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Context: Resistance training with blood flow restriction (BFR) has increased in clinical rehabilitation due to the substantial benefits observed in augmenting muscle mass and strength using low loads. However, there is a great variability of training pressures for clinical populations as well as methods to estimate it. The aim of this study was to estimate the percentage of maximal BFR that could result by applying different methodologies based on arbitrary or individual occlusion levels using a cuff width between 9 and 13 cm. Design: A secondary analysis was performed on the combined databases of 2 previous larger studies using BFR training. Methods: To estimate these percentages, the occlusion values needed to reach complete BFR (100% limb occlusion pressure [LOP]) were estimated by Doppler ultrasound. Seventy-five participants (age 24.32 [4.86] y; weight: 78.51 [14.74] kg; height: 1.77 [0.09] m) were enrolled in the laboratory study for measuring LOP in the thigh, arm, or calf. Results: When arbitrary values of restriction are applied, a supra-occlusive LOP between 120% and 190% LOP may result. Furthermore, the application of 130% resting brachial systolic blood pressure creates a similar occlusive stimulus as 100% LOP. Conclusions: Methods using 100 mm Hg and the resting brachial systolic blood pressure could represent the safest application prescriptions as they resulted in applied pressures between 60% and 80% LOP. One hundred thirty percent of the resting brachial systolic blood pressure could be used to indirectly estimate 100% LOP at cuff widths between 9 and 13 cm. Finally, methodologies that use standard values of 200 and, 300 mm Hg far exceed LOP and may carry additional risk during BFR exercise.

Menopause is a biological stage associated with increased cardiovascular morbidity and mortality due to changes in sex hormone levels.This systematic review aimed to investigate the benefits and harms of RT in menopausal and postmenopausal women.We searched PubMed, Embase, CENTRAL, Scopus, and Web of Science from inception to 2021, and clinical trial registries. Randomized controlled trials (RCT) in menopausal and postmenopausal women that compared women undergoing RT programs with a control group were included. The primary outcomes were C-reactive protein level and adverse events; and, the secondary outcomes were lipid profile and waist circumference. Two reviewers independently selected the studies, extracted data, and assessed the completeness of RT programs, risk of bias, and quality of evidence using the Grading of Recommendations, Assessment, Development, and Evaluation approach (GRADE). A random-effects model was used. Statistical significance was set at P0.05.Twelve RCTs published from 2012 to 2020 met the inclusion criteria (n = 482). Four follow-up periods were assessed. RT caused reductions in C-reactive protein levels compared to those in the control group in postmenopausal women in the short- to long-term follow-up (mean difference, -0.47 mg/dL; 95% confidence interval, -0.66 to -0.29; P0.00001). Furthermore, RT may reduce C-reactive protein levels even at moderate and moderate-to-high intensity ( P0.0001 and P = 0.0005, respectively). Similar findings were found for lipid profiles in the short- to long-term follow-up ( P0.05). RT may have had little to no effect on waist circumference. The certainty of the body of evidence was assessed as very low and downgraded owing to serious study limitations, inconsistency, imprecision, and publication bias.There was very low-quality evidence supporting the benefits of RT compared with control for C-reactive protein levels and lipid profile. No benefits were found for the outcome of waist circumference in postmenopausal women with different comorbidities or risk factors. Safety data were scarce. We have little confidence in the results, and the true effect is likely to be substantially different. Further well-conducted and well-reported RCTs are warranted to strengthen the evidence.PROSPERO CRD42020213125.

Context: Hypopressive exercise (HE) has been used as an alternative lumbo-pelvic injury prevention program and claimed to be a means of respiratory and flexibility improvement. However, the possible effects of HE on athletic populations and physical performance remain unclear. Objective: Examine the effects of a HE program on posterior back chain kinematics, thoracic mobility, pulmonary function, and lower lumbar pain in female basketball players over an 8-week training period. Design: Prospective (1) baseline, (2) midpoint (4 wk), and (3) after 8 weeks. Setting: Sports field. Participants: A total of 17 professional female basketball players (mean age 20.7 y, SD: 3.50; body mass index, 21.71, SD: 1.69). Intervention: Participants performed 8 HE weekly sessions of 30 minutes. Main Outcome Measures: Back chain kinematics was assessed with the sit and reach and finger to floor test, and back pain was assessed through numerical rating scale. Respiratory parameters were assessed by spirometry and through thoracic mobility. Results: The analysis of variance revealed significant differences between the 3 measurement periods for thoracic mobility (P > .01); forced expiratory volume in the first second (P P > .01), peak expiratory flow (P = .01), and forced expiratory volume in the first 25 seconds (P = .04). Also, significant differences between weeks were found in levels of lumbar pain (P = .003) and the finger to floor test (P = .002). Conclusions: These preliminary findings suggest that a HE program can improve posterior back chain and chest wall kinematics as well as lower lumbar pain levels. However, no gains seem to be observed for the majority of pulmonary variables except for peak expiratory flow and forced expiratory volume in the first seconds.

