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INTRODUCTION: An important but under-investigated confound of functional magnetic resonance imaging (fMRI) is body posture. Although it is well established that body position changes cerebral blood flow, the amount of cerebrospinal fluid in the brain, intracranial pressure, and even the firing rate of certain cell types, there is currently no study that directly examines its effect on fMRI measurements. Moreover, fMRI is typically done in a supine position, which often does not correspond to how these processes are performed in everyday settings. METHODS: In this study, 20 healthy adults underwent resting-state fMRI under three body positions: supine, right lateral decubitus (RLD), and left lateral decubitus (LLD). We first investigated whether there were differences in overall organization of whole-brain connectivity between conditions using graph theory. Second, we examined whether functional connectivity of two most studied default mode network (DMN) seeds to the rest of the brain was altered as a function of body position. RESULTS: Nonparametric statistical analyses revealed that global network measures differed among conditions, with the supine and LLD showing identical results which differed when compared to the RLD. There was decreased connectivity for DMN seeds in the RLD condition compared to the supine and LLD, but there were no significant differences between the latter two conditions. DISCUSSION: Potential mechanisms underlying these alterations include gravity, changes in physiology, and body anatomy. Our results suggest that, compared to supine and LLD, the RLD position leads to changes in whole-brain and DMN connectivity. Finally, depending on the research question, combining imaging modalities that allow for more naturalistic settings provides a better understanding of certain phenomena. IMPACT STATEMENT: Functional connectivity is sensitive to several confounds, including motion, heart rate, and respiration. Body posture is also an important but under-investigated confound. In this study, healthy adults were scanned in three different positions to investigate whether posture results in changes in connectivity. We found that connectivity was identical if participants were facing up or lying on their left, but it was altered when they were lying on their right. Results suggest that posture can lead to connectivity changes and, in some cases, the combined use of functional magnetic resonance imaging with other techniques might provide a better understanding of the phenomenon of interest.

BACKGROUND: In the past ten years, liver biopsies have been used as a method to accurately diagnose the stage of fibrosis. OBJECTIVE: This study aimed to evaluate whether body position and exercise affect the measurement of liver Young’s modulus of healthy volunteers by real-time shear wave elastography (RT-SWE). Methods: RT-SWE was used to measure liver Young’s modulus in the supine and left lateral positions of 70 healthy volunteers at rest and measure the liver Young’s modulus in the lying position before exercise, and at zero, five, and ten minutes of rest after exercise. RESULTS: The liver Young’s modulus in the left lateral position was significantly higher than in the supine position (P< 0.05), and the measured value in the supine position was more stable than the left lateral position. The liver Young’s modulus measured at zero minutes after exercise was significantly higher than that measured before exercise (P< 0.05). The liver Young’s modulus measured at five minutes after exercise was significantly higher than that measured at zero minutes after exercise (P 0.05). The liver Young’s modulus measured at ten minutes after exercise was significantly higher from that measured at zero minutes after exercise (P< 0.05) and was not statistically different from the measured value at five minutes after exercise (P> 0.05). CONCLUSION: Body position and exercise have a significant impact on the measurement of liver Young’s modulus. It is recommended that the examinees take a supine position during the measurement, and measurement should be conducted at least ten minutes after exercise.

Smart textiles can support people with specific needs and diseases, such as diabetes or heart disease. Currently there are efforts to combine continuous mobile monitoring with other health-related conditions. On this basis, algorithms could be developed that can be used to detect unusual or critical conditions. A study was to investigate whether a previously developed washable Multi-Modal Smart Textile (MMST), based on inexpensive materials, would provide valid and reliable results with regard to the vital parameters of pulse, temperature and mobility. The measurement of the vital parameters was carried out with the developed prototype MMST as well as with validated devices. All electronics including the rechargeable NiMH has been washed more than 30 times with different methods and it remained fully functional. The intraclass correlation coefficients (ICC) for pulse (temperature) measurement ranged between 0.036 and 0.232 (0.077 and 0.817) depending on the activity of the tested individuals (standing, sitting, lying down, moving). Cohen’s Kappa for the detection of the body position was 0.765. For the parameter of pulse, the results indicated an insufficient derivation for both validity and reliability. Due to flaws in the methodology applied, the validly and reliably for the parameter of temperature could not be determined. Valid and reliable results were obtained for the parameter mobility/change of position. If the MMST (after modification of the prototype) achieves reliable results, there are many advantages for people giving and receiving care on a budget price, even in threatening emergency situations.

Oxygen therapy is a common method of respiratory support, but its use involves the risk of carbon dioxide recycling and the development of hypercapnia in the patient.The aim of the study. Assess the carbon dioxide tension in the oxygen tent depending on the patient's body position in the experimental newborn Model.Materials and Methods. The study was performed on the phantom of the newborn. Influence of 3 patient positions at fresh mixture feed rate 2.5, 5, 7 and 10 l/min is evaluated. Monitoring of the carbon dioxide tension was carried out using Testo 480, measurements were carried out for 60 minutes.Results of the study. A clear relationship was established between the position of the newborn's body and the tension of carbon dioxide in the oxygen tent. The minimum tension of carbon dioxide is noted in the patient's position ≪on the back≪ at a fresh mixture feed rate of 7.5 l/minute and is 527 ± 64 ppm, and the maximum ‒ in the child's position ≪on the stomach≪ at the same oxygen-air mixture feed rate: 1180 ± 63 ppm.Conclusion. The position of the newborn baby's body is the main factor affecting the carbon dioxide stress in the oxygen tent.

Background: The precise calculation of arterial occlusive pressure is essential to accurately prescribe individualized pressures during blood flow restriction training. Arterial occlusion pressure in the lower limb varies significantly between different body positions while similar reports for the upper limb are lacking. Hypothesis: Body position has a significant effect in upper limb arterial occlusive pressure. Using cuffs with manual pump and a handheld Doppler ultrasound can be a reliable method to determine upper limb arterial blood flow restriction. Study Design: A randomized repeated measures design. Level of Evidence: Level 3. Methods: Forty-two healthy participants (age mean ± SD = 28.1 ± 7.7 years) completed measurements in supine, seated, and standing position by 3 blinded raters. A cuff with a manual pump and a handheld acoustic ultrasound were used. The Wilcoxon signed-rank test with Bonferroni correction was used to analyze differences between body positions. A within-subject coefficient of variation and an intraclass correlation coefficient (ICC) test were used to calculate reproducibility and reliability, respectively. Results: A significantly higher upper limb arterial occlusive pressure was found in seated compared with supine position ( P < 0.031) and in supine compared with standing position ( P < 0.031) in all raters. An ICC of 0.894 (95% CI = 0.824-0.939, P < 0.001) was found in supine, 0.973 (95% CI = 0.955-0.985, P < 0.001) in seated, and 0.984 (95% CI = 0.973-0.991, P < 0.001) in standing position. ICC for test-retest reliability was found 0.90 (95% CI = 0.814-0.946, P < 0.001), 0.873 (95% CI = 0.762-0.93, P < 0.001), and 0.858 (95% CI = 0.737-0.923, P < 0.001) in the supine, seated, and standing position, respectively. Conclusion: Upper limb arterial occlusive pressure was significantly dependent on body position. The method showed excellent interrater reliability and repeatability between different days. Clinical Relevance: Prescription of individualized pressures during blood flow restriction training requires measurement of upper limb arterial occlusive pressure in the appropriate position. The use of occlusion cuffs with a manual pump and a handheld Doppler ultrasound showed excellent reliability; however, the increased measurement error compared with the differences in arterial occlusive pressure between certain positions should be carefully considered for the clinical application of the method. Strength of Recommendations Taxonomy (SORT): B.

