumatic origin were included in this study. Patients injured at another lesion level, or non-traumatic lesions of the proximal rectus femoris (tendinitis without ruptures, tumor or others) were excluded. For each patient, the indications, the type of treatment and the functional result were analyzed, with the time to recovery and the level of recovery from sports and professional activities (same sport/profession or not, same level or not) as the main criterion of judgment. Fisher exact test was used for statistical comparison. Results: The aims of conservative treatment are to be pain free for the patient, to fight hematoma and to rehabilitate the injury as quickly as possible. The surgical techniques are varied, with most consisting of either a reinsertion of the musculo-tendon stump or a resection of the scar tissue with myo-tendinoaponeurotic suture in place. The functional results are good for the majority of the treatments proposed, but the conservative treatment has a shorter recovery time (3 months vs. 4 months for the best surgical results). Highly displaced bone avulsion is the only indication for first-line surgical treatment. Conclusion: The main disadvantage of conservative treatment is the risk of residual pain beyond 3 months (10%), justifying an MRI to guide secondary surgical treatment. We propose a treatment plan for proximal rupture of the proximal rectus femoris rupture.
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- 2022
24. Association Between Injury Mechanisms and Magnetic Resonance Imaging Findings in Rectus Femoris Injuries in 105 Professional Football Players
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Rodney Whiteley, Rafael Cristiano Geiss Santos, Eduardo Yamashiro, Andreas Serner, Abdulaziz Farooq, Louis Holtzhausen, Johannes L. Tol, Frank Van Hellemnondt, Orthopedic Surgery and Sports Medicine, AMS - Musculoskeletal Health, and AMS - Sports
- Subjects
Male ,medicine.medical_specialty ,football ,quadriceps ,Sports medicine ,Poison control ,Physical Therapy, Sports Therapy and Rehabilitation ,Rectus femoris muscle ,Thigh ,Quadriceps Muscle ,Injury prevention ,medicine ,Humans ,Orthopedics and Sports Medicine ,Prospective Studies ,Prospective cohort study ,rectus femoris ,Retrospective Studies ,Rupture ,business.industry ,muscle injuries ,imaging ,Retrospective cohort study ,thigh ,Magnetic Resonance Imaging ,Tendon ,medicine.anatomical_structure ,Athletic Injuries ,Physical therapy ,business - Abstract
Objective To describe the injury mechanism and its association with magnetic resonance imaging (MRI) injury findings in acute rectus femoris injuries. Design Combined retrospective and prospective descriptive injury study. Retrospective cohort from January 2010 to October 2013 and prospective cohort from October 2013 to January 2019. Setting Specialized sports medicine hospital. Participants Male professional football players older than 18 years playing in a national football league, referred for injury assessment within 7 days after an acute rectus femoris injury, with a positive finding on MRI. Independent variables Rectus femoris muscle injury MRI findings in relation to injury mechanism in male football players. Main outcome measures Rectus femoris injury mechanism (kicking, sprinting, and others), MRI injury location, and grade. Results There were 105 injuries in total, with 60 (57.1%) and 45 (42.8%) injuries from the retrospective and prospective cohorts, respectively. Kicking was the injury mechanism in 57 (54.3%) of all acute rectus femoris injuries, sprinting represented 32 (30.4%), and 16 (15.2%) were classified as others. There were 20 (19.05%) free tendon, 67 (63.8%) myotendinous junction and/or intramuscular tendon, and 18 (17.1%) peripheral myofascial located injuries. All free tendon injuries were related to kicking and graded as a complete tear of at least one of the tendons in 15/20 (75.0%) cases. Conclusions Kicking seems to be an important mechanism related to complete ruptures and injuries occurring at the proximal free tendon. Sprinting was the other most common mechanism but was never associated with injury to the proximal free tendon.
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- 2022
25. Increased pelvic mobility and altered hip muscles contraction patterns: two-year follow-up cam-FAIS corrective surgery.
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Catelli, Danilo S, Kowalski, Erik, Beaulé, Paul E, and Lamontagne, Mario
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COCCYX ,FEMORACETABULAR impingement ,PATIENT satisfaction - Abstract
Femoroacetabular impingement syndrome (FAIS) surgery can produce improvements in function and patient satisfaction; however, data on muscle assessment and kinematics of high mobility tasks of post-operative patients is limited. The purpose of this study was to evaluate kinematics and muscle activity during a deep squat task, as well as muscle strength in a 2-year follow-up FAIS corrective surgery. Eleven cam morphology patients underwent motion and electromyography capture while performing a squat task prior and 2-years after osteochondroplasty and were BMI-, age- and sex-matched to 11 healthy control (CTRL) participants. Isometric muscle strength, flexibility and patient-reported outcome measures (PROMs) were also evaluated. Post-operative FAIS was significantly weaker during hip flexion (23%) and hip flexion-with-abduction (25%) movements when compared with CTRL, no improvements in squat depth were observed. However, post-operative FAIS increased the pelvic range of motion during the squat descent (P = 0.016) and ascent (P = 0.047). They had greater peak activity for the semitendinosus and total muscle activity for the gluteus medius, but decreased peak activity for the glutei and rectus femoris during squat descent; greater total muscle activity for the tensor fascia latae was observed during squat ascent (P = 0.005). Although not improving squat depth, post-operative patients increased pelvic ROM and showed positive PROMs. The muscle weakness associated with hip flexion and flexion-with-abduction observed at the follow-up can be associated with the alterations in the muscle activity and neuromuscular patterns. Rehabilitation programs should focus on increasing pelvis and hip muscles flexibility and strength. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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26. Anatomical variants of the rectus femoris motor innervation.