Purpose: This research aimed to compare the effect of two intervention programs using stable or unstable surfaces on speed and hitting distance in golf stroke/swing. Methods: Twenty-five elite golfers (19.20 ± 1.77 years, height = 181.12 ± 4 cm, body mass = 75.35 ± 5.83; kg, BMI = 22.71 ± 1.76 kg.m2, handicap: 2.49 ± 2.56) were randomly assigned to two different 8-week training programs based on unstable surface (n = 12) or stable surface training (n=13). Measurements of carry distance and club head speed were performed using the Trackman Golf® system, with each participant executing five swings and obtaining the average and best distance. Results: No significant changes (p< 0.05) in the club head speed or carry distance were found after the intervention in the stable surface or the unstable surface training group. Conclusions: The proposed intervention using instability surfaces does not provide any additional benefit to training on stable surfaces in the specific performance of the stroke in elite golfers. Resumen. Objetivo: Esta investigación tuvo como objetivo comparar el efecto de dos programas de intervención que utilizan superficies estables o inestables sobre la velocidad y la distancia de golpeo en el golpeo/swing de golf. Métodos: Veinticinco golfistas de élite (19,20 ± 1,77 años, altura = 181,12 ± 4 cm, peso corporal = 75,35 ± 5,83; kg, IMC = 22,71 ± 1,76 kg.m2, hándicap: 2,49 ± 2,56) fueron asignados aleatoriamente a dos programas de entrenamiento diferentes de 8 semanas de duración basados en superficies inestables (n = 12) o en superficies estables (n = 13). Las mediciones de la distancia de golpeo y la velocidad de la cabeza del palo se realizaron con el sistema Trackman Golf®, ejecutando cada participante cinco swings y obteniendo la media y la mejor distancia. Resultados: No se encontraron cambios significativos (p< 0,05) en la velocidad de la cabeza del palo ni en la distancia de golpeo después de la intervención en el grupo de entrenamiento en superficie estable o en el de superficie inestable. Conclusiones: La intervención propuesta utilizando superficies de inestabilidad no aporta ningún beneficio adicional al entrenamiento en superficies estables en el rendimiento específico del golpe en golfistas de élite.

Ischemic preconditioning (IPC) has shown positive effects in endurance-type sports among healthy young individuals; however, its effects in endurance-type exercises in older adults have not been explored. We aimed to examine the acute effects of a single session of IPC prior to an endurance-type exercise on cardiovascular- and physical-function-related parameters in sedentary older adults. A pilot study with a time-series design was carried out. Nine participants were enrolled consecutively in the following intervention groups: (i) SHAM (sham IPC + walking) and (ii) IPC (IPC + walking) groups. The main outcomes were resting systolic (SBP) and diastolic (DBP) blood pressure, heart rate (HR), peripheral oxygen saturation (SpO2), maximum isometric voluntary contraction (MIVC), endurance performance, and perceived fatigue. After the intervention, the IPC group showed a significant reduction in SBP, whereas SpO2 decreased in the SHAM group. The IPC group maintained quadriceps MIVC levels, whereas these levels dropped in the SHAM group. No changes in DBP, resting HR, endurance, or fatigue in any group were observed. These findings are of interest for the promotion of cardiovascular and physical health in older people.

Isoinertial training is a new form of physical exercise that combines concentric-eccentric exercises while regulating the load. Objectives The aim of the study was to analyze acute changes in the cross-sectional area (CSA) of the supraspinatus tendon after isoinertial 10 sets of yellow inertial disc exercises using 0.052Kgm2 of inertia and a maximum resistance of 18 kg with Handy Gym™ device. Participants Seventy-two healthy athletic subjects (40 men and 32 women) were analyzed. Results The results showed there was a time effect for tendon thickness and volume (p

This study aimed to evaluate the effects of preceding anodal transcranial direct stimulation (a-tDCS) over the dorsolateral prefrontal cortex (DLPFC) during the back squat exercise on movement velocity and surface electromyographic (sEMG) activity. Thirteen healthy, well-trained, male firefighters (34.72 ± 3.33 years; 178 ± 7.61 cm; 76.85 ± 11.21 kg; 26.8 ± 4.2 kg·m−2; back squat 1-repetition maximum 141.5 ± 16.3 kg) completed this randomised double-blinded sham-controlled crossover study. After familiarisation and basal measurements, participants attended the laboratory on two occasions separated by 72 h to receive either Sham or a-tDCS (current intensity of 2 mA for 20 min). Immediately after stimulation, participants completed three sets of 12 repetitions (70% of 1-RM) with three minutes of recovery between sets monitored with a linear position transducer. The sEMG of the rectus femoris (RF) and vastus lateralis (VL) of both legs were recorded. No significant differences were observed between a-tDCS and Sham interventions on mean concentric velocity at any set (p > 0.05). Velocity loss and effort index were significantly higher (p < 0.05) in set 3 compared to set 1 only in the a-tDCS group. The right-leg RM and right-leg VL elicited the greatest muscle activation during set 1 after a-tDCS and Sham, respectively (p < 0.05). Our results revealed that a-tDCS over the DLPFC might impact movement velocity or fatigue tolerance in well-trained individuals. Notwithstanding, significant differences in dominant-leg muscle activity were found both in a-tDCS and Sham.