A hexanuclear heterometallic cluster of composition [Dy2 Co4 (L)4 (NO3 )2 (OH)4 (C2 H5 OH)2 ] ⋅ 2 C2 H5 OH (1) was synthesized by employing a Schiff base 2-(((2-hydroxy-3-methoxybenzyl) imino)methyl)-4-methoxyphenol (H2 L) as ligand and utilizing Dy(NO3 )3 ⋅ 6H2 O and Co(NO3 )2 ⋅ 6H2 O as metal ion sources. X-ray single-crystal diffraction analysis indicated that complex 1 contains a defect tetracubane core and possesses central symmetric structure, with two DyIII ions being in the central body position of the molecule and four CoII ions being arranged at the outer sites. Magnetic studies reveal that complex 1 behaves as single-molecule magnet (SMM) with energy barrier of 27.50 K. To investigate the individual contribution of DyIII and CoII ions to the SMM behavior, another two complexes of formulae [Dy2 Zn4 (L)4 (NO3 )2 (OH)4 ] ⋅ 4CH3 OH (2) and [Y2 Co4 (L)4 (NO3 )2 (OH)4 (C2 H5 OH)2 ] ⋅ 2 C2 H5 OH (3) were prepared. Complexes 1 and 3 are isomorphous. The coordination geometries of DyIII ions in 1 and 2 are different. The DyIII ions are eight-coordinated in 2 and nine-coordinated in 1. Complex 2 exhibits SMM behavior with energy barrier of 69.67 K, but complex 3 does not display SMM property. These results reveal that the SMM behaviors of 1 and 2 are mainly originated from DyIII ions. It might be the higher symmetry of DyIII ions in 2 that results in the higher energy barrier.

This study was aimed at deciding risk factors of myopia suffered by school children and at finding out important prevention in order to eliminate the risk. The research was conducted in Riz-Q optical, located at Kembangan, West Jakarta. Employing qualitative method, the research collected data from children of Riz-Q optical customers suffering from myopia. The samples were school kids (15-19 years old) who were students of grade X-XII Senior High School. Findings of this study comfirm: (1) parents genetic significantly effects children prevalence to myopia; (2) behavior in using gadget, i.e., distance to eye, duration of use, body position when using gadget and low intensity of room as well as the lack of A and B vitamins usually derivating from food and sun light, significantly boost prevalence to myopia.

The most reliable head and neck position for cervical vestibular-evoked myogenic potentials (cVEMPs) measurements yet to be determined.To assess how four body positions used during clinical recordings of cVEMPs affect cVEMP parameters.cVEMPs of 10 healthy subjects (26-50 years old) were recorded in four body positions:Mean background sternocleidomastoid muscle (SCM) electrical activity was significantly higher in positions C and D than in positions A and B. The latencies of p13 and n23 differed significantly among the four positions. Raw p13-n23 complex amplitude was significantly greater in positions C and D than in A and B. These differences were reduced when amplitudes were corrected by SCM activity. For positions A and B, one and two subjects, respectively, had an abnormal raw asymmetry ratio (AR). After correction, all subjects had normal ARs in all positions.Body positions in which the head is elevated produce a quicker and larger cVEMP response compared to positions in which the head is not elevated. The difference in ARs among positions can be ignored as long as the correction is made.

Bedridden people, especially at home, suffer from diverse pathologies beyond the main one that brings them to a specific position. Long-term cares are suitable at home to avoid congestions within hospital facilities. There are different technologies available to improve such people's conditions in their daily life. The standing posture is the key solution to enhance people's wellness amid the psychological burden due to the almost impossibility to be completely healed. The paper proposes the use of a polyfunctional and robotic bed capable of displaying many positions namely vertical, tilting, anti-trendelenburg with necessary graduation. A three-year monitoring of a patient, using a polyfunctional and robotic bed, suffering from amyotrophic lateral sclerosis (ALS), has been investigated. Different physiological parameters have been measured and, particularly, the variation of temperature has been measured in presence of body position connected to the robotic bed rotation that provokes biomechanical effort. It is demonstrated that certain body positions correspond to major and minor physical effort, hence major and minor oxygenation. An infrared camera has been used. As a positive result, the variation of posture has been delaying the increase of the pathological signs, because of better conditions.

The aim of the current article is: 1) to present a 20-segmental biomechanical model of the male human body generated within a SolidWorks® environment.; 2) to improve the 16-segmental biomechanical model of the human body described in our previous investigation, shaping the body with 20 instead of 16 segments.; 3) to determine the mass-inertial characteristics of the human body of the average Bulgarian male based on the model.; 3) to verify the proposed 3D CAD model of the human body against the analytical results from our previous investigation, as well as through comparison with data available in the provided reports.; 4) to predict a human body's mass and inertial properties in several body positions as classified by NASA. The comparison performed between our model results and data reported in the literature gives us confidence that this model could be reliably used to calculate these parameters at various postures of the body.