- Author
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Plante, Dominic, Janelle, Nicolas, Angers-Goulet, Mathieu, Corbeil, Philippe, Takech, Mohamad Ali, and Belzile, Etienne L
- Subjects
OSTEOTOMY ,FEMORAL nerve - Abstract
Adult periacetabular osteotomy (PAO) was originally performed through the classic Smith-Petersen approach for optimal operative visibility and acetabular fragment correction. Evolution towards an abductor-sparing technique significantly lowered the post-operative morbidity. The rectus-sparing approach represents a step further, but the innervation of the rectus femoris is theoretically more at risk. Although the topographic anatomy of the femoral nerve has been well described, it was never studied with specificity to surgical landmarks. The femoral nerve's spatial relation with the anterior-inferior iliac spine (AIIS) and the amount of possible dissection in the rectus femoris and iliopsoas interval is uncertain. Seven formalin-preserved human cadaveric specimens without history of inguinal injury or surgery were dissected using the distal limb of an iliofemoral approach. The level of entry of motor innervation was measured and number of branches to the rectus femoris was noted. The average longitudinal distance from the AIIS to the first motor nerve to the rectus femoris was 8.6 ± 1.4 cm. The number of branches varied between 1 and 4 with the most common innervation pattern being composed of two segments. Dissection medial to the rectus femoris should not be carried out further than 7 cm distal to the AIIS and stretching of that interval during surgical exposure should be done cautiously. The clinical efficiency of the rectus-sparing approach should be studied further in order to confirm its advantage over the classic direct anterior approach. The study provides a better understanding of the localization and the anatomical variations of the structures encountered at the level of and below the AIIS. It also assesses the relative risk of denervation of the rectus femoris during PAO through the rectus-sparing approach. The authors recommend that the dissection medial to the rectus femoris should be carried out no further than 7 cm distal to the AIIS and stretching of that interval during surgical exposure should be done cautiously. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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27. Intramuscular tetanus neurotoxin reverses muscle atrophy: a randomized controlled trial in dogs with spinal cord injury
- Author
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Angelika Mönnich, Anja Manig, Martin Deutschland, David Liebetanz, Anna Kutschenko, Beatrice Bryl, Cécile-Simone Alexander, and Stefan Hesse
- Subjects
Tetanus neurotoxin ,Hindlimb ,Rectus femoris muscle ,Spinal cord injury ,Diseases of the musculoskeletal system ,Placebo ,03 medical and health sciences ,0302 clinical medicine ,Lumbar ,Dogs ,Tetanus Toxin ,Paraparesis ,Physiology (medical) ,Animals ,Medicine ,Orthopedics and Sports Medicine ,Spinal Cord Injuries ,Gluteus medius muscle ,030304 developmental biology ,Paraplegia ,0303 health sciences ,business.industry ,QM1-695 ,Metalloendopeptidases ,medicine.disease ,Muscle atrophy ,3. Good health ,body regions ,Disease Models, Animal ,Muscular Atrophy ,RC925-935 ,Anesthesia ,Human anatomy ,Quality of Life ,Muscle thickness ,medicine.symptom ,business ,030217 neurology & neurosurgery - Abstract
Background Motor symptoms of spinal cord injury (SCI) considerably impair quality of life and are associated with a high risk of secondary diseases. So far, no pharmacological treatment is available for these symptoms. Therefore, we conducted a randomized, double‐blinded, placebo‐controlled study in dogs with spontaneous SCI due to disc herniation to test whether a reduction of spinal inhibitory activity by intramuscular injections of tetanus neurotoxin (TeNT) alleviates motor symptoms such as muscle atrophy or gait function. Methods To this end, 25 dogs were treated with injections of either TeNT or placebo into their paretic hindlimb muscles. Effects of TeNT on muscle thickness were assessed by ultrasound, while effects on gait function were measured using the modified functional scoring system in dogs. Results Four weeks after the TeNT injections, muscle thickness of the gluteus medius muscle (before median 1.56 cm [inter‐quartile range {IQR} 1.34–1.71 cm] and after median 1.56 cm [IQR 1.37–1.85 cm], P‐value 0.0133) as well as of the rectus femoris muscle (before median 0.76 cm [IQR 0.60–0.98 cm] and after median 0.93 cm [IQR 0.65–1.05 cm], P‐value 0.0033) significantly increased in the TeNT group. However, there was no difference in gait function between the TeNT and placebo groups. The treatment was well tolerated by all dogs without any signs of generalized tetanus symptoms or any spreading of effects beyond the lumbar level of the injected hindlimbs. Conclusions With regard to the beneficial effects on muscle thickness, intramuscular injections of TeNT represent the first pharmacological approach that focally reverses muscle atrophy in SCI. Moreover, the study data support the safety of this treatment when TeNT is used at low dose.
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- 2022
28. Influence of a Specified Probe Axial Preload on Strain Ultrasound Elastography for the Quantification of Rectus Femoris Muscle Elasticity
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ISHIDA, Hiroshi and SUEHIRO, Tadanobu
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elastography ,strain ratio ,rectus femoris muscle ,ultrasound ,elasticity - Published
- 2022
29. Ultrasound assessment of muscle mass has potential to identify patients with low muscularity at intensive care unit admission: A retrospective study
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Yuko Ono, Joji Kotani, Yuta Arai, Shigeaki Inoue, Jun Oto, Nobuto Nakanishi, and Masafumi Harada
- Subjects
Male ,medicine.medical_specialty ,Critical Illness ,Endocrinology, Diabetes and Metabolism ,Rectus femoris muscle ,Muscle mass ,law.invention ,law ,Ultrasound ,medicine ,Humans ,Intensive care unit ,Muscle, Skeletal ,Computed tomography ,Aged ,Retrospective Studies ,Ultrasonography ,Aged, 80 and over ,Nutrition and Dietetics ,business.industry ,Skeletal muscle ,Retrospective cohort study ,Middle Aged ,Diaphragm (structural system) ,Intensive Care Units ,medicine.anatomical_structure ,Biomarker (medicine) ,Female ,Radiology ,business - Abstract
Background & aims: Muscle mass is an important biomarker of survival from a critical illness; however, there is no widely accepted method for routine assessment of low muscularity at intensive care unit (ICU) admission. We hypothesize that ultrasound-based partial muscle mass assessments can reflect the trunk muscle mass. Therefore, we aimed to investigate whether ultrasound muscle mass measurements could reflect trunk muscle mass and identify patients with low muscularity. Methods: We performed a retrospective analysis of prospectively obtained ultrasound data at ICU admission. We included patients who underwent computed tomography (CT) imaging at the third lumbar vertebra (L3) within 2 days before and 2 days after ICU admission. Primary outcomes included the correlation between the femoral muscle mass measurements using ultrasound and the cross-sectional area (CSA) at L3 obtained by CT. Low muscularity was defined as a skeletal muscle index of 36.0 cm2/m2 for males and 29.0 cm2/m2 for females. Secondary outcomes included the correlation with the ultrasound measurements of the biceps brachii muscle mass and diaphragm thickness. Results: Among 133 patients, 89 underwent CT imaging, which included the L3. The patient mean age was 72 ± 13 years, and 60 patients (67%) were male. The correlation between the femoral muscle ultrasound and CT was ρ = 0.57 (p < 0.01, n = 89) and ρ = 0.48 (p < 0.01, n = 89) for quadriceps muscle layer thickness and rectus femoris muscle CSA, and these had the discriminative power to assess low muscularity, with the areas under the curve of 0.84 and 0.76, respectively. The ultrasound measurements of the biceps brachii muscle mass and diaphragm thickness were correlated with CT imaging [ρ = 0.57–0.60 (p < 0.01, n = 52) and ρ = 0.35 (p < 0.01, n = 79)]. Conclusions: Ultrasound measurements of muscle mass were correlated with CT measurements, and the measurements of femoral muscle mass were useful to assess low muscularity at ICU admission.
