The Effects of Movable Range of Shoulder Joint and Muscular Strength and Muscular Endurance of Upper·Lower Limbs on Athletic Performance of Soft Tennis Players

Purpose: Little is known about the effect of sleep restriction (SR) on different domains of athletes’ physical performance. Therefore, the aim of this randomized, counterbalanced, and crossover study was to evaluate the effect of acute SR on sport-specific technical and athletic performance in male junior tennis players. Methods: Tennis players (N = 12; age 15.4 ± 2.6 y) were randomly allocated to either a sleep-restriction condition (SR, n = 6), where they experienced acute sleep restriction the night before the test session (≤5 h of sleep), or to a control condition (CON, n = 6), where they followed their habitual sleep–wake routines. Testing procedures included 20 left and right serves, 15 forehand and backhand crosscourt shots, and a repeated-sprint-ability test (RSA). The accuracy of serves and shots was considered for further analysis. One week later, players of SR joined CON, and players of CON experienced SR, and all test procedures were repeated. Results: Significant decrease in the accuracy of right (−17.5%, P = .010, effect size [ES] = 1.0, moderate) and left serve (−14.1%, P = .014, ES = 1.2, large), crosscourt backhand (−23.9%, P = .003, ES ≥ 2.0, very large), and forehand shot (−15.6%, P = .014, ES = 1.1, moderate) were observed in SR compared to CON, while RSA was similar in both conditions. Conclusion: Coaches and athletes at the team and individual level should be aware that 1 night of SR affects sport-specific but not athletic performance in tennis players.

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European normative values for physical fitness in children and adolescents aged 9–17 years: results from 2 779 165 Eurofit performances representing 30 countries

British Journal of Sports Medicine ◽

10.1136/bjsports-2017-098253 ◽

2017 ◽

Vol 52 (22) ◽

pp. 1445-1456 ◽

Cited By ~ 72

Author(s):

Grant R Tomkinson ◽

Kevin D Carver ◽

Frazer Atkinson ◽

Nathan D Daniell ◽

Lucy K Lewis ◽

...

Keyword(s):

Physical Fitness ◽

Children And Adolescents ◽

Muscular Strength ◽

Normative Values ◽

Muscular Endurance ◽

Muscular Power ◽

Monitoring And Surveillance ◽

Lms Method ◽

Better Than ◽

Apparently Healthy

ObjectiveTo develop sex-specific and age-specific normative values for the nine Eurofit tests in European children and adolescents aged 9–17 years.MethodsA systematic review was undertaken to identify papers that explicitly reported descriptive results for at least one of nine Eurofit tests (measuring balance, muscular strength, muscular endurance, muscular power, flexibility, speed, speed-agility and cardiorespiratory fitness (CRF)) on children and adolescents. Data were included on apparently healthy (free from known disease/injury) children and adolescents aged 9–17 years. Following harmonisation for methodological variation where appropriate, pseudodata were generated using Monte Carlo simulation, with population-weighted sex-specific and age-specific normative centiles generated using the Lambda Mu Sigma (LMS) method. Sex-specific and age-specific differences were expressed as standardised differences in means, with the percentage of children and adolescents with healthy CRF estimated at the sex-age level.ResultsNorms were displayed as tabulated centiles and as smoothed centile curves for the nine Eurofit tests. The final dataset included 2 779 165 results on children and adolescents from 30 European countries, extracted from 98 studies. On average, 78% of boys (95% CI 72% to 85%) and 83% of girls (95% CI 71% to 96%) met the standards for healthy CRF, with the percentage meeting the standards decreasing with age. Boys performed substantially (standardised differences >0.2) better than girls on muscular strength, muscular power, muscular endurance, speed-agility and CRF tests, but worse on the flexibility test. Physical fitness generally improved at a faster rate in boys than in girls, especially during the teenage years.ConclusionThis study provides the largest and most geographically representative sex-specific and age-specific European normative values for children and adolescents, which have utility for health and fitness screening, profiling, monitoring and surveillance.