This study compared the presence of pain in recreational and competitive road cyclists and body position on the bicycle between cyclists with and without pain. Seventy-one cyclists completed a survey reporting existing cycling-related sites of pain and comfort. Static sagittal and frontal plane images were taken to analyse body position on the bicycle. Participants were separated into recreational and competitive road cycling groups, and further into cyclists reporting pain in the upper body, low back, buttocks/hips and knees for comparison with cyclists without pain. A logistic regression model investigated possible predictors of pain whilst cycling. Pain was present in 67% of recreational and 70% of competitive cyclists whilst comfort was reported by 81% of recreational and 75% of competitive cyclists. Trivial to moderate non-significant differences were observed for body position on the bicycle between cyclists with and without pain, and between cyclists with and without pain in the upper body, low back, buttocks/hips and knees. The predictive logistic model was not significant (p = 0.07) with a model fit predicted by McFadden R

Objectives: The main goal of this research was to determine the differences between the values of intraocular pressure (IOP) in the supine and sitting positions, and to assess the effect of age and cardiovascular parameters. Methods: Seventy-two healthy adults were enrolled and classified into age groups: 20–30 years (group A), 31–40 years (group B), and 41–71 years (group C). Corneal biometry and cardiovascular parameters, such as heart rate (HR), were measured. IOP measurements were taken in the sitting position (IOPS) and in the supine position (IOPL) using the iCare® Pro tonometer. Results: A significant difference between the IOPS and IOPL in the entire cohort was found ( p S and IOPL was obtained in group A (2.6 ± 1.6 mmHg) and group C (1.5 ± 1.3 mmHg). There were no significant differences in the IOPS between groups. The highest IOP values were obtained for group A. The correlations between HR and IOPS are statistically significant for group A and group B, and for HR and IOPL-S for group B only. Multivariate analysis showed that HR has a significant influence on the difference in IOP in the two body positions. Conclusion: A statistically significant difference between the effect of age and the values of IOPS and IOPL was shown. Cardiovascular parameters showed some relevant statistical dependencies, but with a rather marginal significance in young people. The influence of body position for the measurement of IOP for healthy subjects does not seem to matter, despite the fact that there are some dependencies that are statistically significant.

Background: Until now, lymphatic ultrasound was performed with the patients in the prone position. The aim of this study was to evaluate the change in the lymphatic diameter in different body posit...

In this project, we investigate the evidential value of the effects of poses and postures. Several moderators were tested (type of DV: self-reports, behavior, physiology; cover story; type of body position; preregistration; cultural background). Further, an interactive app is provided wherein researchers can enter additional studies of body positions.

The start in swimming is a crucial phase of a race, where improvements in performance can be made. Twenty-four elite swimmers race pace starts were recorded from five above and below water 50 Hz video cameras. Body position at toe off was calculated from the recordings and consisted of the two-dimensional mass centre position at toe off, and the arm, trunk, front leg and rear leg angles.Horizontal, vertical and resultant velocity of the mass centre at toe off, time to 5 m, 10 m and 15 m were also determined. Whilst time to 5 m (starting performance) differed by 0.17 s between genders, body position at toe off showed no significant differences. The difference in start performance was mainly due to a difference in horizontal velocity at toe off. The relationship between arm angle and start performance warrants further investigation as there was a range of techniques adopted but no clear link to performance. The trunk angle at toe off was correlated to starting performance for both males and females. This study demonstrates that the body position at toe off is no different between genders but is a critical determinant of starting performance for both males and females.

Breastfeeding is a government program that must be carried out by mothers after giving birth until the baby is 6 months or even 2 years old. However, it cannot be denied that the fact among the community shows that the breastfeeding process is actually not easy, many mothers fail in the breastfeeding process. The breastfeeding technique is a method of breastfeeding that is done by a mother to a baby, in order to meet the baby's nutritional needs. The breastfeeding technique is a way of giving breast milk to the baby by bringing the mother and baby's body position closer together correctly. Achieve successful breastfeeding requires knowledge of breastfeeding techniques.Keywords: breastfeeding technique, breastfeeding mothers.

To reduce head impact exposure (HIE) in youth football, further understanding of the context in which head impacts occur and the associated biomechanics is needed. The objective of this study was to evaluate the effect of contact characteristics on HIE during player versus player contact scenarios in youth football. Head impact data and time-synchronized video were collected from 4 youth football games over 2 seasons in which opposing teams were instrumented with the Head Impact Telemetry (HIT) System. Coded contact characteristics included the player’s role in the contact, player speed and body position, contact height, type, and direction, and head contact surface. Head accelerations were compared among the contact characteristics using mixed-effects models. Among 72 instrumented athletes, 446 contact scenarios (n = 557 impacts) with visible opposing instrumented players were identified. When at least one player had a recorded impact, players who were struck tended to have higher rotational acceleration than players in striking positions. When both players had a recorded impact, lighter players and taller players experienced higher mean head accelerations compared with heavier players and shorter players. Understanding the factors influencing HIE during contact events in football may help inform methods to reduce head injury risk.

The development of science and technology brings about many advantages for human beings, yet it also creates a risk for their health and correct growth, including problems with right posture among children. The fast pace of life, an increasing number of tasks in- and outside of school, lack of physical activity, bad dietary habits and permanent compression of vertebrae are the main factors responsible for posture problems among child and teenager groups. The ages between 7 and 10 seem to be a critical period for forming the body position and it is connected with changing children’s daily learning routine (from free and loose activity to a few-hour sitting position at school). In effect, about 60% of children suffer from postural problems. This percentage has a rising tendency as such problems increase with age. The prevention and treatment of consequent disorders is based e.g. on physical exercise during corrective gymnastic classes, where a number of new technology solutions to improve standard and quality of such classes are used, e.g. motion sensors (Microsoft Kinect). This articleconnects corrective exercises with motion-control-based computer games. This approach uses the natural interest of children for interactive games to improve their engagement in corrective exercises. This new form of health-related activity packed in a “computer driven case” is a real chance to make corrective exercises more children-friendly and thus to stimulate children’s motivation to actively participate in them.

To demonstrate the effect of body posture on the occupant dynamic response under a spacecraft high-level re-entry acceleration overload, seat-dummy system models with typical body positions, includ...

The clinical utility of cervical and ocular vestibular-evoked myogenic potential (cVEMP and oVEMP) is limited by variability of testing protocols and a dearth of normative data using contemporary methods for amplitude scaling.To investigate the effect of body position and electrode montage on VEMP responses and to establish normative values.This is a repeated measures study of 44 healthy young adult subjects (22 men and 22 women).The highest response rate (99%) for cVEMP was achieved in the supine position with the head elevated and turned. For oVEMP, the highest response rate (90%) was achieved using nasal alar electrode montage with the subject in a sitting position. Scaled peak-to-peak amplitude was higher in males than in females for both cVEMP and oVEMP.Normative data for 44 young healthy adults was successfully collected for two body positions for cVEMP and two head positions and two electrode montages for oVEMP.Our findings describe VEMP protocols that efficiently detect VEMP responses, and we provide normative VEMP response data for young healthy subjects. We describe a potential difference in response between males and females, which may be clinically important.