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- 2021
30. ICU入室時の超音波による筋量測定の有用性についての検討
- Author
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Arai, Yuta, Nakanishi, Nobuto, Ono, Yuko, Inoue, Shigeaki, Kotani, Joji, Harada, Masafumi, and Oto, Jun
- Subjects
Rectus femoris muscle ,Ultrasound ,Muscle mass ,Intensive care unit ,Computed tomography - Abstract
Background & aims: Muscle mass is an important biomarker of survival from a critical illness; however, there is no widely accepted method for routine assessment of low muscularity at intensive care unit (ICU) admission. We hypothesize that ultrasound-based partial muscle mass assessments can reflect the trunk muscle mass. Therefore, we aimed to investigate whether ultrasound muscle mass measurements could reflect trunk muscle mass and identify patients with low muscularity. Methods: We performed a retrospective analysis of prospectively obtained ultrasound data at ICU admission. We included patients who underwent computed tomography (CT) imaging at the third lumbar vertebra (L3) within 2 days before and 2 days after ICU admission. Primary outcomes included the correlation between the femoral muscle mass measurements using ultrasound and the cross-sectional area (CSA) at L3 obtained by CT. Low muscularity was defined as a skeletal muscle index of 36.0 cm2/m2 for males and 29.0 cm2/m2 for females. Secondary outcomes included the correlation with the ultrasound measurements of the biceps brachii muscle mass and diaphragm thickness. Results: Among 133 patients, 89 underwent CT imaging, which included the L3. The patient mean age was 72 ± 13 years, and 60 patients (67%) were male. The correlation between the femoral muscle ultrasound and CT was p = 0.57 (p < 0.01, n = 89) and p = 0.48 (p < 0.01, n = 89) for quadriceps muscle layer thickness and rectus femoris muscle CSA, and these had the discriminative power to assess low muscularity, with the areas under the curve of 0.84 and 0.76, respectively. The ultrasound measurements of the biceps brachii muscle mass and diaphragm thickness were correlated with CT imaging [p = 0.57 - 0.60 (p < 0.01, n = 52) and p = 0.35 (p < 0.01, n = 79)]. Conclusions: Ultrasound measurements of muscle mass were correlated with CT measurements, and the measurements of femoral muscle mass were useful to assess low muscularity at ICU admission.
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- 2021
31. Muscle architecture and its relationship with lower extremity muscle strength in multiple sclerosis
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Ayşe Münife Neyal, Zekiye İpek Katirci Kirmaci, Tüzün Fırat, Nevin Ergun, Hanifi Ayhan Özkur, and Abdurrahman Neyal
- Subjects
medicine.medical_specialty ,Multiple Sclerosis ,business.industry ,Multiple sclerosis ,Skeletal muscle ,General Medicine ,Rectus femoris muscle ,musculoskeletal system ,medicine.disease ,Biceps ,Gastrocnemius muscle ,Physical medicine and rehabilitation ,medicine.anatomical_structure ,Lower Extremity ,Muscle strength ,Humans ,Medicine ,In patient ,Muscle Strength ,Neurology (clinical) ,Muscle, Skeletal ,Muscle architecture ,business ,Ultrasonography - Abstract
This study was planned to determine the muscle architecture (pennation angle, muscle fiber length, and muscle thickness) and its relationship to lower extremity muscle strength in patients with Multiple Sclerosis (pwMS). The muscle architecture (pennation angle, muscle fiber length, and muscle thickness) and lower extremity muscle strength were assessed in 33 pwMS [13 Relapsing–Remitting MS (RRMS), 5 Primary Progressive MS (PPMS), 5 Secondary Progressive MS (SPMS), and 11 matched healthy controls (HC)]. Muscle architecture features were assessed with ultrasonography and muscle strength were assessed with a digital hand-held dynamometer. The rectus femoris muscle thickness and pennation angle, gastrocnemius muscle thickness, and the tibialis anterior pennation angle were significantly lower in pwMS compared to HC (p
- Published
- 2021
32. Age-Related Differences in Hip Flexion Maximal and Rapid Strength and Rectus Femoris Muscle Size and Composition
- Author
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Ahalee C. Farrow and Ty B. Palmer
- Subjects
Adult ,Male ,medicine.medical_specialty ,Muscle size ,Biophysics ,Isometric exercise ,Rectus femoris muscle ,Quadriceps Muscle ,Young Adult ,03 medical and health sciences ,0302 clinical medicine ,Isometric Contraction ,Internal medicine ,Age related ,Humans ,Medicine ,Orthopedics and Sports Medicine ,Muscle Strength ,Range of Motion, Articular ,Aged ,030304 developmental biology ,0303 health sciences ,Hip ,business.industry ,Rehabilitation ,Ultrasound ,Age Factors ,Torque ,Cardiology ,Ultrasonography ,business ,030217 neurology & neurosurgery ,Hip flexion ,Echo intensity - Abstract
This study aimed to examine the effects of age on hip flexion maximal and rapid strength and rectus femoris (RF) muscle size and composition in men. Fifteen young (25 [3] y) and 15 older (73 [4] y) men performed isometric hip flexion contractions to examine peak torque and absolute and normalized rate of torque development (RTD) at time intervals of 0 to 100 and 100 to 200 milliseconds. Ultrasonography was used to examine RF muscle cross-sectional area and echo intensity. Peak torque, absolute RTD at 0 to 100 milliseconds, and absolute and normalized RTD at 100 to 200 milliseconds were significantly lower (P = .004–.045) in the old compared with the young men. The older men exhibited lower cross-sectional area (P = .015) and higher echo intensity (P = .007) than the young men. Moreover, there were positive relationships between cross-sectional area and absolute RTD at 0 to 100 milliseconds (r = .400) and absolute RTD at 100 to 200 milliseconds (r = .450) and negative relationships between echo intensity and absolute RTD at 100 to 200 milliseconds (r = −.457) and normalized RTD at 100 to 200 milliseconds (r = −.373). These findings indicate that hip flexion maximal and rapid strength and RF muscle size and composition decrease in old age. The relationships observed between ultrasound-derived RF parameters and measurements of RTD suggest that these age-related declines in muscle size and composition may be relevant to hip flexion rapid torque production.
