scholarly journals Arremesso de medicine ball prediz potência de membro superior em jogadores de rugby sevens

2016 ◽  
Vol 18 (2) ◽  
pp. 166 ◽  
Author(s):  
Marco Aurélio Ferreira de Jesus Leite ◽  
Jeffer Eidi Sasaki ◽  
Camilo Luis Monteiro Lourenço ◽  
Hugo Ribeiro Zanetti ◽  
Lucas Gonsalves Cruz ◽  
...  
Keyword(s):  
Upper Limb ◽  
Bench Press ◽  
Muscle Power ◽  
Residue Analysis ◽  
Fat Free Mass ◽  
Limb Muscle ◽  
Power Prediction ◽  
Predicted Values ◽  
Rugby Players ◽  
Medicine Ball

DOI: http://dx.doi.org/10.5007/1980-0037.2016v18n2p166 The aim of this study was to develop an upper limb muscle power (PUL) prediction model using the Medicine Ball Throw Test (MBT) in rugby players. Eighteen amateur rugby players underwent the MBT test and the guided bench press exercise at 30, 40, 50 and 60% of 1. Myotest® accelerometer was positioned on the bench press bar to estimate muscle power. Linear regression was used to derive the upper limb muscle power prediction equation from the MBT distance. The residue analysis estimated the residual error of the predicted values using values obtained by Myotest®. Bland-Altman plots were used to verify agreement between actual and predicted upper limb muscle power, both in absolute Watts (W) and relative terms (W/kg of fat-free mass). There were significant correlations between actual and predicted upper limb muscle power (r = 0.834, 0.854, and 0.872) for intensities of 30%, 40% and 50%, respectively. Absolute bias of predicted values was -1.87 W (p <0.05). For muscle power predicted relative to fat-free mass, bias was 0.782 W/kg (p <0.05). Conclusion: The MBT test has high correlation with actual PUL values and it was found that the equation developed in this study has high accuracy to predict PUL in rugby players of both sexes.

scholarly journals The Effects of an 8-weeks in-season Loaded Plyometric Exercise by Elastic Band Training Program on the Peak Power, Strength, and Throwing Velocity of Junior Male Handball Players

2020 ◽  
Author(s):  
Ghaith Aloui ◽  
Souhail Hermassi ◽  
Nicola Luigi Bragazzi ◽  
Mehrez Hammami ◽  
Yosser Cherni ◽  
...  
Keyword(s):  
Body Mass ◽  
Upper Limb ◽  
Bench Press ◽  
Muscle Power ◽  
Cycle Ergometer ◽  
T Test ◽  
Limb Muscle ◽  
Plyometric Training ◽  
Elastic Band ◽  
Force Velocity

This study examined the effects of incorporating 8 weeks of biweekly upper limb loaded plyometric training (elastic band) into the in-season regimen of handball players. Trial participants were assigned between control (n = 15, age: 18.1&plusmn;0.5 years, body mass: 73.7&plusmn;13.9 kg) and experimental (n = 14, age: 17.7&plusmn;0.3 years, body mass: 76.8&plusmn;10.7 kg) groups. Measures obtained pre- and post- included a cycle ergometer force-velocity test, ball throwing velocity in three types throw, 1-RM bench press and pull-over, and anthropometric estimates of upper limb muscle volumes. Gains in the experimental group relative to controls included absolute muscle power (W) (&Delta;23.3%; t-test p&lt;0.01; d=0.083), relative muscle power (W.kg-1) (&Delta;22.3%; t-test p&lt;0.01; d=0.091), and all 3 types of ball throw (&Delta;18.6%, t-test p&lt;0.01, d=0.097 on jumping shot; &Delta;18.6%, t-test p&lt;0.01; d=0.101 on 3-step running throw; and &Delta;19.1%, t-test p&lt;0.01, d=0.072 on standing throw). Furthermore, a significant improvement by time interactions was observed in both groups on 1-RM bench press and pull-over performance. However, upper limb muscle volumes remained unchanged in both groups. We conclude that adding biweekly elastic band plyometric training to standard training improves measures important to game performance. Accordingly, such exercises can usefully be adopted as a part of handball training.

scholarly journals Using the medicine ball throw test to predict upper limb muscle power: validity evidence