The analysis of researches of domestic and foreign experts allowed to define system of effective means of formation of efficiency in shooting from lying and standing positions, namely: special shooting exercises for training and improvement by biathletes of preparation of the rifle for shooting in lying and standing position, special shooting exercises for training and techniques for working with a rifle trigger. As a result of the study, it was found that the improvement of shooting results should be by increasing the stability of the weapon in the process of aiming, and reducing the time to prepare for shooting, firing, reloading weapons and exit from the firing line with significant coordination of actions when aiming, holding weapons and shooting. This requires multiple integral actions in both relatively constant and changing conditions to fire with information about the oscillations of the barrel of the weapon during aiming and when firing. To improve the performance of shooting in biathlon, an important factor is to determine the best rhythm of the athlete's shooting and heart rate parameters at the time of shooting. The shooting training program in combination with autogenic and ideomotor training significantly improves the result of shooting by increasing postural control (regulation of body position in space) and stability of biathletes.

STUDY OBJECTIVES: The objective of this study was to determine if positional therapy is a viable treatment alternative for obese children with persistent obstructive sleep apnea (OSA). METHODS: A retrospective review was performed of children who underwent an adenotonsillectomy for OSA from 2014 to 2017. Children were included if they had a body mass index ≥ 95th percentile and underwent a postoperative polysomnogram. Subjects fell into one of three categories: mixed sleep (the presence of ≥ 30 minutes of both nonsupine and supine sleep), nonsupine sleep, and supine sleep. Cure was defined as an OSA/apnea-hypopnea index of < 1 events/h. Paired t tests were used to assess the differences, and a linear model adjusting for obesity class, age at procedure, and sex was performed to assess the differences between nonsupine and supine sleep. RESULTS: There were 154 children who met the inclusion criteria. Using a paired t test, supine sleep position had a significantly higher average OSA/apnea-hypopnea index (7.9 events) compared with nonsupine (OSA/apnea-hypopnea index of 4.1); P value was < .01 for the 60 children with mixed sleep. Forty-three children had predominantly nonsupine sleep and 33 predominantly supine sleep, and a McNemar’s test comparing these children showed that those sleeping in the nonsupine position were significantly more likely to be cured than those in the supine position (P < .001). CONCLUSIONS: Sleep physicians and otolaryngologists should be cognizant of positional treatment when consulting with families and note that the postoperative polysomnography may be inaccurate if it does not include supine sleep. Positional therapy as a potential treatment option for obese children with persistent OSA after adenotonsillectomy warrants further investigation. CITATION: Tholen K, Meier M, Kloor J, Friedman, N. Persistent OSA in obese children: does body position matter? Clin J Sleep Med. 2021;17(2):227–232.

In competitive swimming, performance is associated with swimming a certain distance in the shortest possible time. Specifically, in an all-out 200-m front crawl test (T200), the intensity and duration of effort represent a challenge for coaches and swimmers to balance swimming speed with the ability to use different energy sources (aerobic and anaerobic) with lower energy cost (C). In the case of swimmers with physical impairments, physiological parameters are still little explored, and their monitoring may allow a better understanding of performance. The aim of this study was to assess the total metabolic energetic contribution (Etot) and C of swimmers with physical impairments in a T200. Eleven swimmers (7 males and 4 females; age: 32.3 ± 12.3 years) with physical impairments performed a T200 with the use of a snorkel and respiratory valve system. Measurements were performed for peak oxygen uptake (VO2peak), blood lactate concentration (La), Etot and C. The performance was 210.2 ± 48.1 s (swimming speed 0.99 ± 0.14im·s−1). The aerobic, anaerobic lactic and anaerobic alactic contributions were 70.1%, 17.1% and 12.8%, respectively. C was 1.22 ± 0.52 kJ m−1. Swimmers with physical impairment of different sport classes presented, predominately, high aerobic metabolism contribution to the Etot and different values of C, with a certain tendency of C being lower in those faster swimmers than in slower swimmers. Possible divergences in this trend seem to be explained by the different competitive levels, body position and upper limb impairment.

Obesity has been associated with poorer sensorimotor performance. However, it remains unclear whether these obesity-related impairments can be mitigated by practice. In the present study, we sought to investigate the effects of practice on performing and learning a temporal estimation task, in women with and without obesity. The experimental task consisted of synchronizing the arrival of two rectangles at a target point. Limited to the pressing of a switch, the task was intended to minimize possible muscular fatigue, self-generated perturbations to balance and the need to accelerate/decelerate body segments. Participants were allowed to choose the displacement velocity of the rectangle they controlled and were informed that they would not be offered any choice over it during a test to come. To control for the effect of different body positions on sensorimotor performance and learning, the 19 women with obesity (BMI = 40.0 + 7.33, age = 44.2 + 6.6) and 20 without obesity (BMI = 22.3 + 1.95, age = 43 + 6.9) were assigned into 4 groups, according to their BMI and body position assumed during practice (standing upright with feet together or sitting). As no significant differences concerning body position were found, the data were reanalysed disregarding this factor. Results revealed that while both groups reduced errors during the Acquisition, participants with obesity showed poorer performance (Acquisition) and sensorimotor learning (Transfer). Given the experimental task and adopted procedures, our results tend to support the hypothesis that hindered perception and/or integration of sensory information is associated with obesity.

Swimming is a way to maintain a streamlined body position, which requires core muscle strength; the core muscles must be strong to carry out their function in maintaining body position during swimming. Core muscle strength correlates with swimmers' buoyancy and performance. Thus, training such as core stability exercises is needed to increase the strength of the core muscles. Therefore, this study aims to determine the effectiveness of core stability exercises using a Swiss ball to increase core muscle strength in junior swimmers. An experimental method was employed with one group only pretest and posttest design. The research instrument utilized to measure the core muscle strength of junior swimmers was the sit-up test. 50 members of the Taksaka Swimming Club were determined as the population of the study while only 30 of them were involved as the sample of this study. Out of the 30 people, 15 of them were given treatment and the rest 15 people were grouped in the control group. They were divided using a purposive sampling technique. The results showed that core stability exercise using a Swiss ball was effective in increasing core muscle strength in junior swimmers as indicated by a t-score of 7.5 at the significance level of α = 0.05. Therefore, it can be concluded that core stability exercises using a Swiss ball can be used to increase the strength of the core muscles to enable the stability around the lumbar spine and abdominal muscles might bring about biomechanical changes that allow swimmers to swim faster in a more efficient way.

Background: Intraocular pressure (IOP) alters during bariatric surgery according to body position, anesthetic agents, and intra-abdominal pressure. This study investigates the comparison of the eff...

Driving is an everyday activity but also brings a substantial risk. Driver state monitoring is a potential method to alleviate such risk by detecting unsafe driver states. Monitoring systems can in...