- Published
- 2021
33. Patients with chronic unilateral anterior knee pain experience bilateral deficits in quadriceps function and lower quarter flexibility: a cross-sectional study
- Author
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Jihong Park and Sungwan Kim
- Subjects
Flexibility (anatomy) ,Knee Joint ,business.industry ,Pain ,Physical Therapy, Sports Therapy and Rehabilitation ,Rectus femoris muscle ,Thigh ,Quadriceps Muscle ,Cross-Sectional Studies ,medicine.anatomical_structure ,Effusion ,Anesthesia ,medicine ,Humans ,Knee ,Iliopsoas ,business ,Quadriceps muscle atrophy ,Subcutaneous tissue - Abstract
Background: Little is known about how chronic unilateral anterior knee pain (AKP) affects bilateral quadriceps function and lower quarter flexibility. Objective: To determine if patients with chronic unilateral AKP present bilateral deficits in quadriceps function and lower quarter flexibility. Methods: Twenty-two patients with chronic unilateral AKP (pain duration: 48.6 months) and 22 matched healthy controls were evaluated. Pain perception and functional outcomes were obtained. Knee joint and thigh circumferences, quadriceps subcutaneous tissue thickness and function (i.e. maximal and explosive strength, activation, and endurance), and lower quarter flexibility (i.e. hamstrings and iliopsoas/rectus femoris muscle) in both legs were compared across conditions. Results: Knee joint and thigh circumferences, and quadriceps subcutaneous tissue thickness were not different between conditions (P ≥ .39). Compared with matched healthy controls, patients with chronic unilateral AKP showed: 1) greater pain perception (0.0 versus 4.4 cm, P < .0001); 2) a lower score for functional outcomes (79.6 versus 53.9, P < .0001); 3) less bilateral quadriceps maximal (3.5 versus 2.8 Nm/kg, P < .0001) and explosive (10.8 versus 8.7 Nm/kg/s, P = .01) strength, activation (0.95 versus 0.83, P < .0001), and endurance (1.66 versus 1.52 Nm/kg, P = .02); and 4) less bilateral hamstrings (86.8 versus 72.6°, P = .002) and iliopsoas/rectus femoris (11.6 versus 7.8°, P < .05) flexibility. Conclusion: Patients with chronic unilateral AKP (without knee joint effusion or quadriceps muscle atrophy) appear to have bilateral deficits in quadriceps function and lower quarter flexibility, which should be addressed with pain reduction.
- Published
- 2021
34. Maturation-related neuromuscular changes in force production of gymnasts and untrained girls
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Rana Fayazmilani, Aynaz Pourmotahari, and Sanaz Davarian
- Subjects
medicine.medical_specialty ,Sports medicine ,Knee extensors ,business.industry ,Muscle activation ,Isometric exercise ,Rectus femoris muscle ,Body weight ,Physical medicine and rehabilitation ,Rate of force development ,Age groups ,medicine ,Orthopedics and Sports Medicine ,business ,human activities - Abstract
The main purpose of the present study was to investigate maturation-related changes in force-related factors in gymnasts and untrained girls. A total of 60 female participants were divided into two groups of gymnasts and untrained individuals. Each group had three subgroups of preadolescents, adolescents, and adults according to Tanner's scale. Informed consent forms were obtained from each participant. After familiarity and initial measurements, each subject performed three maximal voluntary isometric contractions (MVIC) of the knee extensors at five different angles to determine the optimal angle of force production. The rate of force development (RFD) was calculated using the torque data. The EMG signal of the rectus femoris muscle was recorded during the MVIC test to measure voluntary activation (RMS). Gymnasts had more absolute torque in all three age groups (P
- Published
- 2021
35. 大腿四頭筋セッティングの肢位の違いが筋活動に及ぼす影響.
- Author
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稲田竜太, 三谷保弘, and 植田篤史
- Abstract
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- 2018
36. Neuromuscular adaptations induced by adjacent joint training.
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Ema, R., Saito, I., and Akagi, R.
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KNEE physiology , *JOINT physiology , *HIP joint physiology , *RECTUS femoris muscles , *ISOMETRIC exercise , *PHYSIOLOGICAL adaptation , *RANGE of motion of joints , *MUSCLE strength , *STATISTICAL sampling , *TORQUE , *NEURODEVELOPMENTAL treatment , *DESCRIPTIVE statistics , *RESISTANCE training , *PHYSIOLOGY - Abstract
Effects of resistance training are well known to be specific to tasks that are involved during training. However, it remains unclear whether neuromuscular adaptations are induced after adjacent joint training. This study examined the effects of hip flexion training on maximal and explosive knee extension strength and neuromuscular performance of the rectus femoris (RF, hip flexor, and knee extensor) compared with the effects of knee extension training. Thirty‐seven untrained young men were randomly assigned to hip flexion training, knee extension training, or a control group. Participants in the training groups completed 4 weeks of isometric hip flexion or knee extension training. Standardized differences in the mean change between the training groups and control group were interpreted as an effect size, and the substantial effect was assumed to be ≥0.20 of the between‐participant standard deviation at baseline. Both types of training resulted in substantial increases in maximal (hip flexion training group: 6.2% ± 10.1%, effect size = 0.25; knee extension training group: 20.8% ± 9.9%, effect size = 1.11) and explosive isometric knee extension torques and muscle thickness of the RF in the proximal and distal regions. Improvements in strength were accompanied by substantial enhancements in voluntary activation, which was determined using the twitch interpolation technique and RF activation. Differences in training effects on explosive torques and neural variables between the two training groups were trivial. Our findings indicate that hip flexion training results in substantial neuromuscular adaptations during knee extensions similar to those induced by knee extension training. [ABSTRACT FROM AUTHOR]
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- 2018
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37. Proximale Ausrisse des Musculus rectus femoris
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W Linhart and C Neetz
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Gynecology ,030222 orthopedics ,medicine.medical_specialty ,business.industry ,Quadriceps muscle ,030208 emergency & critical care medicine ,Hand surgery ,Rectus femoris muscle ,Avulsion ,03 medical and health sciences ,0302 clinical medicine ,Emergency Medicine ,medicine ,Orthopedics and Sports Medicine ,Surgery ,business - Abstract
Verletzungen der Oberschenkelmuskulatur gehoren zu den haufigsten Sportverletzungen. Beispielsweise beim Fusball machen sie nahezu 30 % aller Verletzungen aus. Insbesondere der M. rectus femoris ist aufgrund seiner anatomischen Besonderheiten exponiert. Wahrend die distalen Rupturen die Quadrizepssehne betreffen und nicht nur im Sport zu den haufigeren Verletzungen gehoren, stellen die proximalen Rupturen eine Seltenheit dar. Aufgrund der meist indifferenten klinischen Zeichen werden diese oft verspatet diagnostiziert. Klassifikationen zur Einteilung von Muskelverletzungen sind in verschiedenen Versionen in der Literatur beschrieben. In Bezug auf den M. rectus femoris existiert bisher keine Einteilung, aus der ein Therapieentscheid oder ein Algorithmus abgeleitet werden kann. Problematisch ist nicht nur die unklare Einteilung der Verletzung, sondern auch die daraus resultierende Variabilitat der Therapie. Selektive Literaturrecherche zur Erstellung einer Ubersichtsarbeit. Es gibt bisher keine standardisierte Nachbehandlung nach operativem Eingriff oder ein etabliertes Schema fur die konservative Therapie. Der Vergleich der einzelnen Studien untereinander ist aufgrund geringer Fallzahl und uneinheitlicher Klassifikation erschwert. Ein valider Behandlungsalgorithmus kann auf der Basis der aktuellen Datenlage nur schwer abgeleitet werden.