The prevalence of hypertension is higher in postmenopausal than in premenopausal women. Regular exercise training has been shown to be effective in addressing hypertension. The aim of this systematic review was to synthesize the effect of exercise training on systolic blood pressure (SBP), diastolic blood pressure (DBP) and mean arterial pressure (MAP) in menopausal and postmenopausal women. This review was reported according to the PRISMA statement and registered in PROSPERO. The literature search was done in MEDLINE, Embase, Cochrane CENTRAL and ClinicalTrials. Randomized controlled trials involving menopausal and postmenopausal women undergoing exercise training were included. Two blinded reviewers assessed risk of bias in the included studies by using the Cochrane Risk of Bias tool. A random-effects model was used for all analyses. Significance was set at P 0.05. Compared with the control group, exercise training resulted in clinically significant reductions on SBP (MD -3.43 mmHg; 95% CI, -5.16, -1.71; P 0.0001), DBP (MD, -2.25 mmHg; 95% CI, -3.40, -1.11; P = 0.0001) and MAP (MD, -3.48 mmHg; 95% CI, -5.84, -1.11; P = 0.004). Aerobic training (AT) did not produce a significant reduction in SBP, DBP and MAP (P0.05). Combined training (CT) generated larger reductions. Exercise training generated small but clinically relevant reductions in SBP, DBP and MAP in menopausal and postmenopausal women, younger or older than 65 years, with prehypertension or hypertension. AT did not lead to a clinically relevant improvement in blood pressure (BP) in this population. In addition, CT showed the largest reductions in SBP, DBP and MAP.

Resumen Introducción: La lesión del ligamento cruzado anterior sin contacto tiene una mayor incidencia en las mujeres deportistas en edad adolescente. Las características propias del baloncesto (el salto, el aterrizaje o los cambios de dirección que se producen cada 2.0 a 2.82 segundos) junto con las características biomecánicas y hormonales propias de la mujer (mayor valgo de rodillas, laxitud articular y ciclo menstrual) hace que nos encontremos ante un sector poblacional de especial interés para implementar programas de prevención neuromuscular. El objetivo de este estudio ha sido realizar una revisión bibliográfica para proponer un programa de prevención neuromuscular para las lesiones de ligamento cruzado anterior en mujeres jugadoras de baloncesto. Material y método: La búsqueda se realizó en las bases de datos PubMed, SportDiscus y PEDro entre diciembre 2019-enero 2020. Los descriptores “anterior cruciate ligament”, “neuromuscular training”, “injury rates”, “basketball” y “women” se utilizaron como criterio de búsqueda. Resultados: Se analizaron 20 artículos que fueron seleccionados acorde a los criterios de inclusión: estudios que aporten información sobre factores de riesgo y programas de prevención de la lesión de ligamento cruzado anterior en mujeres sanas, atletas/deportistas. Se clasificó la información obtenida según estrategia o información preventiva aportada. Conclusiones: Un programa de prevención neuromuscular para lesiones de ligamento cruzado anterior sin contacto en mujeres jugadoras de baloncesto debe basarse en cuatro aspectos fundamentales: entrenamiento de fuerza de miembro inferior, pliometría, retroalimentación en el aterrizaje y trabajo central de tronco. Abstract Introduction: Non-contact anterior cruciate ligament injuries have a higher incidence in adolescent female athletes. The characteristics of basketball (jumping and landing), together with women's biomechanical and hormonal characteristics (greater valgus at the knees, joint laxity, and menstrual cycle), make us find ourselves before a population sector of special interest to implement neuromuscular prevention programs. The objective of this study has been a literature review to propose neuromuscular prevention programs for non-contact anterior cruciate ligament injuries in female basketball players. Material and method: The search was conducted in the PubMed, SportDiscus, and PEDro databases between December 2019 and January 2020. The keywords "anterior cruciate ligament," "neuromuscular training," "injury rates," "basketball," and "women" were used as search criteria. Results: 20 articles selected according to the inclusion criteria were analyzed; these studies provided information on risk factors and prevention programs for common anterior ligament injuries in healthy women and athletes. The information obtained was classified according to the preventive strategy provided. Conclusions: A neuromuscular prevention program for non-contact anterior cruciate ligament injuries in female basketball players should be based on four main aspects: lower limb strength training, plyometrics, feedback on the landing, and central trunk work. Resumo Introdução: A lesão do ligamento cruzado anterior sem contato tem maior incidência em atletas adolescentes do sexo feminino. As características do basquete (salto, aterrissagem ou mudanças de direção que ocorrem a cada 2,0 a 2,82 segundos) juntamente com as características biomecânicas e hormonais da mulher (maior valgo do joelho, frouxidão articular e ciclo menstrual) fazem com que estejamos diante de um setor populacional de especial interesse para implementar programas de prevenção neuromuscular. O objetivo deste estudo foi realizar uma revisão bibliográfica com o objetivo de propor um programa de prevenção neuromuscular de lesões do ligamento cruzado anterior em jogadoras de basquete do sexo feminino. Material e métodos: A busca foi realizada nas bases de dados PubMed, SportDiscus e PEDro entre dezembro de 2019 e janeiro de 2020. Os descritores "ligamento cruzado anterior", "treinamento neuromuscular", "taxas de lesões", "basquetebol" e "mulheres” foram usados como critérios de pesquisa. Resultados: Foram analisados 20 artigos selecionados de acordo com os critérios de inclusão: estudos que fornecem informações sobre fatores de risco e programas de prevenção da lesão do ligamento cruzado anterior em mulheres saudáveis, atletas / esportistas. As informações obtidas foram classificadas de acordo com a estratégia ou informações preventivas fornecidas. Conclusão: Um programa de prevenção neuromuscular para lesões do LCA sem contato em jogadoras de basquete deve ser baseado em quatro aspectos fundamentais: treinamento de força de membros inferiores, pliometria, retroalimentação na aterrissagem e trabalho central.