2020 ◽  
Vol 22 ◽  
Author(s):  
Marco Aurélio Ferreira de Jesus Leite ◽  
Jeffer Eidi Sasaki ◽  
Camilo Luis Monteiro Lourenço ◽  
Hugo Ribeiro Zanetti ◽  
Gustavo Ribeiro da Mota ◽  
...  
Keyword(s):  
Upper Limb ◽  
Muscle Power ◽  
Field Tests ◽  
Prediction Equation ◽  
Point Of View ◽  
Time Interval ◽  
Short Time Interval ◽  
Limb Muscle ◽  
Power Prediction ◽  
Sports Coaches

Abstract Muscle power is the product of muscle force and velocity, which translates into the ability to produce force in a short time interval. Periodic evaluations of strength and power, coupled with training strategies for these capacities, are of great value to athletes and multi-sports coaches, since they are key determinants for team success. Specifically, in rugby, where passing is a predominant and determinant element of sporting success, few field tests are available for assessing upper limb muscle power. The purpose of this point of view is to correct the upper limb power prediction equation previously published by our group and to highlight its concepts and applicability in sports, especially in rugby.

scholarly journals Effects of Elastic Band Plyometric Training on Physical Performance of Team Handball Players

2021 ◽  
Vol 11 (3) ◽  
pp. 1309
Author(s):  
Ghaith Aloui ◽  
Souhail Hermassi ◽  
Lawrence D. Hayes ◽  
Roy J. Shephard ◽  
Mohamed Souhaiel Chelly ◽  
...  
Keyword(s):  
Body Mass ◽  
Upper Limb ◽  
Interaction Effect ◽  
Bench Press ◽  
Muscle Power ◽  
Control Group ◽  
Limb Muscle ◽  
Plyometric Training ◽  
Elastic Band ◽  
Post Intervention

This project investigated the effect of incorporating 8 weeks of biweekly upper limb loaded plyometric training (using elastic bands) into the in-season regimen of handball players. Participants were randomly allocated to a control group (CG) (n = 15, age = 18.1 ± 0.5 years, body mass = 73.7 ± 13.9 kg), or an experimental group (EG) (n = 14, age = 17.7 ± 0.3 years, body mass = 76.8 ± 10.7 kg). The measurements obtained pre- and post-intervention included a cycle ergometer force–velocity test, ball throwing velocity in three types of throwing, one-repetition maximum (1-RM) bench press and pull-over, and anthropometric estimates of the upper limb muscle volumes. The EG improved in absolute muscle power (W) (Δ23.3%; interaction effect p = 0.032 more than pre-intervention), relative muscle power (W·kg−1) (Δ22.3%; interaction effect p = 0.024), and all three types of ball throwing (Δ18.6%, interaction effect p = 0.019 on a jumping shot; Δ18.6%, interaction effect p = 0.017 on a three-step running throw; and Δ19.1%, interaction effect p = 0.046 on a standing throw). There was no interaction effect for the 1-RM bench press and pull-over performance. The upper limb muscle volumes remained unchanged in both groups. We concluded that adding biweekly elastic band plyometric training to standard training improves the muscle power and throwing velocity. Accordingly, such exercises should be adopted as a part of a pragmatic approach to handball training.

Development of a Human Upper Limb Volume Sensor for Biomedical Applications

2015 ◽  
Vol 799-800 ◽  
pp. 923-926
Author(s):  
Long Tao Wang ◽  
Jiao Yang ◽  
Xue Wei Zhang ◽  
Chao Yuan
Keyword(s):  
Upper Limb ◽  
Biomedical Applications ◽  
Muscle Power ◽  
Health Condition ◽  
Muscle Volume ◽  
Limb Muscle ◽  
Limb Volume ◽  
Important Indicator ◽  
Human Limb ◽  
Human Upper Limb

Muscle volume is an important indicator for the strength of the muscle. Many biomedical scientists use the muscle volume as an index for the athlete muscle power and also the health condition of the patients with muscular problems. The purpose of this study is to develop a sensor to easily and accurately gauge human upper limb muscle volume for biomedical applications. The developed sensor has many advantages for protable measurement of the human limb volume.

scholarly journals In-Season Weightlifting Training Exercise in Healthy Male Handball Players: Effects on Body Composition, Muscle Volume, Maximal Strength, and Ball-Throwing Velocity