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- 2021
38. Evaluation of Sarcopenia by Ultrasound of the Rectus Femoris Muscle as a Predictor of Outcomes of Surgical Intensive Care Unit Patients, A Prospective, Observational Study
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Nagat Sayed El-shmaa, Sohair Moustafa Soliman, Aya Hassan Hegazy, and Mohammad Samir Abd El-Ghafar
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medicine.medical_specialty ,business.industry ,Sarcopenia ,Ultrasound ,Physical therapy ,medicine ,Observational study ,Surgical intensive care unit ,General Medicine ,Rectus femoris muscle ,business ,medicine.disease - Abstract
Background: Muscle wasting is a frequent finding in critically ill patients and is associated with worse short- and long term outcomes. Loss of mass and function of skeletal muscles starts early - in the first 24 hours after admission to Intensive Care Unit (ICU) - and may persist for years ‘Post-ICU syndrome’. Ultrasound of rectus femoris muscle is a valid and simple technique that could be used for longitudinal assessment of treatment success and facilitates the use of postoperative interventions that help in problems related to critical illness. The aim of this study is to evaluate sarcopenia by ultrasound of rectus femoris muscle as a predictor of outcomes of surgical intensive care unit. Materials and Methods: This prospective observational study was performed on 40 patients admitted to the surgical ICU, Tanta University Hospitals, Egypt, after approval of the Institutional Ethical Committee, Tanta University. The study started from April 2019 till January 2020. An informed consent was taken from the nearest relatives of the patients. All data of the patients was confidential with secret codes and private files for each patient. All given data was used for the current medical research only. Any unexpected risks appeared during the course of the research were cleared to the participants and ethical committee at time. Results: Cross-sectional area of rectus femoris muscle decreased significantly at all-time measurements as compared to the baseline at day 0 (within 24 hours from SICU admission), 5, 10, 15, 20, 25 and 30. There were negative correlations between delta cross-sectional area of rectus femoris muscle and age, height, weight, Body Mass Index and baseline cross-sectional area of rectus femoris muscle. There was a positive correlation between delta cross-sectional area of rectus femoris muscle and duration of mechanical ventilation, ICU length of stay and mortality. Conclusion: Rectus femoris cross-sectional area measured by B-mode ultrasonography showed significant role in nutritional assessment as it decreases in critically ill patients with positive correlation with duration of mechanical ventilation and ICU stay.
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- 2021
39. A Framework for Soft Tissue and Musculo-skeletal Modelling: Clinical Uses and Future Challenges
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Fernandez, J. W., Schmid, H., Hunter, P. J., Holzapfel, Gerhard A., editor, and Ogden, Ray W., editor
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- 2006
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40. Long-term follow up of extensor tendon ruptures of the knee using electromyography and three-dimensional gait analysis
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Thomas A. Schildhauer, Alexis Brinkemper, Matthias Königshausen, Jan Geßmann, Thomas Rosteius, Sebastian Lotzien, Birger Jettkant, and Valentin Rausch
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Adult ,Male ,medicine.medical_specialty ,Squat ,Knee Injuries ,Rectus femoris muscle ,Electromyography ,Thigh ,Young Adult ,03 medical and health sciences ,0302 clinical medicine ,Physical medicine and rehabilitation ,Tendon Injuries ,Humans ,Medicine ,Orthopedics and Sports Medicine ,Patient Reported Outcome Measures ,Retrospective Studies ,Rupture ,030222 orthopedics ,medicine.diagnostic_test ,business.industry ,030229 sport sciences ,Middle Aged ,musculoskeletal system ,Gait ,Tendon ,medicine.anatomical_structure ,Case-Control Studies ,Gait analysis ,Female ,Patella ,Gait Analysis ,business ,Follow-Up Studies - Abstract
Background The aim of this study was to analyze the long-term outcomes of extensor tendon ruptures of the knee using exact measuring tools. Methods The results of patients treated for extensor tendon rupture with a minimum follow up of 10 years were reviewed. Electromyography (EMG) and three-dimensional (3D) gait analyses were performed and compared with the healthy side of each patient and with the gait patterns of 20 healthy controls. Functional outcome scores were assessed using the Lysholm score and Knee Injury and Osteoarthritis Outcome Score (KOOS). Results After a mean of 13.4 ± 3 years, 23 patients were available for follow up. The mean Lysholm score was 86.6, and the KOOS averaged 78.1. Gait analysis showed no major kinematic differences between these patients compared with healthy controls. In the squat test, the mean peak amplitude of the rectus femoris muscle was significantly smaller on the injured side than on the healthy side (140.21 ± 66.13 μV vs. 168.25 ± 91.77 μV; P = 0.01). The mean peaks of the vastus lateralis and medialis EMG signals were also lower on the injured side (P = 0.63; P = 0.08). Correspondingly, the thigh girth at 20 cm and 10 cm above the knee was significantly lower on the injured side. One patient had re-rupture after patella tendon repair. Conclusion At long-term follow up the patients reached good clinical outcomes and exhibited mainly physiological gait patterns after rupture of knee extensor tendons. However, the thigh muscles showed hypotrophy and a significantly smaller EMG signal amplitude during a high-intensity task on the formerly injured side.
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- 2021
41. Isolated contracture of the rectus femoris muscle: notification and review of the pathology regarding a case
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Ana Beatriz Jara Santana, Mauricio Mafla Gómez, and Fabio Vela Rodríguez
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030203 arthritis & rheumatology ,Pathology ,medicine.medical_specialty ,business.industry ,medicine.medical_treatment ,Tenotomy ,Rectum ,Rectus femoris muscle ,Tendon ,03 medical and health sciences ,0302 clinical medicine ,medicine.anatomical_structure ,Left rectus femoris ,medicine ,Orthopedics and Sports Medicine ,Surgery ,030212 general & internal medicine ,Myotendinous junction ,Positive test ,Contracture ,medicine.symptom ,business - Abstract
We described the case of a 12-year-old patient who presented isolated contracture of the left rectus femoris muscle with subsequent traumatic rupture of the distal myotendinous junction; for this reason she did not present contracture in extension of the knee but she presented dynamic contracture in flexion of the hip (Ely positive test), which generated great impact on walking. Surgical management with tenotomy of the anterior rectum was performed, obtaining good results. This pathology has low incidence and it has been reported little in the literature, so it is important to suspect it. We provide an updated diagnostic and therapeutic approach.