The Achilles tendon is one of the strongest and thickest tendons of the human body. Several studies have reported an immediate decrease in Achilles tendon thickness after a single bout of resistance training. However, the effects of blood flow restriction training on Achilles tendon thickness have not been investigated. The purpose of this study was to investigate the acute effects of different regimens of resistance training on Achilles tendon thickness. Fiftytwo participants (27.3 ± 7 years; 177.6 ± 11 cm; 72.2 ± 13.7 kg) were randomly allocated into one of the three groups: low-intensity exercise without (LI, n = 13) and with blood flow restriction (LI-BFR, n = 24), and high-intensity exercise (HI, n = 15). Participants from LI and LI-BFR groups performed four sets (1 x 30 + 3 x 15 reps) at 30% 1RM, while the HI group performed four sets (1 x 30 with 30% 1RM + 3 x 10 reps with 75% 1RM). All groups performed a plantar flexion exercise. For the LI-BFR group, a blood pressure cuff was placed on the dominant calf and inflated at 30% of the individual´s occlusion pressure (47.6 ± 19.8 mmHg). Sonographic images of Achilles tendon thickness were taken at pre, immediately after, 60 min and 24 h following acute bouts of exercise. Achilles tendon thickness was significantly reduced immediately after, 60 min and 24 h post-LI-BFR exercise (pre: 4.4 ± 0.4 mm vs. IA: 3.8 ± 0.4 mm vs. 60 min: 3.7 ± 0.3 mm vs. 24 h: 4.1 ± 0.3 mm; p < 0.001), whereas Achilles tendon thickness was unchanged for HI and LI groups (p > 0.05). These results suggest that blood flow restriction training may be an effective strategy to stimulate a positive response in Achilles tendon thickness.

We imagine that you want to be healthy; nobody likes to be ill because that often prevents us from doing the things we like to do. However, we often do not do everything in our power to keep ourselves healthy because modern life is designed to be comfortable. Consequently, we are moving and exercising less than ever, and even young people are suffering the effects of physical inactivity. In this article, we will explain why it is essential for you to move your body, to do so correctly, and to be physically active throughout your life. We will also dispel some myths about children and adolescents lifting weights. There are many things you can do in your daily life to be more physically active!

Introduction: Fibromyalgia (FM) is a rheumatic disease associated with fatigue and chronic pain with a high prevalence in women, FM impair the quality of life. It has been recommended physical exercise as a non-pharmacological therapy. Therefore, the objective was to assess and analyze the effects of a resistance training program with elastic bands in women diagnosed with FM Method: 6 women diagnosed with FM, with a mean age of 56 (5.73) years, completed an elastic bands resistance training program with a duration of 5 weeks at a rate of 2 days per week. Before and after the intervention, were evaluated: i) Quality of life (SF-36); ii) The impact of the disease (FIQ); iii) The physical condition (Senior Fitness Test); iv) Sleep quality (PSQI). Results: It was registered, significant improvements were obtained on the impact of the disease (18.5%), quality of life (30%) and strength in upper (23%) and lower (28%) body. Conclusion: A circuit of resistance training program with elastic bands and bodyweight exercise obtained improvements in lower and upper body muscle strength and quality of life without worsening the symptoms of the disease.

The objective of this research was to compare the effect of Post-Activation Performance Enhancement (PAPE) exerted on the back squat (BS) versus the barbell hip thrust (HT) on the sprint performance (5- and 10-m). 17 male amateur rugby players participated in the study (age 22.14 ± 2.52 years; body mass 81.06 ± 9.6 kg; height 1.78 ± 0.05 m). All participants performed a dynamic maximum strength test (3RM) in BS and HT at maximum speed. Two randomized sessions were performed inducing PAPE using BS or HT trough three series with three repetitions at 85% 1RM eight minutes before the sprint tests. An ANOVA of repeated measurement, found no differences in the time for 5-m (F = 0.398, P = 0.537, η2p = 0.024) or 10-m (F = 2.589, P = 0.127, η2p = 0.139). There were no significant differences in the Protocol effect between HT and BS in 5-m or 10-m (F = 2.963, P = 0.104, η2p = 0.156 and F = 1.472, P = 0.243 η2p = 0.084, respectively). There were also no differences in the Time x Protocol interaction at 5-m (F = 0.001, P = 0.976, η2p

Context: Cardiovascular diseases cause 17 million deaths annually worldwide, of which hypertension is responsible for 9.4 million and a 7% burden of disease. High blood pressure is responsible for 45% of deaths from heart disease and 51% of deaths from stroke. Objective: The aim of this systematic review and meta-analysis was to quantify the effect of isometric resistance training on systolic, diastolic, and mean arterial blood pressure (SBP, DBP, and MAP, respectively) values in normotensive adult participants. Data Sources: This study was registered with the PROSPERO database. Eligible studies were identified after performing a systematic search within the following databases: PubMed, Scielo, BioMed Central, Clinical Trials, EMBASE, Cochrane Central Register of Controlled Trials, and EBSCO. Study Selection: Randomized controlled trials that categorized participants as normotensive according to the guidelines of the American Heart Association and the American College of Cardiology were included. Study Design: Systematic review with meta-analysis. Level of Evidence: Level 1. Data Extraction: Data related to participant characteristics, exercise programs, level of evidence, risk of bias, Consensus on Exercise Reporting Template, and outcomes of interest were systematically reviewed independently by 2 authors. Results: A total of 6 randomized controlled trials were included. The following reductions in blood pressure (compared with the control group) were generated by isometric resistance training: SBP (mean difference [MD], −2.83 mm Hg; 95% CI, −3.95 to −1.72; P < 0.00001), DBP (MD, −2.73; 95% CI, −4.23 to −1.24; P = 0.0003), and MAP (MD, −3.07; 95% CI, −5.24 to −0.90; P = 0.005). Conclusion: It appears that isometric resistance training reduces SBP, DBP, and MAP in normotensive young adults in a statistically significant and clinically relevant manner. This type of exercise could be considered effective in preventing arterial hypertension.