This study aims to analyze the athlete's body position when the sprint race ahead of the opponent in minimizing air exposure (drag effect). The research method used was an experimental, descriptive quantitative approach. The analyzed angle variables are 45 °, 50 °, 55 ° with wind speed flow patterns at 3 points, namely front, top, and back. The results showed the force used to hold the turning angle at a 45 ° variation of 26739.593 N, a 50 ° angle variation of 28971.434 N, and at an interpretation of 55 ° of 30975.985 N. Based on the force used, it can be concluded that 45 ° angle variations are most effective in sprinting, because the position of the body at this angle narrows the air resistance on the bicycle racer so that it becomes light.

Aim: This prospective comparative study aimed to investigate the effect of various body positions on changes of respiratory parameters mostly; the TV, oxygen saturation, airway pressure, and endotracheal tube cuff pressure in mechanically ventilated critical care patients. Background: Many patients who are admitted to the critical care unit require intubation and invasive mechanical ventilation for many reasons such as major trauma, medical causes, or post-operative major surgeries. Changing a patient’s position in the critical care unit is very important for the following benefits; to break through the routine monotonic delivery of mechanical ventilation, to favor the clearance of respiratory secretions, the prevention of pressure sores and ventilator acquired pneumonia, and finally the improvement in lung volume and oxygenation. Methods: A prospective, comparative study was carried out on 210 patients of both gender, aged between 21-70 years old admitted to ICU due to many reasons. After stabilization of patient condition and connection of monitors’ cables, supine position or semi setting position was chosen and this was documented in the patient’s chart. All patients were sedated to prevent them from breathing against the machine which causes the ETT cuff pressure and mean airway pressure to rise. Fentanyl sedation drug (Loading dose: 1–2 mic/kg/hour infused gradually. Maintenance dose: 1-4 mic/kg/hour) using continuous intravenous infusion typically in combination with Midazolam sedation (0.05-0.2 mg/kg/hour). The following parameters were recorded; tidal volume, mean airway pressure, PO2 /FIO2 , and ETT cuff pressure. Results: Our results show that about (58.1%) were male and (41.9%) were female. Concerning age, their mean was between (40.6 ± 8.9) years. Regarding diagnosis (50.5%) of patients were admitted with major trauma, (31.9%) due to medical causes, and (17.6%) admitted due to major chest and abdominal surgeries. The patient’s mean heart rate was (93.6 ± 7.5) b/m and the Mean Arterial Pressure was (67.7 ± 0.6)°C. Tables the Description, SOP2, Mean airway, and ETT cuff pressure of each body position in the study with the highest SPO2 98% and cuff pressure 19.2+41 in the prone position. The position checklist is illustrated in Table and Figure. The highest TV (520 ml) and PO2 /FIO2 ratio (410) were in prone poison and the lowest was in Lower Fowler position (460 ml and 320) respectively. Regarding outcome and ICU stay which were the best in both semi setting and prone position. Conclusion: Supine position (lying flat) or lateral position do not seem beneficial for critically ill patients in terms of respiratory mechanics. The semi-sitting position (with thorax angulation=30° from the horizontal plane) is associated with improvement of PO2/FIO2 , oxygenation, and tidal volume, and the effects of prone position on respiratory mechanics are very beneficial and this reflected on patient outcome and short ICU length of stay.

Background To investigate the effects of different body positions and head elevation angles on regional cerebral oxygen saturation in premature infants using near-infrared spectroscopy (NIRS). Methods This was a prospective study of premature infants hospitalized. The position was changed each feeding cycle (2–3 h), in order: 15° prone, 15° supine, 0° prone, and 0° supine position. Regional cerebral oxygen saturation (rSO2) was measured after each position period using NIRS, over 7 days. Findings Thirty-three premature infants were included in the analysis. Among them, 22 (66.7%) were male, and 11 (33.3%) were female. When placing the premature infants in the prone position, the regional cerebral oxygen saturation (rSO2) values were higher at head elevation 15° compared with 0° (main effect P 0.05). Discussion Higher cerebral rSO2 can be achieved when placing premature infants in the prone or supine position, with a 15° head elevation angle. Application to practice Using a specific body position and head angle could improve the regional cerebral oxygen saturation of premature infants.

The shoulder is very important for a vertical body position and cosmetic appearance particularly in women. The shoulder joint has the largest motion range of all joints in the human body.

There is growing evidence that sedentary behavior is a risk factor for somatic and mental health. However, there is still a lack of objective field methods, which can assess both components of sedentary behavior: the postural (sitting/lying) and the movement intensity part. The purpose of the study was to compare the validity of different accelerometers (ActivPAL [thigh], ActiGraph [hip], move [hip], and move [thigh]). 20 adults (10 females; age 25.68 ± 4.55 years) participated in a structured protocol with a series of full- and semistandardized sessions under laboratory conditions. Direct observation via video recording was used as a criterion measure of body positions (sitting/lying vs. nonsitting/lying). By combining direct observation with metabolic equivalent tables, protocol activities were also categorized as sedentary or nonsedentary. Cohen’s kappa was calculated as an overall validity measure to compare accelerometer and video recordings. Across all conditions, for the measurement of sitting/lying body positions, the ActivPAL ([thigh], ĸ = .85) and Move 4 ([thigh], ĸ = .97) showed almost perfect agreement, whereas the Move 4 ([hip], ĸ = .78) and ActiGraph ([hip], ĸ = .67) showed substantial agreement. For the sedentary behavior part, across all conditions, the ActivPAL ([thigh], ĸ = .90), Move 4 ([thigh], ĸ = .95) and Move 4 ([hip], ĸ = .84) revealed almost perfect agreement, whereas the ActiGraph ([hip], ĸ = .69) showed substantial agreement. In particular, thigh-worn devices, namely the Move and the ActivPAL, achieved up to excellent validity in measuring sitting/lying body positions and sedentary behavior and are recommended for future studies.

Paresthesia is a condition where the sensation on the skin is abnormal, such as tingling, itching or numbness, for no apparent reason. This condition can occur only temporarily or for a long time (chronic). Bucharestesia can be temporary (temporary) or chronic. Almost everyone has experienced temporary paresthesia. This sensation occurs when nerves are accidentally compressed in certain body positions, such as sitting cross-legged for too long or sleeping with your head on your hands. Temporary paraesthesia will go away on its own when the pressure on the nerves is relieved. However, if the tingling feeling persists even though the pressure has been relieved, then there may be another disease or disorder in the body that is the cause. Chronic paresthesia is often a symptom of a neurological disease or caused by trauma to the nerve tissue. A variety of diseases can cause chronic paresthesia including vitamin deficiency, neurological disorders due to repetitive movements or other diseases. Chronic paraesthesia requires medication and management to heal. However, sometimes chronic paresthesia cannot completely heal even after undergoing treatment even though an expert system is a computer-based system that uses knowledge, facts, and reasoning techniques to solve problems that usually only one person can solve. Expert systems also help their activities as highly experienced assistants. Expert systems can also provide analysis of problems and can also recommend to users some actions to make improvements.