2019 ◽  
Vol 16 (22) ◽  
pp. 4520 ◽  
Author(s):  
Souhail Hermassi ◽  
Mohamed Souhaiel Chelly ◽  
Nicola Luigi Bragazzi ◽  
Roy J Shephard ◽  
René Schwesig
Keyword(s):  
Body Composition ◽  
Body Fat ◽  
Upper Limb ◽  
Significant Interaction ◽  
Muscle Volume ◽  
Upper Limbs ◽  
Limb Muscle ◽  
Healthy Male ◽  
Maximal Strength ◽  
Medicine Ball

This study assessed the impact of 8 weeks biweekly in-season weightlifting training on the strength, throwing ability, and body composition of healthy male handball players. Twenty players (age: 21.2 ± 0.7 years, height: 1.83 ± 0.08 m, body mass: 83.3 ± 7.5 kg, body fat: 13.2 ± 1.4%, upper limb muscle volume: 3.16 ± 0.16 L) were randomly allocated between experimental (EG) and control (CG) groups. Measures of one-repetition maximal strength included bench press, pull-over, snatch, and clean and jerk. Throwing velocity was investigated by standing, running, and jump throws, and the power of the upper limbs was estimated from the total distance of a 3-kg medicine ball overhead throw. Muscle volumes were estimated anthropometrically. Training sessions comprised 3–4 sets of explosive weightlifting exercise at 75%–90% of 1RM (repetition maximum). Significant interaction effects (time x group) were found for all strength and throwing variables, ranging from ηp2 = 0.595 (pull-over) to ηp2 = 0.887 (medicine ball throw), with the largest between-group difference (more than 40%, Δd = 6.65) and effect size (d = 6.44) for the medicine ball throw, and the smallest (about 23%, Δd = 1.61) for the standing shot performance. Significant interaction effects were also detected for all anthropometric parameters (body mass: ηp2 = 0.433; body fat: ηp2 = 0.391; upper limb muscle volume: ηp2 = 0.920, with an almost 20% gain of muscle volume). It can be concluded that 8 weeks of biweekly in-season weightlifting training yielded substantial increases of muscle volume, maximal strength of the upper limbs, and ball throwing velocity in healthy handball players relative to their standard training program.

Short-term Creatine Supplementation Improves Maximum Quadriceps Contraction in Women

2003 ◽  
Vol 13 (1) ◽  
pp. 87-96 ◽  
Author(s):  
Kenneth W. Kambis ◽  
Sarah K. Pizzedaz
Keyword(s):  
Body Weight ◽  
Muscle Function ◽  
Muscle Power ◽  
Average Power ◽  
Creatine Supplementation ◽  
Time Of Day ◽  
Fat Free Mass ◽  
Muscle Performance ◽  
Testing Procedures ◽  
Post Test

Creatine monohydrate (CrH2O) supplementation has been demonstrated to increase skeletal muscle power output in men. However, its effect upon women is not as clearly defined. This study investigated the effect of oral creatine supplementation upon muscle function, thigh circumference, and body weight in women. Twenty-two consenting college-age women were assigned to 1 of 2 groups matched for dietary and exercise habits, phase of menstrual cycle, and fat-free mass (FFM). After familiarization with testing procedures, pretrial measures of muscle function (5 repetitions 60 deg · s−1 and 50 repetitions 180 deg · s−1) were conducted during maximal voluntary concentric contraction of the preferred quadriceps muscle using an isokinetic dynamometer. Subjects then ingested 0.5 g · kg−1 FFM of either CrH2O or placebo (one fourth dosage 4 times daily) in a double-blind design for 5 days. Resistance exercise was prohibited. After the ingestion phase was completed, all measures were repeated at the same time of day as during pretrials. Statistical analysis revealed time to peak torque in quadriceps extension decreased from pre-test values of 255 ± 11 ms (mean ± SEM) to post-test values of 223 ± 3 ms; average power in extension increased from 103 ± 7 W pre-test to 112 ± 7 W post-test; and, during flexion, average power increased from 59 ± 5 W pre-test to 65 ± 5 W post-test in the creatine group as compared to controls (p ≤ .05). FFM, percent body fat, mid-quadriceps circumference, skinfold thickness of the measured thigh, and total body weight did not change for both groups between trials. We conclude that CrH2O improves muscle performance in women without significant gains in muscle volume or body weight.

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