Background Ageing affects metabolic flexibility, although physical status could influence this relationship. This cross-sectional study aims to describe and analyse the metabolic flexibility/inflexibility in a group of active older women, together with the impact of ageing and physical status on their oxidation rates and maximal fat oxidation (MFO). Methods Fifteen volunteers (69.00 ± 6.97 years)—from 24 women—completed an incremental cycling test until the second ventilatory threshold. Intensity increased 10 W each 3 min 15 s, starting at 30 W. Gas exchange, heart rate, rate of perceived effort, pain scale and muscle power were registered, together with lactate. VO2 and VCO2 were considered for fat and carbohydrate oxidation (FATox and CHOox; Frayn’s equation) at intensities 60%, 80% and 100% from the peak power in the test (P100). Psychophysiological parameters were compared at MFO/FATmax and P100, together with the energy expenditure calculations around MFO (included FAT and CHO contributions), and the main correlation analyses, with and without P100 and VO2 as covariates. Results FATox was low at MFO (0.13; 95% CI [0.09–0.17] mg/min/kgFFM; 3.50; 95% CI [2.49–4.50] mg/min/kgFFM), with short oxidation-rate curves shifting down and leftward. CHOox and FATox were both low for reduced power with age (77.14 ± 18.58 W and 39.29 ± 9.17 W at P100 and MFO, respectively), all accompanied by a fall in energy expenditure (5.44 ± 2.58 kcal/min and 3.32 ± 1.55 kcal/min at P100 and MFO, respectively). Power appears as a determinant factor, given its strong and negative significant association with age (r = − 0.85, p R2 = 0.72) and moderate with MFO (r = − 0.54, p = 0.04; R2 = 0.29). In turn, energy expenditure shows a positive and moderate association with muscle power (r = 52, p = 0.04). Conclusions Despite the drop in substrates oxidation with age, physical status (i.e. larger muscular power and energy expenditure) suggests a key role in the preservation of metabolic health with ageing in active women.

After the period of forced quarantine due to the COVID-19 epidemic, the physiological principle of detraining became more evident than ever [...]

Low-intensity training with blood flow restriction (LI-BFR) has been suggested as an alternative to high-intensity resistance training for the improvement of strength and muscle mass, becoming advisable for individuals who cannot assume such a load. The systematic review aimed to determine the effectiveness of the LI-BFR compared to dynamic high-intensity resistance training on strength and muscle mass in non-active older adults. A systematic review was conducted according to the Cochrane Handbook and reportedly followed the PRISMA statement. MEDLINE, EMBASE, Web of Science Core Collection, and Scopus databases were searched between September and October 2020. Two reviewers independently selected the studies, extracted data, assessed the risk of bias and the quality of evidence using the GRADE approach. Twelve studies were included in the qualitative synthesis. Meta-analysis pointed out significant differences in maximal voluntary contraction (MVC): SMD 0.61, 95% CI [0.10, 1.11], p = 0.02, I2 71% p < 0.0001; but not in the repetition maximum (RM): SMD 0.07, 95% CI [−0.25, 0.40], p = 0.66, I2 0% p < 0.53; neither in the muscle mass: SMD 0.62, 95% CI [−0.09, 1.34], p = 0.09, I2 59% p = 0.05. Despite important limitations such as scarce literature regarding LI-BFR in older adults, the small sample size in most studies, the still differences in methodology and poor quality in many of them, this systematic review and meta-analysis revealed a positive benefit in non-active older adults. LI- BFR may induce increased muscular strength and muscle mass, at least at a similar extent to that in the traditional high-intensity resistance training.

Background This overview aims to identify, appraise, and summarize the findings of all relevant systematic reviews about the benefits and harms of different exercise training modalities on blood pressure in normotensive, pre-hypertensive, and high blood pressure adults. Methods This overview of systematic reviews protocol was reported following the PRISMA-P Statement. We will search MEDLINE, EMBASE, and Epistemonikos to identify systematic reviews of randomized controlled trials (RCTs) in adults with or without a diagnosis of high blood pressure that compared exercise training interventions with other or no exercise interventions. Major outcomes will be blood pressure and adverse events. Pairs of reviewers will independently screen the systematic reviews for inclusion, extract data, and appraise the methodological quality. The GRADE approach will be used to evaluate the quality of the evidence. Discussion Findings from this study will contribute to the knowledge base in the area by providing a systematic synthesis of the certainty of the evidence for the effects of the different training modalities on blood pressure. These assessments might also assist in both the development of clinical practice guidelines and to strengthen evidence-informed decision making in healthcare. Finally, this study might serve to inform patients, caregivers, healthcare providers, researchers, and decision-makers about the benefits and adverse events related to different exercise training modalities, as well as the knowledge gaps in the body of evidence. Protocol registration: PROSPERO CRD42021247062