Problemas posturais causam por dor e limitações funcionais. Uma medida eficaz para evitar problemas posturais consiste no desenvolvimento de Programas de Educação Postural, em fase escolar. Este relato de experiência descreve as atividades teóricas e práticas realizadas com alunos do Ensino Fundamental. Participaram 75 escolares de ambos os sexos (9-12 anos) e três professoras (24-28 anos). A ação foi desenvolvida em quatro fases: i) planejamento; ii) piloto; iii) execução; iv) avaliação (entrevista com professores). As atividades incidiram em jogos, brincadeiras e canções adaptadas para posições corporais específicas: i) sentar, ii) deitar, iii) agachar e iv) pegar um objeto no alto. Com base no relato dos professores de classe, verificou-se que o Programa de Educação Postural desenvolvido foi efetivo, pois transformou os hábitos posturais dos escolares em sala de aula, além de ampliar e qualificar os conhecimentos e as atividades diárias dos professores.

Andreieva Natalia Olehivna, Zhyrnov Oleksandr Valeriiovych, Salyamin Yuriy Mykolayovych. Features of the kinematics structure of ball throwing and catching techniques in rhythmic gymnastics at the stage of preliminary basic training. Journal of Education, Health and Sport. 2020;10(7):350-357. eISSN 2391-8306. DOI http://dx.doi.org/10.12775/JEHS.2020.10.07.037 https://apcz.umk.pl/czasopisma/index.php/JEHS/article/view/JEHS.2020.10.07.037 https://zenodo.org/record/4072066 The journal has had 5 points in Ministry of Science and Higher Education parametric evaluation. § 8. 2) and § 12. 1. 2) 22.02.2019. © The Authors 2020; This article is published with open access at Licensee Open Journal Systems of Nicolaus Copernicus University in Torun, Poland Open Access. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author (s) and source are credited. This is an open access article licensed under the terms of the Creative Commons Attribution Non commercial license Share alike. (http://creativecommons.org/licenses/by-nc-sa/4.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited. The authors declare that there is no conflict of interests regarding the publication of this paper. Received: 19.06.2020. Revised: 09.07.2020. Accepted: 31.07.2020. Features of the kinematics structure of ball throwing and catching techniques in rhythmic gymnastics at the stage of preliminary basic training Natalia Olehivna Andreieva, Oleksandr Valeriiovych Zhyrnov, Yuriy Mykolayovych Salyamin National University of Ukraine on Physical Education and Sport, Kyiv, Ukraine Abstract The purpose of the research is to study the features of the kinematics structure of the technique on throwing and catching ball by athletes engaged in rhythmic gymnastics at the stage of preliminary basic training. Research methods include analysis and generalization of data received from scientific and methodical literature, video shooting, biomechanical video-computer analysis of movements, method of expert assessment, methods of mathematical statistics. The contingent under study accounts for 20 gymnasts of the second youth category aged 9-10. The peculiarities of the kinematics structure of motor actions of gymnasts when performing two basic sets of ball exercises, which are learned at the stage of preliminary basic training, were examined. Research results and their discussion. Quantitative information was obtained about the indicators of the kinematics structure of the nodal elements for sports technique, associated with basic set of ball exercises: from two or three steps – throwing the ball in the "Cossack" jump – catching into the roll on both hands and back in rhythmic steps; and from two or three steps – throwing the ball in a jump touching in the ring – catching into the roll on both hands and back in rhythmic steps. Based on the indicators of biomechanical analysis of the two basic sets of ball exercises performed, the phase structure of exercises is specified and the key elements of sports technique of throwing and catching the ball are studied. For a more detailed analysis in both studies, we selected three nodal elements: the starting pose of the body (the moment of releasing the ball), the multiplication of the body pose (body position during the jump) and the final body pose (the moment of catching the ball). Conclusion. Objective quantitative biomechanical information about indicators of kinematics structure of nodal elements for sport technique consisting of basic set of ball exercises is received: from two-three steps – throwing the ball in the "Cossack" jump – catching into the roll on both hands and back in rhythmic steps; and from two or three steps - throwing the ball in a jump touching in the ring – catching into the roll on both hands and back in rhythmic steps. The obtained characteristics of the kinematics structure of the nodal elements of throwing and catching the ball during both basic exercises, can be used as model indicators for more effective technical training of young gymnasts. Conflict of interest. The authors state that there is no conflict of interest. The prospect of further research is associated with development of the models of nodal elements motor structure, used as sport technique for exercises with objects at the stage of specialized basic training. Key words: rhythmic gymnastics; ball; preliminary basic training; technique; kinematics structure of movements; nodal elements; starting pose; multiplication of poses; throwing, catching.

Objective: To evaluate the maximum bite force (MBF) in subjects with and without Temporomandibular Dysfunction (TMD), in threedifferent positions (sitting, lying and standing). Methods: The sample consisted of 60 individuals, aged between 19 and 35 years,who were divided into two groups: with TMD (n = 30) and without TMD (n = 30). First, the RDC/TMD questionnaire was applied and,after diagnosis, all of the subjects selected were submitted to the measurement of MBF, on each side (right and left), in three differentpositions (sitting, lying and standing), by means of a digital gnatodynamometer. Results: No significant difference in mean MBF was foundbetween the two groups; however, the mean MBF for the subjects, comparing the same side and different positions, was significantlydifferent, being smaller when the individual was lying down. Conclusions: According to the results, it was concluded that the MBF isinfluenced by the change of position.

Background/Aims According to the Chicago classification version 3.0, high-resolution manometry (HRM) should be performed in the supine position. However, with the patient in the upright/sitting position, the test could more closely simulate real-life behavior and may be better tolerated. We performed a systematic review of the literature to search whether the manometric variables and the final diagnosis are affected by positional changes. Methods A literature search was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) statement. Studies published in English that compared HRM results in different body positions were included. Moreover, the change in diagnosis of esophageal motility disorders according to the shift of body position was investigated. Results Seventeen studies including 1714 patients and healthy volunteers met the inclusion criteria. Six studies showed a significant increase in lower esophageal sphincter basal pressure in the supine position. Integrated relaxation pressure was significantly higher in the supine position in 10 of 13 studies. Distal contractile index was higher in the supine position in 9 out of 10 studies. One hundred and fifty-one patients (16.4%) out of 922 with normal HRM in the supine position were diagnosed with ineffective esophageal motility (IEM) when the test was performed in the upright position (P < 0.001). Conclusions Performing HRM in the upright position affects some variables and may change the final manometric diagnosis. Further studies to determine the normal values in the sitting position are needed. (J Neurogastroenterol Motil 2020;26:335-343)

Previous research has suggested that cognitive functions such as execution, attention, memory, and perception differ when body position changes. However, the influence of body position on these cog...