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- 2021
42. Reduced Electromyographic Fatigue Threshold After Performing a Cognitive Fatiguing Task
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Justine R Ferris, Tayler N Ward, Mary A Tomlinson, Moh H. Malek, and Marie E. Pepin
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Male ,medicine.medical_specialty ,Ergometry ,Physical Therapy, Sports Therapy and Rehabilitation ,Rectus femoris muscle ,Electromyography ,030204 cardiovascular system & hematology ,Task (project management) ,Young Adult ,03 medical and health sciences ,Cognition ,0302 clinical medicine ,Physical medicine and rehabilitation ,Heart rate ,Humans ,Medicine ,Orthopedics and Sports Medicine ,AX-Continuous Performance Test ,Muscle, Skeletal ,Muscle fatigue ,medicine.diagnostic_test ,business.industry ,030229 sport sciences ,General Medicine ,Muscle Fatigue ,Exercise Test ,Exercise intensity ,business - Abstract
Ferris, JR, Tomlinson, MA, Ward, TN, Pepin, ME, and Malek, MH. Reduced electromyographic fatigue threshold after performing a cognitive fatiguing task. J Strength Cond Res 35(1): 267-274, 2021-Cognitive fatigue tasks performed before exercise may reduce exercise capacity. The electromyographic fatigue threshold (EMGFT) is the highest exercise intensity that can be maintained without significant increase in the electromyography (EMG) amplitude vs. time relationship. To date, no studies have examined the effect of cognitive fatigue on the estimation of the EMGFT. The purpose of this study, therefore, was to determine whether cognitive fatigue before performing exercise reduces the estimated EMGFT. Eight healthy college-aged men were recruited from a university student population and visited the laboratory on multiple occasions. In a randomized order, subjects performed either the cognitive fatigue task (AX continuous performance test) for 60 minutes on one visit (experimental condition) or watched a video on trains for 60 minutes on the other visit (control condition). After each condition, subjects performed the incremental single-leg knee-extensor ergometry test while the EMG amplitude was recorded from the rectus femoris muscle and heart rate was monitored throughout. Thereafter, the EMGFT was calculated for each subject for each visit and compared using paired samples t-test. For exercise outcomes, there were no significant mean differences for maximal power output between the 2 conditions (control: 51 ± 5 vs. fatigue: 50 ± 3 W), but there was a significant decrease in EMGFT between the 2 conditions (control: 31 ± 3 vs. fatigue: 24 ± 2 W; p = 0.013). Moreover, maximal heart rate was significantly different between the 2 conditions (control: 151 ± 5 vs. fatigue: 132 ± 6; p = 0.027). These results suggest that performing the cognitive fatiguing task reduces the EMGFT with a corresponding reduction in maximal heart rate response.
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- 2021
43. Reversed vascular pattern of descending branch of the lateral circumflex femoral vessel: an unreported entity
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Saket Srivastava, Rajan Arora, Kripa Shanker Mishra, and Ravikiran Naalla
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medicine.medical_specialty ,business.industry ,Femoral vessel ,Anatomy ,Rectus femoris muscle ,Trunk ,Lateral circumflex femoral artery ,Plastic surgery ,medicine.anatomical_structure ,medicine.artery ,Medicine ,lipids (amino acids, peptides, and proteins) ,Surgery ,Circumflex ,business ,Vein ,Artery - Abstract
Song et al. reported an anterolateral thigh (ALT) flap as a septocutaneous flap in 1984. Conventionally anterolateral thigh flap is based on the perforators arising from the descending branch of the lateral circumflex femoral artery (LCFA), accompanied by two venae comitantes, one on either side. We present an infrequent anatomical presentation of descending branch of LCFA in which two arteries accompanied a single central vein. This pattern was exactly the opposite of conventional anatomy. One of the arteries (lateral) was arising from the LCFA main trunk, and the other (medial) artery was emerging from the LCFA branch to the rectus femoris muscle. The larger artery was used for arterial anastomosis, and the lone vein was used for venous anastomosis. The patient had an uneventful recovery. To the best of our knowledge, the unusual pattern described above is not reported before. Level of Evidence: Level V, risk / prognostic study
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- 2021
44. Dissociated Time Course of Indirect Markers of Muscle Damage Recovery Between Single-Joint and Multi-joint Exercises in Resistance-Trained Men
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Tiago Volpi Braz, Júlio Benvenutti Bueno de Camargo, Felipe Alves Brigatto, Moisés Diego Germano, Charles Ricardo Lopes, and Danilo Rodrigues Batista
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Male ,medicine.medical_specialty ,Repetition maximum ,Physical Therapy, Sports Therapy and Rehabilitation ,Squat ,Rectus femoris muscle ,Muscle damage ,Knee extension ,Quadriceps Muscle ,Internal medicine ,Humans ,Medicine ,Orthopedics and Sports Medicine ,Muscle Strength ,Muscle, Skeletal ,Exercise ,Multi joint ,business.industry ,Resistance Training ,Total body ,Myalgia ,General Medicine ,Time course ,Cardiology ,business ,Biomarkers - Abstract
de Camargo, JBB, Braz, TV, Batista, DR, Germano, MD, Brigatto, FA, and Lopes, CR. Dissociated time course of indirect markers of muscle damage recovery between single-joint and multi-joint exercises in resistance-trained men. J Strength Cond Res XX(X): 000-000, 2020-This study compared the time course of indirect markers of muscle damage after multi-joint and single-joint exercises. Ten resistance-trained men (years: 26.9 ± 3.0; total body mass: 83.2 ± 13.8 kg; height: 176 ± 7.0 cm; resistance training [RT] experience: 5.5 ± 2.4 years; RT frequency: 5.3 ± 0.7 sessions; relative squat 1 repetition maximum: 1.4 ± 0.3) performed, in a random order, 5 sets of 8 repetition maximum of the back squat (BS) and knee extension (KE) exercises. Rectus femoris muscle thickness (MTRF), leg circumference (LC), and muscle soreness (MS) were recorded at baseline (pre), 0, 12, 24, and 36 hours after each exercise protocol. There was a significant increase (p < 0.05) in dependent variables at every time point after both the multi-joint and single-joint exercise sessions. However, MTRF and LC were greater at 0 and 36 hours, and MS was greater at 24 and 36 hours after BS when compared with KE (all p < 0.05). This study shows that resistance-trained individuals can experience significant higher levels of indirect markers of muscle damage when performing a multi-joint lower-limb exercise compared with a single one.
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- 2020
45. Amplitude and velocity dependence of patellar pendulum triggered by T reflex in Parkinson’s rigidity
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Ferah Kizilay, Serkan Uslu, Mehmet Gürbüz, Sibel Ozkaynak, Hilmi Uysal, and Tunca Nüzket
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musculoskeletal diseases ,medicine.medical_specialty ,Parkinson's disease ,Movement ,Passive stretching ,Dermatology ,Rectus femoris muscle ,Knee Joint ,Biceps ,03 medical and health sciences ,0302 clinical medicine ,Rigidity (electromagnetism) ,Physical medicine and rehabilitation ,Reflex ,medicine ,Humans ,030212 general & internal medicine ,Physics ,Electromyography ,Pendulum ,Parkinson Disease ,General Medicine ,medicine.disease ,Psychiatry and Mental health ,sense organs ,Neurology (clinical) ,030217 neurology & neurosurgery - Abstract
Objectives The relation between increase of tonus and joint movement velocity is controversial in Parkinson's rigidity. It is accepted that the increase of tonus in rigidity is constant during joint movement, and does not change within all limits of movement. However, there is thoughtful evidence that the change in tonus in rigidity has a correlation with joint movement velocity and amplitude of movement. The pendulum movement that is formed by triggering of the patellar T reflex allows the examination of phasic stretching reflexes and physiological changes of passive stretching. Therefore, the velocity and amplitude properties of tonus in Parkinson's rigidity can be scanned together. Materials and methods Patellar T reflex-triggered patellar pendulum was recorded in 40 Parkinson's patients. The velocity and amplitude changes in the pendulum were observed according to the rigidity scale. Muscle action potentials were recorded from the rectus femoris muscle and biceps femoris muscles simultaneously via superficial recording electrodes. Knee joint angle changes were recorded with a goniometer. The kinesiological and electromyographic features were compared with those of the control subjects. Results The number of pendulums decreased significantly, the angle of joint movement decreased, the peak time decreased and the angular velocity slowed down significantly in the Parkinson's group. While the latency of the patellar T reflex did not change significantly, its amplitude decreased, and the onset time of joint movement measured by accelerometer was prolonged. Conclusions Parkinson's rigidity has a velocity-dependent component, and this correlates negatively with the rigidity scale.
