scholarly journals The effects of phosphatidic acid supplementation on strength, body composition, muscular endurance, power, agility, and vertical jump in resistance trained men

2016 ◽  
Vol 13 (1) ◽  
Author(s):  
Guillermo Escalante ◽  
Michelle Alencar ◽  
Bryan Haddock ◽  
Phillip Harvey
Keyword(s):  
Body Composition ◽  
Phosphatidic Acid ◽  
Vertical Jump ◽  
Muscular Endurance ◽  
Acid Supplementation

scholarly journals Muscular Strength, Power, and Endurance Adaptations after Two Different University Fitness Classes

Sports ◽  
2021 ◽  
Vol 9 (8) ◽  
pp. 107
Author(s):  
Brittany S. Hollerbach ◽  
Sarah J. Cosgrove ◽  
Justin A. DeBlauw ◽  
Nattinee Jitnarin ◽  
Walker S. C. Poston ◽  
...  
Keyword(s):  
College Students ◽  
Body Composition ◽  
Muscular Strength ◽  
Vertical Jump ◽  
Bioelectrical Impedance ◽  
Impedance Analysis ◽  
Future Research ◽  
Significant Group ◽  
Muscle Strengthening ◽  
Maintain Body Weight

Physical activity (PA) classes help college students add weekly PA, which can help improve health and maintain body weight. Traditional weight training (TWT) can improve strength and aerobic capacity. High-intensity functional training such as CrossFit® (CF) provides time-efficient workouts with both muscle strengthening and aerobic exercises. Limited research has compared these classes for college students. We examined changes in muscular strength, power, and endurance as well as body composition. Participants were 85 healthy college students enrolled in TWT (n = 36, age 22.6 ± 4.1 years, 72.2% male) or CF (n = 49, age 21.8 ± 3.2 years, 55.1% male) classes meeting twice/wk for 8 weeks between October 2017 and May 2018. Baseline and posttest measurements included a vertical jump, grip strength, a 2 min push-up test, a 1 min squat test, height, weight, and a bioelectrical impedance analysis. Although no significant group × time interactions were found, there was a significant main effect of time for push-ups and squats (both p < 0.001). Participants enjoyed the classes and most planned to continue. Both classes improved muscular endurance although no significant differences were found between them. Activity classes provide college students with an option for increasing their weekly PA and help maintain body composition. Future research should examine the benefits from longer or more frequent classes.

scholarly journals Age-Related Decline in Vertical Jumping Performance in Masters Track and Field Athletes: Concomitant Influence of Body Composition

2021 ◽  
Vol 12 ◽  
Author(s):  
José R. Alvero-Cruz ◽  
Mieszko Brikis ◽  
Phil Chilibeck ◽  
Petra Frings-Meuthen ◽  
Jose F. Vico Guzmán ◽  
...  
Keyword(s):  
Body Composition ◽  
Old Age ◽  
Phase Angle ◽  
Vertical Jump ◽  
Track And Field ◽  
Fat Free Mass ◽  
Jump Performance ◽  
Age Related ◽  
Vertical Jumping ◽  
Masters Athletes

Vertical jumping power declines with advancing age, which is theoretically explicable by loss of muscle mass and increases in body fat. However, the results of previous cross-sectional studies remain inconsistent on these relationships. The present study included 256 masters athletes who competed at the 2018 track and field world championships in Málaga, Spain. We assessed body composition with bioelectrical impedance (Inbody S10) and vertical jumping power with a Leonardo ground reaction force platform. Relationships between age, jumping power, and body composition were analyzed by correlation and regression analyses. Hierarchical multiple regression analysis was used to evaluate effects of each factor on vertical jumping power. Age-related rates of decreases in maximal power and jump height were similar between male and female athletes. Percent fat-free mass and percent body fat were negatively and positively, respectively, associated with age in masters athletes and were comparable to those previously observed in the general population. Moreover, these effects in body composition can, to a great extent, explain the age-related decline in jumping power, an effect that seems at least partly independent of age. Finally, the multiple regression model to determine independent predictors of vertical jump performance yielded an overall R2 value of 0.75 with the inclusion of (1) athletic specialization in power events, (2) percent fat-free mass, and (3) phase angle. However, partial regression yielded significant effects of age, but not gender, on peak power, even when adjusting for athletic specialization, percent fat-free mass, and phase angle. We concluded that loss of skeletal muscle mass and changes in bio-impedance phase angle are important contributors to the age-related reduction in anaerobic power, even in adults who maintain high levels of physical activity into old age. However, age per se remains a significant predictor of vertical jump performance, further demonstrating deteriorated muscle quality at old age (sarcosthenia).