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The effects of post-exercise whey vs. casein protein ingestion on muscular strength, muscular endurance, and body composition in older women (50-70 years of age)

Journal of the International Society of Sports Nutrition ◽

10.1186/1550-2783-8-s1-p27 ◽

2011 ◽

Vol 8 (S1) ◽

Cited By ~ 1

Author(s):

Stacie L Urbina ◽

Andrew White ◽

Josh Shaw ◽

Colin Wilborn ◽

Brian Brabham

Keyword(s):

Body Composition ◽

Older Women ◽

Muscular Strength ◽

Muscular Endurance ◽

Post Exercise ◽

Protein Ingestion ◽

Casein Protein

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Effect of Lumbar Extensor Progressive Resistance Exercise versus Core Stability Exercise on Lumbar Extension Muscular Strength and Core Muscular Endurance in Soldiers

The Spine Journal ◽

10.1016/j.spinee.2014.08.125 ◽

2014 ◽

Vol 14 (11) ◽

pp. S47-S48

Author(s):

John M. Mayer ◽

John Childs ◽

Jennifer Libous ◽

Henian Chen ◽

William S. Quillen

Keyword(s):

Resistance Exercise ◽

Muscular Strength ◽

Core Stability ◽

Muscular Endurance ◽

Lumbar Extension ◽

Progressive Resistance Exercise ◽

Progressive Resistance

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177 THE EFFECTS OF ACUTE HYPEROXIA ON HEART RATE, MUSCULAR STRENGTH AND MUSCULAR ENDURANCE

Medicine & Science in Sports & Exercise ◽

10.1249/00005768-199405001-00178 ◽

1994 ◽

Vol 26 (Supplement) ◽

pp. S32

Author(s):

R. C. Snyder ◽

D. M. Kleiner

Keyword(s):

Heart Rate ◽

Muscular Strength ◽

Muscular Endurance

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Variants of strength athletics (progression) and its application in training practice especially considering the speed of exercise performance

Journal of Combat Sports and Martial Arts ◽

10.5604/01.3001.0010.4616 ◽

2017 ◽

Vol 8 (1) ◽

pp. 1-7

Author(s):

Marek Kruszewski ◽

Agnieszka Olszewska ◽

Stanisław Kuźmicki ◽

Artur Kriszewski ◽

Karol Landowski ◽

...

Keyword(s):

Athletic Performance ◽

Muscular Strength ◽

Complex Structure ◽

Combat Sports ◽

Specific Strength ◽

Training Cycle ◽

Fast Tempo ◽

Muscle Groups ◽

Training Practice ◽

Large Muscle

The aim of the study was to present the modifications of strength athletics, enabling the competitors to achieve maximal muscular stimulations, leading to the development of specific strength in large muscle groups. The application goal was also determined, involving presentation of exercise sets used in strength sports and combat sports, developing specific strength in major muscle groups, particularly considering the tempo of exercising in each training sub-periods. The reference sources are reviewed as well as the earlier publications, describing the basic modalities of strength athletics. The versions of this approach connected with methodical recommendations of Polish Strength Athletics School, established by Augustyn Dziedzic are also presented. Each variant of strength athletics is described in terms of its usefulness for developing maximal strength, anaerobic endurance, mastering motor habits (techniques), applying exercises which have a similar or a more complex structure than these previously applied and a fast tempo of exercising. Tempo variations are attributed to each sub-period of the training cycle, considering the frequency of application and exercise sets, aimed at the development of large muscle groups are presented. It is emphasized that strength athletics should be regarded as a set of approaches, which, regularly applied, allow considerable increases of maximal muscular strength, anaerobic endurance and mastering motor habits. It has been confirmed that the application of different modalities of exercising tempo not only enriches their resources, but also can increase muscular strength and power, significantly contributing to the improvement of athletic performance in combat sports.

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