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- 2020
46. Electromuscular Incapacitation Current Induced Neuromuscular Tissue Injury
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Michelle X. Ling, Colin A. McFaul, Martha Meng, and Raphael C. Lee
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medicine.medical_specialty ,Swine ,Physiology ,Biophysics ,Action Potentials ,02 engineering and technology ,Rectus femoris muscle ,Rhabdomyolysis ,030218 nuclear medicine & medical imaging ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Maximal energy ,Internal medicine ,Lactate dehydrogenase ,0202 electrical engineering, electronic engineering, information engineering ,medicine ,Animals ,Radiology, Nuclear Medicine and imaging ,Muscle, Skeletal ,Acidosis ,biology ,business.industry ,Electric Conductivity ,Skeletal muscle ,020206 networking & telecommunications ,General Medicine ,medicine.disease ,Troponin ,medicine.anatomical_structure ,Gene Expression Regulation ,chemistry ,Shock (circulatory) ,Cardiology ,biology.protein ,medicine.symptom ,business - Abstract
Electrical stun devices (ESDs) serve a basic role in law enforcement and provide an alternative to lethal options for target control by causing electromuscular incapacitation (EMI). A fundamental concern is the adverse health consequences associated with their use. The capability of EMI electric field pulses to disrupt skeletal muscle cells (i.e. rhabdomyolysis) was investigated over the operational range commonly used in commercial EMI devices. Functional and structural alteration and recovery of muscle and nerve tissue were assessed. In an anesthetized swine model, the left thigh was exposed to 2 min of electrical pulses, using a commercially available ESD or a custom-made EMI signal power amplifier. Serum creatinine phosphokinase (CPK), troponin, aspartate aminotransferase (AST), and lactate dehydrogenase (LDH) levels were monitored intermittently for 6 h post-EMI exposure. A standard external cardiac defibrillator served as a positive control. Muscle and nerve tissue histology adjacent to the EMI contacts were examined. Post-EMI shock skeletal muscle function was evaluated by analyzing the compound muscle action potentials (CMAPs) of the rectus femoris muscle. Maximal energy cardiac defibrillator pulses resulted in rhabdomyolysis and marked elevation of CPK, LDH, and AST 6 h post-shock. EMI field pulses resulted in the animals developing transient acidosis. CMAP amplitudes decreased approximately 50% after EMI and recovered to near-normal levels within 6 h. Within 6 h post-EMI exposure, blood CPK was mildly increased, LDH was normal, and no arrhythmia was observed. Minimal rhabdomyolysis was produced by the EMI pulses. These results suggest that EMI exposure is unlikely to cause extremity rhabdomyolysis in normal individuals. Bioelectromagnetics. © 2020 Bioelectromagnetics Society.
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- 2020
47. EFEITO DA ESTIMULAÇÃO ELÉTRICA TERAPÊUTICA NO LTDP EM INDIVÍDUOS SAUDÁVEIS
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Claudia Kümpel, Natália Cristina de Oliveira Vargas e Silva, Lucas Henrique Silva dos Santos, Jeferson Hernandes da Silva, Poliani de Oliveira Lima, and Fábio Marcon Alfieri
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Right quadriceps ,Muscle strengthening ,Pressure pain ,business.industry ,Anesthesia ,Pain relief ,Statistical difference ,Medicine ,Rectus femoris muscle ,Pressure algometry ,business ,Left quadriceps - Abstract
As modalidades de estimulação elétrica (EE) podem ser utilizadas para promover alívio de dor ou gerar força muscular. Entretanto, observa-se que existem poucos estudos que analisam o Limiar de Tolerância de Dor à Pressão (LTDP) em parâmetros que promovem fortalecimento muscular. Objetivamos verificar e comparar o LTDP após a EE com parâmetros indicados para o fortalecimento muscular em indivíduos saudáveis. Para isso participaram 51 mulheres randomizadas em três grupos (n=17 cada): RUSSA, AUSSIE e FES. A EE foi aplicada por 10 minutos com intensidade em nível motor no músculo quadríceps direito. O quadríceps esquerdo foi utilizado como controle. Avaliou-se o LTDP no músculo reto femoral pela algometria de pressão antes, imediatamente após, 30 minutos após e 1 hora após a eletroestimulação. Quando comparado com o controle, o grupo FES apresentou aumento estatisticamente significativo no LTDP imediatamente após a EE (p=0,009), enquanto o grupo RUSSA apresentou diferença estatística 30 minutos após a EE (p=0,007), mas com aumento significativo no lado controle. No grupo AUSSIE não houve diferença estatística entre os lados em nenhuma das situações avaliadas. Na comparação entre os momentos avaliados no lado experimental, o grupo FES apresentou um aumento significativo no LTDP imediatamente após e 30 minutos após a EE (p=0,03). As demais comparações não apresentaram diferenças significativas. Os dados deste estudo sugerem que a EE pode aumentar o LTDP por meio da corrente FES, quando utilizada com parâmetros para fortalecimento muscular.