STUDY OBJECTIVES: Body position during sleep has been related to breathing in adults with obstructive sleep apnea (OSA). While sleep-disordered breathing is common, little information is available on the relation between sleep position and maternal breathing in pregnancy. We examined associations between the supine position, maternal breathing, and perinatal outcomes. METHODS: Women with a singleton, uncomplicated pregnancy were recruited and underwent an ambulatory overnight sleep study between 33 to 36 weeks using the Watch-PAT device. Their medical records were also reviewed. RESULTS: A total of 148 pregnant women were recruited (mean age: 33 ± 4 years; mean body mass index: 27.6 ± 4.0 kg/m(2)). They spent approximately one-half of their sleeping time in a supine position. The group’s mean apnea-hypopnea index (AHI) was 3.6 events/h in the supine position and 2.9, 2.6, and 2.1 events/h for the prone, right, and left positions, respectively. Median AHI and oxygen desaturation index were higher and SpO(2) nadir was lower in the supine versus nonsupine position (P < .0001, P < .0001, and P = .006, respectively). Peripheral oxygen saturation nadir was associated with the percentage of time spent sleeping in the supine position (P = .02). No correlations were found between supine sleep position and perinatal outcomes. There were no differences in the distributions of body positions between women with and those without OSA. CONCLUSIONS: Women in the third trimester of pregnancy with or without OSA spent large proportions of sleeping time in a supine position. Supine position was associated with more respiratory events and more and deeper oxygen desaturation events. They were not associated with perinatal outcomes. CLINICAL TRIAL REGISTRATION: Registry: ClinicalTrials.gov; Name: Fetal Outcome of Sleep Disordered Breathing During Pregnancy; URL: https://clinicaltrials.gov/ct2/show/NCT00931099; Identifier: NCT00931099. CITATION: Dunietz GL, Sever O, DeRowe A, Tauman R. Sleep position and breathing in late pregnancy and perinatal outcomes. J Clin Sleep Med. 2020;16(6):955–959.

Title: Development of Inclusive Hanger Design to Facilitate Clothes Drying Activities Laundry activities, including drying are still recommended to be done by the elderly independently. However, the decline in the physical condition of the elderly, including a decrease in the balance of body position, cannot be avoided. In the observation at the GKJ Gondokusuman nursing home, the drying place is uses a rope on the roof or pole that is quite high from the reach of the elderly hand. When drying clothes, the elderly must stretch their arms and tiptoe because of the differences in height of the clothesline. This condition can increase the risk of accidents for the elderly who lose balance. This study aims to develop a product to dry the laundry and reduce the distance between the users with a high clothesline. This product development was using design research and product design. The research method was based in ergonomics knowledge through an inclusive design approach. The techniques used were behavioral observation, assessment of body activities, like Nordic Body Map (NBM) and Rapid Entire Body Assignment (REBA). The results of the NBM stated that the elderly experienced pain in the right side of the body, while the results of the REBA assessment showed a score of 10. This condition showed that the elderly posture while drying still had a high risk of injury. As the results of these studies, the product is designed with a function to hang laundry that make user's body position more balanced because there is no need to stretch arms and tiptoe too high. Users also easily put clothes on the hanger because there is a grip feature for both hands.

Inhumation burials are recorded in Britain and Europe during excavations in a standardized way, especially graves of early medieval date. Just a limited number of attributes are usually foregrounded and these mainly concern skeletal identification, the grave plan and, when a burial is furnished, a list of objects, particularly metalwork, as well as occasional reference to burial structures, if present. In this paper, we argue that concealed within these recorded details are attributes that often receive little attention, but which can provide evidence for community investment in the individual funerary rite. These include grave orientation, grave morphology, the body position and the empty spaces in the grave, as well as categories of material culture. We argue here that these factors enable us to define communal burial profiles and can facilitate the identification of group perceptions and actions in dealing with death. By capitalizing on these additional aspects of funerary ritual, archaeologists can move away from a general dependency on well-furnished burials as the main stepping-off point for discussion of social and cultural issues. This has particular relevance for regions where unfurnished burial rites are the norm and where furnished rites do not rely on a wealth of metalwork.

A disturbed diurnal blood pressure profile is one of the most important risk factors of cardiovascular diseases. This review analyzes the use of simultaneous diurnal ambulatory blood pressure monitoring (ABPM) and motion activity monitoring (actigraphy) to obtain additional information for correct interpretation of ABPM results in clinically significant decision-making. The article considers practical aspects of actigraphy in expert ABPM for clock-independent calculation of the parameters of nighttime and daytime blood pressure (BP); detection of BP changes during sleep; connection with respiratory disturbances during sleep, motion activity, and body position; and sleep deprivation in shift workers. Original illustrations of simultaneous ABPM and actigraphy are provided., Ein gestörtes tageszeitabhängiges Blutdruckprofil ist einer der wichtigsten Risikofaktoren für Herz-Kreislauf-Erkrankungen. In der vorliegenden Übersichtsarbeit wird die Bedeutung der gleichzeitigen Durchführung des ambulanten Blutdruckmonitorings (ABPM) und der Messung der Bewegungsaktivität (Aktigraphie) beschrieben. Durch die Aktigraphie werden zusätzliche Informationen für die korrekte Interpretation des ABPM gewonnen, die zu klinisch relevanten Entscheidungen beitragen. In diesem Artikel werden praktische Aspekte der Aktigraphie in der Anwendung durch Experten bei ABPM zur uhrzeitunabhängigen Berechnung der Parameter des Blutdrucks (BP) am Tag und in der Nacht betrachtet, zur Erkennung von BP-Veränderungen während des Schlafs, zum Zusammenhang mit Atmungsstörungen während des Schlafs, zur Bewegungsaktivität und zur Körperposition sowie zum Schlafentzug bei Schichtarbeitern. Originalabbildungen der durchgeführten ABPM und Aktigraphie illustrieren exemplarisch die Daten.