Alonso-Aubin, DA, Picon-Martinez, M, Rebullido, TR, Faigenbaum, AD, Cortell-Tormo, JM, and Chulvi-Medrano, I. Integrative neuromuscular training enhances physical fitness in 6- to 14-year-old rugby players. J Strength Cond Res 35(8): 2263-2271, 2021-The purpose of this study was to assess the effects of an 8-week integrative neuromuscular training (INT) program on physical fitness measures in young rugby players. A sample of 138 male rugby players (age range, 6-14 years) was divided into 5 age-related groups: group 1 (G1) (n = 20; age, 7.05 ± 0.58), group 2 (G2) (n = 27; age, 8.57 ± 0.49), group 3 (G3) (n = 31; age, 11.02 ± 0.56), group 4 (G4) (n = 33; age, 13.12 ± 0.58, and group 5 (G5) (n = 27; age, 14.85 ± 1.53 and additionally into 2 game position groups: forwards (FOR) (n = 69) and backs (BAC) (n = 69). Physical fitness measures included the Functional Movement Screen (FMS), dominant and nondominant hand-to-eye coordination, sprint capacity, core muscular endurance, and lower- and upper-body power. Integrative neuromuscular training (INT) included progressive strength, coordination, and speed exercises performed twice per week for 20 minutes. Following INT, significant improvements in selected age-related groups (p < 0.01) were found in total FMS score G3 (effect size [ES] = 0.47), G4 (ES = 0.88), and G5 (ES = 0.58); dominant hand-to-eye coordination G1 (ES = 1.48), G2 (ES = 0.71), G3 (ES = 0.55), G4 (ES = 1.47), and G5 (ES = 1.15), nondominant hand-to-eye coordination G2 (ES = 0.74), G4 (ES = 1.34), and G5 (ES = 1.09); lower-body power G2 (ES = 0.44), G4 (ES = 0.39), and G5 (ES = 0.43); core muscular endurance G1 (ES = 0.82), G3 (ES = 0.68), and G4 (ES = 1.04); upper-body power G2 (ES = 0.53); and sprint capacity G4 (ES = 0.69). Significant improvements were also found between player's positions for all tests. These findings indicate that a progressive INT program can enhance functional movement abilities and selected physical fitness measures in young rugby players regardless of game position and age.

Rheumatoid arthritis (RA) is a chronic-degenerative disease characterized by symptoms that significantly impact on the functional capacity and thus, the ability to carry out daily functional activities reducing the quality of life (QoL). The aim was to evaluate the effects of a strength and conditioning (S&C) program on the quality of life (QoL), the self-perception disease impact, the self-fatigue perception and cardiovascular risk factors in a patient with rheumatoid arthritis (RA) and cardiovascular disease (CVD). 34-year-old woman (height: 1.40m; weight: 36.1kg) diagnosed with RA and CVD underwent a six-month S&C program with aerobic training 2-3 times a week in 1-3 sets of 5-15 minutes at a moderate to vigorous intensity on a treadmill and/or outdoors and resistance training performed 2-3 times a week in different days from aerobic training, in 1-3 sets of 10-15 repetitions at 5-8 RPE intensity following Borg Scale. Positive improvement in the total QoL score (52,71 points vs 62,50 points), self-perception disease impact (1,73 points vs 3,72 points), self-fatigue perception with 24,4% for waking up (45 to 56 points) and 51,8% after training session (28 to 54 points) and CVD risk factors; cholesterol (pre:324; inter:215; post:228mg/dl), triglycerides (pre:98; inter:77; post:70 mg/dl), LDL (pre:239; inter:132; post:141 mg/dl), HDL (pre:64.7; inter:67.9; post:72.2 mg/dl) and glucose (pre:99; inter:72; post:72 mg/dl). A S&C program could be a useful tool for the QoL improvement in RA patients.

Temporal trends of youth muscular fitness (i.e., muscular strength, muscular power and local muscular endurance) indicate that contemporary children and adolescents are weaker and slower than previous generations. Consequently, this generation of millennials appear to be just as vulnerable as older adults to the inevitable consequences of muscle disuse and neuromuscular dysfunction. The modern-day construct of pediatric dynapenia describes an identifiable and treatable condition in youth characterized by low levels of muscular strength and power and consequent physical and psychosocial limitations not caused by neurologic or muscular disease. An interaction of modifiable physical and psychosocial factors can influence the development and progression of pediatric dynapenia. Without structured interventions that target strength deficits and build strength reserves in a supporting environment, the divergence in performance between weaker and stronger children may persist into adolescence because weaker youth may be unable to break through a so-called strength barrier. Regular participation in a well-designed youth resistance training program provides an opportunity for youth to enhance their health and fitness while acquiring the physical skills and behaviors that support an active lifestyle. New insights have highlighted the importance of initiating strength-building interventions early in life to optimize performance gains in other important components of physical fitness. Developmentally appropriate resistance training should be integrated into school- and community-based youth fitness programs and strength-building activities should take a more prominent position in public health physical activity recommendations for children and adolescents.

La potenciación post-activación (PPA) ha demostrado ser una estrategia efectiva para incrementar el rendimiento de actividades de fuerza explosiva posteriores. El objetivo del presente trabajo fue revisar la literatura científica para conocer la metodología más efectiva en la obtención de PPA en el salto vertical. Se llevó a cabo una revisión en Medline, Scielo y SportDiscus hasta el 30 de Junio de 2018. Fueron mantenidas las directrices para el diseño de revisiones establecidas por PRISMA. La revisión localizó 37 estudios (n=659). La investigación disponible sugiere que la PPA puede obtenerse aplicando diferentes metodologías, siempre y cuando se respeten las dosis adecuadas de los parámetros: a) tipo de ejercicio y medio utilizado; b) intensidad y volumen del esfuerzo; c) descanso post-esfuerzo. La adecuada manipulación de estas variables permitirá incrementar el rendimiento explosivo en sujetos entrenados. No obstante, futuras investigaciones son necesarias para establecer una metodología que permita obtener PPA en menor tiempo y con mayor duración de sus efectos. Summary: Post-activation potentiation (PPA) has been demonstrated to be effective to increase performance subsequent activities on explosive force. The aim of this study was to review the scientific literature to determine the most effective methodology to obtain PPA in vertical jump. We conducted a review in Medline, Scielo, SportDiscus and Google Scholar up to June 30, 2018. The design guidelines were obtained from PRISMA for reviews. The review of works pinpointed 37 studies (n = 659). The available research suggests that PPA can be obtained by applying different methodologies, as long as the appropriate doses of the parameters are respected: a) type of exercise and tools used; b) intensity and volume of effort; c) rest post effort. Proper design of these variables will increase the explosive performance in trained subjects. However, further research is needed to establish a methodology to achieve PPA in less time and with greater duration of its effects.