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- 2020
48. Earlier onsets in internal oblique and gluteus maximus muscles during leg raising in Functional Movement Screen score 3 than score 1
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Takumi Wahara, Hiroshi Takasaki, Asuka Goto, and Shota Kawazoe
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Onset ,030506 rehabilitation ,business.industry ,Trunk ,Oblique case ,Physical Therapy, Sports Therapy and Rehabilitation ,030229 sport sciences ,Rectus femoris muscle ,Anatomy ,musculoskeletal system ,03 medical and health sciences ,Right rectus femoris ,0302 clinical medicine ,Abdominal muscles ,Medicine ,Original Article ,Abdominal ,Orthopedics and Sports Medicine ,Left gluteus maximus ,0305 other medical science ,business ,Functional movement ,Muscle activity ,Right internal oblique muscle - Abstract
Active straight leg raising (ASLR) is a fundamental test and used in the Functional Movement Screen (FMS). In the ASLR of the FMS, one subgroup performs the movement correctly without any compensation (ASLR-3), whereas another subgroup has limitations in ASLR but not the passive straight leg raising (ASLR-1-SMCD). We aimed to investigate whether abdominal muscle activities in ASLR are different between individuals with ASLR-1-SMCD and ASLR-3. The relative latency of the onset of the following muscles to the right rectus femoris muscle during the right ASLR and the amplitude of activity in the following muscles for 50 msec after the onset of rectus femoris muscle activity were compared: left rectus abdominal, bilateral external oblique, bilateral internal oblique, and left gluteus maximus muscles. Data of 17 participants with ASLR-3 and 34 participants with ASLR-1-SMCD, whose sex ratio was matched to the ASLR-3 group, were analyzed. Those with ASLR-1-SMCD had statistically significant delays in the relative latency of the right internal oblique muscle (46.32±70.83 msec) and left gluteus maximus muscle (100.36±75.40 msec) muscles compared with those with ASLR-3 (right internal oblique muscle=9.75±23.07 msec, left gluteus maximus muscle=57.50±36.89 msec). However, the difference in the amplitude of activity in any muscles was not significant. The ASLR-1-SMCD group had greater relative latency of the onset of right internal oblique muscle and left gluteus maximus muscle to the onset of the right rectus femoris muscle during the right ASLR compared with the ASLR-3 group.
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- 2020
49. The Influence of Age and Obesity-Altered Muscle Tissue Composition on Muscular Dimensional Changes: Impact on Strength and Function
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Nic W. Shea, Gena R. Gerstner, J. Troy Blackburn, Hayden K. Giuliani, Jacob A. Mota, and Eric D. Ryan
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Adult ,Male ,Muscle tissue ,Aging ,medicine.medical_specialty ,Rectus femoris muscle ,Isometric exercise ,Quadriceps Muscle ,Absorptiometry, Photon ,Isometric Contraction ,Internal medicine ,Image Interpretation, Computer-Assisted ,Humans ,Medicine ,Muscle Strength ,Obesity ,Aged ,Ultrasonography ,business.industry ,Signal Processing, Computer-Assisted ,Middle Aged ,medicine.disease ,Walking Speed ,Preferred walking speed ,Endocrinology ,medicine.anatomical_structure ,Torque ,Sarcopenia ,Body Composition ,Intramuscular fat ,Geriatrics and Gerontology ,business ,Body mass index - Abstract
The purpose of this study was to determine if muscular dimensional changes with increases in torque production are influenced by age- and obesity-related increases in intramuscular fat, and its relationship to percent body fat (%BF), echo intensity (EI), strength, and maximum walking speed. Sixty-six healthy men were categorized into 3 groups based on age and body mass index status (young normal weight [YNW], older normal weight [ONW], and older obese [OB]). Participants underwent %BF assessments, resting ultrasonography to determine muscle size (cross-sectional area [CSA]) and EI of the superficial quadriceps, and a 10-m maximum walking speed assessment. Maximal and submaximal (rest–100% MVC in 10% increments) isometric leg extension strength was assessed while changes in rectus femoris (RF) CSA, width, and depth were obtained with ultrasonography. Echo intensity and %BF were different among all groups (p ≤ .007), with the YNW and OB groups exhibiting the lowest and highest %BF and EI values, respectively. The RF increased in depth and decreased in width with increases in torque intensity for all groups. The ONW group demonstrated no change (−0.08%) in RF CSA across torque intensities, whereas the YNW group (−11.5%) showed the greatest decrease in CSA, and the OB group showed a more subtle decrease (−4.6%). Among older men, a greater change in RF CSA was related to poorer EI (r = −0.355) and higher %BF (r = −0.346), while a greater decrease in RF width was associated with faster walking speeds (r = −0.431). Examining muscular dimensional changes during contraction is a unique model to investigate the influence of muscle composition on functional performance.
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- 2020
50. Effect of Electrical Muscle Stimulation on Upper and Lower Limb Muscles in Critically Ill Patients : A Two-Center Randomized Controlled Trial
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Hiroshi Sakaue, Rie Tsutsumi, Tomoko Yamamoto, Emiko Nakataki, Taiga Itagaki, Nobuto Nakanishi, Jun Oto, Masaji Nishimura, and Yoshitoyo Ueno
- Subjects
Male ,Weakness ,Critical Illness ,Electrical muscle stimulation ,medicine.medical_treatment ,Electric Stimulation Therapy ,Rectus femoris muscle ,Critical Care and Intensive Care Medicine ,Biceps ,Quadriceps Muscle ,law.invention ,03 medical and health sciences ,0302 clinical medicine ,Atrophy ,Randomized controlled trial ,Critically ill patients ,law ,medicine ,Humans ,Single-Blind Method ,Amino Acids ,Muscle, Skeletal ,Aged ,Intensive care unit-acquired weakness ,business.industry ,Incidence (epidemiology) ,Extremities ,030208 emergency & critical care medicine ,medicine.disease ,Muscle atrophy ,Muscular Atrophy ,030228 respiratory system ,Anesthesia ,Proteolysis ,Female ,medicine.symptom ,business - Abstract
Electrical muscle stimulation is widely used to enhance lower limb mobilization. Although upper limb muscle atrophy is common in critically ill patients, electrical muscle stimulation application for the upper limbs has been rarely reported. The purpose of this study was to investigate whether electrical muscle stimulation prevents upper and lower limb muscle atrophy and improves physical function.Randomized controlled trial.Two-center, mixed medical/surgical ICU.Adult patients who were expected to be mechanically ventilated for greater than 48 hours and stay in the ICU for greater than 5 days.Forty-two patients were randomly assigned to the electrical muscle stimulation (n = 17) or control group (n = 19).Primary outcomes were change in muscle thickness and cross-sectional area of the biceps brachii and rectus femoris from day 1 to 5. Secondary outcomes included occurrence of ICU-acquired weakness, ICU mobility scale, length of hospitalization, and amino acid levels. The change in biceps brachii muscle thickness was -1.9% versus -11.2% in the electrical muscle stimulation and control (p = 0.007) groups, and the change in cross-sectional area was -2.7% versus -10.0% (p = 0.03). The change in rectus femoris muscle thickness was -0.9% versus -14.7% (p = 0.003) and cross-sectional area was -1.7% versus -10.4% (p = 0.04). No significant difference was found in ICU-acquired weakness (13% vs 40%; p = 0.20) and ICU mobility scale (3 vs 2; p = 0.42) between the groups. The length of hospitalization was shorter in the electrical muscle stimulation group (23 d [19-34 d] vs 40 d [26-64 d]) (p = 0.04). On day 3, the change in the branched-chain amino acid level was lower in the electrical muscle stimulation group (40.5% vs 71.5%; p = 0.04).In critically ill patients, electrical muscle stimulation prevented upper and lower limb muscle atrophy and attenuated proteolysis and decreased the length of hospitalization.
- Published
- 2020
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