Musculoskeletal health problems are an important issue that businesses should consider. The work related erroneous postures can cause strain and discomfort of the workers. At this point, Ovako Working Posture Analysing System (OWAS) method is used to analyze erroneous working postures. With this technique, body positions are defined and scoring is made according to difficulty level. Improvement suggestions are tried to eliminate problemsIn this article, OWAS and NASA-TLX methods are used to improve the working positions of the employees who make loading and unloading in a company producing tires for the automotive sector, which is called the strange working posture and accordingly mental workloads and non-ergonomic movements are determined. Actions to reduce or eliminate these difficulties have been proposed and put into practice., Kas iskeletsağlığına ilişkin problemler işyerlerinin dikkate alması gereken önemli bir konuolarak karşımıza çıkmaktadır. İşle ilgili hatalı duruşlar işçilerinzorlanmasına ve rahatsızlıkların ortaya çıkmasına neden olur. Bu noktada kötüçalışma duruşlarını analiz edebilmek amacı ile Ovako Çalışma Duruşu AnalizSistemi (OWAS) yöntemi kullanılmaktadır. Bu teknik ile vücutpozisyonlarını tanımlanır ve zorluk derecesine göre puanlama yapılır. İyileştirmeönerileri ile problemler ortadan kaldırılmaya çalışılır. Bu makalede otomotivsektörüne lastik üreten bir işletmede yükleme ve boşaltma yapan çalışanlarınuygun garip çalışma duruşu olarak adlandırılan çalışma pozisyonlarının ve bunabağlı olarak zihinsel iş yüklerinin iyileştirilmesi için OWAS ve NASA-TLXyöntemleri kullanılmış olup ergonomik olmayan hareketler tespit edilmiştir. Buzorlanmaları azaltacak ya da yok edecek aksiyonlar önerilmiş olup uygulamayakonulmuştur.

PReCIS:: Greater intraocular pressure (IOP) values are observed when reading in the supine position in comparison with the sitting position, and thus, it should be considered by eye care specialists for the management of glaucoma patients or those at risk. PURPOSE IOP is sensitive to near work and body position, however, the influence of the body position adopted while performing near tasks remains unknown. This study aimed to assess the IOP changes induced by reading on a smartphone in sitting and supine position, and to explore whether these IOP changes differ between men and women. METHODS Twenty-four healthy young adults (12 men and 12 women) read a text on a smartphone placed at 30 cm for 25 minutes while lying down and sitting in 2 different days. A rebound tonometer, which allows assessing IOP in the supine position, was used to measure IOP before reading, during reading (5, 15, and 25 min), and after 5 minutes of recovery. Complementarily, the authors checked the level of sleepiness/alertness before reading, and the perceived levels of fatigue and discomfort after reading. RESULTS The data showed that reading induces an IOP rise [P

Elevated intraocular pressure (IOP) is a major, and currently the only, modifiable risk factor that has been shown to reduce the risk of glaucoma onset and progression. Diurnal measurements of IOP, usually during office hours, are commonly used for the assessment of IOP variation and the relative success of medical, laser, or surgical IOP-lowering interventions. Such measurements, however, fail to capture variation in IOP over the day/night cycle, which may be influenced by factors such as body position. We examine current evidence in the field of IOP measurement and control—with a focus on 24-hour (circadian) study design and measurement techniques and the 24-hour efficacy of current treatments—in patients with glaucoma and ocular hypertension. We then provide our recommendations for the design of future studies of circadian IOP with the aim of improving the assessment, management, and treatment of patients with glaucoma and ocular hypertension.

The aim of this study was to investigate the acute cardiovascular hemodynamic effects of administration of a fixed dose of 130 mg of caffeine versus placebo in a sample of healthy young adults (N = 32, sex ratio 1/1), who were successively placed in four distinct positions (orthostatic before ingestion, orthostatic, supine and Trendelenburg vertical positions, after ingestion) on a gravitational inversion table. The experimental design was a single-center, parallel-group, double-blind, randomized, placebo-controlled clinical trial. Following the descriptive and inferential statistical processing of the data, a statistical significant pattern (p [0.05) of acute postural cardiovascular hemodynamic adaptation of the subjects was revealed, under the influence of caffeine versus placebo ingestion.

Background: Increased intra-abdominal pressure (PIA) leads to venous congestion in splanchnic and adjoining circulations. The aim is to examine whether PIA in peritoneal dialysis (PD) affects the mobilization of extracellular fluid from the lower body in supine body position. Methods: Patients were studied during a regular peritoneal equilibration test (PET) in supine body position using multifrequency bioimpedance analysis to determine extracellular resistance and absolute volume overload (AVO) in wrist-to-ankle (W2A) as well as in ankle-to-ankle (A2A) configurations. Measurements were taken at baseline (T0) after draining the peritoneal cavity, at T1 shortly after filling with 2 L of standard dialysate, and at T2 before taking the 2 h PET samples. PIA was measured from the column height in the PD catheter. Extracellular resistance in the lower extremities (RL) was taken as half of the A2A resistance. Results: Eighteen patients (56 ± 15 years, 76 ± 21 kg, body mass index (BMI) 26.4 ± 7 kg/m2, 13 men) were studied. After having assumed a supine body position for the duration of 17, 77, and 155 min, AVO continuously decreased from 1.6 ± 1.3 (T0) to 1.2 ± 1.5 (T1) and 1.0 ± 1.4 L (T2). RL significantly increased from 238 ± 57 (T0) to 254 ± 62 (T1) and 264 ± 67 Ohm (T2). This increase was negatively correlated to BMI and PIA measured at any time point, but not to net ultrafiltration volume. Conclusions: Orthostatic fluid shifts from the lower limbs may take up to 2 h in supine PD patients, especially with high BMI and PIA because of venous congestion in splanchnic and adjoining circulations.

People rapidly form impressions of others based on their gender. Women tend to be liked more than men but men tend to be regarded as more powerful. However, a person’s nonverbal behavior has the potential to confirm or override these stereotypical impressions. Specifically, expansive, open body postures (e.g., based on widespread limbs) tend to convey high power compared to contracted, closed body positions. In three studies, we tested whether postural variations affected evaluations of men and women and impressions of their power. In Study 1, images of women elicited a more positive reactions than images of men in an affective misattribution procedure, but only when women enacted contracted body postures. In Studies 2 and 3, participants were slower to classify images of expansive postures as high power when enacted by women and slower to classify contracted postures as low power when enacted by men, but rated men and women similarly in explicit power-related judgments. Expansive body postures thus appeared to eliminate the usual positive reaction to women relative to men, but women still did not implicitly convey power to the same degree as men. Gender did not interfere with explicit, more controlled judgments of power. Together these studies demonstrate that gender implicitly interferes with perceptions of a person’s power, even in the presence of potentially individuating body postures.