Rugby players need muscular strength and power to meet the demands of the sport, therefore, a proper assessment of the performance in rugby players should include both variables. The purpose of this study was to examine the strength and power characteristics (SPC) during the squat (SQ) and bench press (BP) in national amateur rugby players and to analyze gender- and position-related differences. A total of 47 players (30 males and 17 females, age: 25.56 ± 1.14 and 23.16 ± 1.38 years, respectively) participated in the study. The one repetition-maximum (1-RM) and SPC in SQ and BP were obtained using a Smith Machine. Then, subjects performed one set of five repetitions on the SQ and BP against six relative loads (30–40–50–60–70–80% 1-RM) using a linear transducer. Differences between genders were found in 1-RM for maximal power, kilograms lifted at maximal power, maximal power, maximal strength and maximal speed in BP (p &lt, 0.00) and 1-RM, kilograms lifted at maximal power, maximal power, maximal strength and maximal speed in SQ (p &lt, 0.00). Comparisons between variables in SQ and BP present a significant relationship (p &lt, 0.01) in SQ and BP 1-RM with kilograms lifted at maximal power (r = 0.86 and r = 0.84), maximal strength (r = 0.53 and r = 0.92) and maximal power (r = 0.76 and r = 0.93). This study confirms the importance of the SPC assessment for training prescription in rugby amateur players.

Objective Tendinopathy is a prevalent condition in young athletes and in older nonathletic people. Recent tendinopathy research has shown a growing interest in the role played by genetic factors, basically genes involved in collagen synthesis and regulation, in view of collagen disorganization typically present in tendon pathologies. Design A case-control, genotype-phenotype association study. Setting La Ribera Hospital, Valencia, Spain. Participants A group of 137 young athletes (49 with rotator cuff tendon pathology and 88 healthy counterparts) who played upper-limb-loading sports were clinically and ultrasound (US) assessed for rotator cuff tendinopathy were included. Intervention Genetic analysis was performed to determine whether there was a relationship between rotator cuff pathology and the genotype. Main outcome measures We hypothesized that the following single nucleotide polymorphisms: COL5a1 rs12722, COL11a1 rs3753841, COL11a1 rs1676486, and COL11a2 rs1799907 would be associated with rotator cuff tendinopathy. Results A direct relationship between CC genotype and bilateral US pathological images was statistically significant (χ2 = 0.0051) and confirmed by the Fisher test, with a correlation coefficient of 0.345 and a Cramer's v of 0.26. Conclusion A significant association was found between COL5a1 rs12722 genotype and rotator cuff pathology, with the CC genotype conferring increased risk of tendon abnormalities and being associated with rotator cuff pathology.

Purpose This study aimed to compare the post-activation performance enhancement (PAPE) induced by isometric and isotonic exercise on vertical jump performance. Methods 18 healthy trained men (25.8±2.7 years; 78.4±8.2 kg; 175.7±6.1 cm; 25.4±1.8 BMI; 126.72±10.8 kg squat 1-RM) volunteered for this study. They randomly performed two different PAPE protocols: Isotonic squats (ISOTS), which consisted of 2 sets of 3 repetitions at 75% of one-maximum repetition (1-RM); and isometric squats (ISOMS), which consisted of 2 sets of 4 seconds of submaximal (75% of 1-RM) isometric contraction at 90°-knee flexion. Countermovement jump (CMJ) height was tested at baseline and 4 minutes after each conditioning set. Results CMJ height significantly increased after set 1 in both PAPE protocols (ISOMS: p p p = 0.162; ES = 0.11; ISOTS: p = 0.976; ES = 0.06). No significant differences (p>0.05) were found between both isometric and isotonic exercise conditions. Conclusions Despite both protocols showed similar PAPE effects on CMJ height after set 1, none of the protocols demonstrated greater efficacy in increasing subsequent performance in healthy trained men.

The aim was to systematically review and meta-analyze the current evidence for the effects of resistance training (RT) on blood pressure (BP) as the main outcome and body mass index (BMI) in children and adolescents. Two authors systematically searched the PubMed, SPORTDiscus, Web of Science Core Collection and EMBASE electronic databases. Inclusion criteria were: (1) children and adolescents (aged 8 to 18 years); (2) intervention studies including RT and (3) outcome measures of BP and BMI. The selected studies were analyzed using the Cochrane Risk-of-Bias Tool. Eight articles met inclusion criteria totaling 571 participants. The mean age ranged from 9.3 to 15.9 years and the mean BMI of 29.34 (7.24) kg/m2). Meta-analysis indicated that RT reduced BMI significantly (mean difference (MD): −0.43 kg/m2 (95% CI: −0.82, −0.03), P = 0.03; I2 = 5%) and a non-significant decrease in systolic BP (SBP) (MD: −1.09 mmHg (95% CI: −3.24, 1.07), P = 0.32; I2 = 67%) and diastolic BP (DBP) (MD: −0.93 mmHg (95% CI: −2.05, 0.19), P = 0.10; I2 = 37%). Limited evidence suggests that RT has no adverse effects on BP and may positively affect BP in youths. More high-quality studies are needed to clarify the association between RT and BP in light of body composition changes throughout childhood and adolescence.