The effect of alpha-lipoic acid supplementation and electrical isotonic contraction on anthropometric parameters, body composition and angiogenesis factor, sirtunin-1 and peroxisome proliferator-activated receptor-γ coactivator-1α in obese people under a weight loss regime: A study protocol for a randomized controlled clinical trial

2020 ◽  
pp. 026010602092683
Author(s):  
Majid Mohammadshahi ◽  
Elahe Zakizadeh ◽  
Kambiz Ahmadi-Angali ◽  
Majid Ravanbakhsh ◽  
Bijan Helli
Keyword(s):  
Weight Loss ◽  
Body Composition ◽  
Lipoic Acid ◽  
Peroxisome Proliferator ◽  
Alpha Lipoic Acid ◽  
Anthropometric Parameters ◽  
Obese People ◽  
Isotonic Contraction ◽  
Angiogenesis Factor ◽  
Acid Supplementation

Background: Obesity is defined as a chronic disease, and is known as a public health problem in developed and developing countries. Several studies have shown the effects of anti-obesity of α-lactalbumin. Aim: This study was designed to investigate the effect of alpha-lipoic acid supplementation and electrical isotonic contraction on anthropometric parameters, body composition and angiogenesis factor, sirtunin-1 and peroxisome proliferator-activated receptor-γ coactivator-1α (PGC1α) in obese people under a weight loss regime. Methods: Obese people who meet the inclusion criteria are included. Participants are randomly divided into four groups (alpha-lipoic (1200 mg) +weight loss regime group; Faradic (three 1 hour sessions) + weight loss regime group; alpha-lipoic (1200 mg) + Faradic (three 1 hour sessions) + weight loss regime group; control group (1200 mg placebo) for 2 months. At the beginning and the end of the study, demographic information, dietary intake, anthropometric parameters, body composition and serum levels of the angiogenesis factor (sirtunin-1, PGC1α and nitric oxide) are measured. Conclusion: Recent studies reported the anti-obesity effects of alpha-lipoic acid. This study is novel, since a similar study has not yet been carried out. This study evaluates the effect of 600 mg of alpha-lipoic acid supplementation or having three sessions of 1 hour per week electrical isotonic contraction induced by Faradic for 2 months alone or in combination in obese people that are undergoing a weight loss regime. Trial registration: Iran Clinical Trials Registry, ID: IRCT20131117015424N2. Registered 2018-04-02

The effects of an 8-week resistance training intervention on muscular strength, power, and body composition in collegiate female dancers

2020 ◽  
Vol 16 (4) ◽  
pp. 277-284
Author(s):  
D.J. Sanders ◽  
T.D. Cardaci ◽  
B.A. McFadden ◽  
A.J. Walker ◽  
B.N. Bozzini ◽  
...  
Keyword(s):  
Body Composition ◽  
Resistance Training ◽  
Injury Risk ◽  
Muscular Strength ◽  
Ventilatory Threshold ◽  
Vertical Jump ◽  
Maximal Oxygen Consumption ◽  
Weight Ratio ◽  
Training Group ◽  
Control Group

Although weight training can enhance muscular strength, power, and body composition, outdated beliefs about muscular adaptations have limited its use in dancers. The purpose of this study was to investigate the effect of an 8-week progressive overload resistance-training (RT) program on muscular strength, power and body composition in collegiate female dancers. Sixteen subjects were randomised into a dance-only control group (CON) or an RT + dance training group (EXP). EXP met 3×/week for RT. Body fat (%BF), lean body mass (LBM), girth measurements, vertical jump (VJ), muscular strength (1-repetition max (RM) squat (SQT) and 1-RM bench press (BP)), maximal oxygen consumption (V̇O2max, and ventilatory threshold (VT)) were assessed pre- and post-study. Baseline performance characteristics across all subjects were: %BF=28.2±5.7%, VJ=33.4±5.4 cm, SQT=57.5±12.1 kg, BP=30.1±7.6 kg, (V̇O2max)=40.6±3.4 ml/kg/min, and VT=71.2±3.4%VO2max. Strength improvements were significantly greater for EXP than CON (P<0.05). No significant differences were found between groups for %BF, LBM, girth measurements, VJheight, (V̇O2max), or VT (P>0.05). However, a trend was observed for VJpower favouring EXP (P=0.07). EXP significantly improved strength, while no significant changes were observed in body composition. However, EXP improved their power-to-weight ratio, which may be a positive performance adaptation. RT for dancers can improve strength and power, allowing enhanced muscular loading and fatigue-resistance, which may optimise performance and decrease injury risk.

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