Objective : To comment on how COVID-19 quarantine has affected physical activity in youth and induced a pediatric depreobesity status. Key Points Scarce literature has described the impact of COVID-19 on youth levels of moderate to vigorous physical activity. Physical inactivity and social distancing could lead to physical and psychosocial problems increasing the risk of obesity and depression. Regular moderate to vigorous physical activity plays an essential role to limit or prevent the negative consequences of prolonged quarantine periods on pediatric depreobesity.

Context: High blood pressure is one of the leading preventable causes of cardiovascular death worldwide. In this regard, several studies have shown interest in the benefits of isometric exercise on blood pressure regulation. Objective: To assess whether low-intensity isometric handgrip exercise (LI-IHE) is an effective strategy to lower blood pressure levels in prehypertensive and hypertensive patients. Data Source: This study was conducted according to the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) statement and registered with PROSPERO. Potentially eligible studies were identified after a systematic search conducted on 4 international databases: PubMed, Cochrane Central Register of Controlled Trials (CENTRAL), PEDro, and SPORTDiscus. Study Selection: We included randomized controlled trials that comprised patients who received LI-IHE. Study Design: Systematic review with meta-analysis. Level of Evidence: Level 3. Data Extraction: Data related to patient characteristics, exercise programs, risk-of-bias assessment, and outcomes of interest were systematically reviewed independently by 2 authors. Results: The following reductions (mean differences) were observed after LI-IHE: systolic blood pressure (SBP), (MD) = −5.43 mm Hg; (95% CI, −8.47 to −2.39; P = 0.0005); diastolic blood pressure (DBP), −2.41 mm Hg (95% CI, −4.33 to −0.48; P = 0.01); mean arterial pressure (MAP), −1.28 mm Hg (95% CI, −2.99 to 0.44; P = 0.14). Conclusion: LI-IHE seems to lower SBP, DBP, and MAP values in prehypertensive and hypertensive adults. It appears that LI-IHE reduces, in greater magnitude, blood pressure levels in hypertensive patients, specifically in patients aged

Much of the evidence examining temporal trends in fitness among youth has found a decrease in measures of muscular strength and muscular power over recent decades. The aim of this study was to examine trends in lower body muscular power in Spanish boys over 47 years. In 1969 140 boys (10–11 years; body mass index = 19.24, SD = 2.91 kg/m2) and in 2016, 113 boys (10–11 years; body mass index = 19.20, SD = 3.15 kg/m2) were recruited. Lower body power was assessed using the vertical jump (VJ) and standing long jump (SLJ) tests. Significant differences and a large effect size were shown between groups in the SLJ (p = 0.001; d = 0.94) and the VJ (p = 0.001; d = 0.66). SLJ data in 1969 were higher (1.52 m, SD = 0.19) when compared to the 2016 data (1.34 m, SD = 0.18). The VJ performance of the 1969 sample was also higher (25.95 cm; SD = 6.58) than the 2016 sample (21.56 cm; SD = 4.72). SLJ and VJ performance of the 2016 group decreased 11.8% and 16.9%, respectively. There were no significant differences between groups in body mass index. The results indicate a secular decline in lower body muscular power in 10–11-year-old Spanish boys with no significant changes in body mass index over the 47-year study period.

Background Type 1 diabetes mellitus (T1DM) is commonly associated with premature loss of muscle function, ankle dorsiflexion and dynamic balance. Those impairments, usually, lead to physical functionality deterioration. High-intensity interval training is an efficient and safety methodology since it prevents hypoglycemia and not requires much time, which are the main barriers for this population to practice exercise and increase physical conditioning. We hypothesized that a 6-week HIIT program performed on a cycle ergometer would increase lower limb muscle power, ankle dorsiflexion range of motion and dynamic balance without hypoglycemic situations. Methods A total of 19 diagnosed T1DM subjects were randomly assigned to HIIT group (n = 11; 6-week HIIT protocol) or Control group (n = 8; no treatment). Lower limb strength was evaluated through velocity execution in squat with three different overloads. Weight bearing lunge test (WBLT) was performed to test ankle dorsiflexion range of motion and Y-Balance test (YBT) was the test conducted to analyze dynamic balance performance. Results Velocity in squat improved a 11.3%, 9.4% and 10.1% (p < 0.05) with the 50%, 60% and 70% of their own body mass overload respectively, WBLT performance increased a 10.43% in the right limb and 15.45% in the left limb. YBT showed improvements in all directions (right limb-left limb): Anterior (4.3–6.1%), Posteromedial (1.8–5.2%) and Posterolateral (3.4–4.5%) in HIIT group (p < 0.05), unlike control group that did not experience any significant change in any of the variables (p > 0.05). Conclusion A 6-week HIIT program is safe and effective to improve execution velocity in squat movement, a fundamental skill in daily living activities, as well as ankle dorsiflexion range of motion and dynamic balance to reduce foot ulcers, risk falls and functional impairments. HIIT seems an efficient and safety training methodology not only for overcome T1DM barriers for exercising but also for improving functional capacities in T1DM people.