American Journal of Sports Science

Volume 10, Issue 3, September 2022

  • The Influence of Biomechanical Factors on Belle Piked Highly Executed Gymnastic Performance on the Parallel Bars

    Arangala Witharanage Suraj Chandana

    Issue: Volume 10, Issue 3, September 2022
    Pages: 40-45
    Received: May 10, 2022
    Accepted: Jun. 30, 2022
    Published: Jul. 12, 2022
    DOI: 10.11648/j.ajss.20221003.11
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    Abstract: The purpose of this study was to identify the correct technique to perform highly executed long swing gymnastic movement: Belle Piked (BP). Two national Chinese gymnasts (58kg, 60.3kg) performed 4 repetitions of BP movement, on the middle of parallel bars with zero deduction. Reflective markers (14mm) and ten high-speed cameras (ViconT40S, 100Hz) w... Show More
  • Analysis of the Physical Performance and Decision-Making of Football Referees in Hot and Humid Environments

    Mohamed Houssein Ali, Pierre-Marie Lepretre, Soubere Mahamoud Yonis, Maryne Cozette, Youssouf Ballah, Said Ahmaidi

    Issue: Volume 10, Issue 3, September 2022
    Pages: 46-51
    Received: May 24, 2022
    Accepted: Jun. 29, 2022
    Published: Jul. 12, 2022
    DOI: 10.11648/j.ajss.20221003.12
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    Abstract: The aim of the present study was to assess the acclimated central referee’s activities during matches conducted under hot and humid conditions. The physical activity and number, the rightness or error of decisions taking was determined during Official matches of the 2018-2019 Djibouti’s Football Championship. All matches were filmed with a digital ... Show More
  • Proposal for a Motor Ability Development Model Based on Fujimmon’s Growth Curves

    Katsunori Fujii

    Issue: Volume 10, Issue 3, September 2022
    Pages: 52-59
    Received: Jun. 23, 2022
    Accepted: Jul. 06, 2022
    Published: Jul. 12, 2022
    DOI: 10.11648/j.ajss.20221003.13
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    Abstract: Scammon’s growth curves are often cited in discussions of motor ability development and training theory. However, Scammon’s theory of growth curves was proposed more than 90 years ago, and its scientific value is weak. Therefore the growth curves of Scammon was reexamined, and Fujimmon growth curves was newly proposed. If based on Fujimmon’s growth... Show More
  • The Difference of Angles Between Down-The-Side Line Shot and Cross Shot of the Two-Handed Backhand Stroke in Tennis as a Basis for Skill Training

    Hager Salah Abdou, Ahmed Abdel Fatah Hassanien

    Issue: Volume 10, Issue 3, September 2022
    Pages: 60-65
    Received: Jun. 17, 2022
    Accepted: Jul. 08, 2022
    Published: Jul. 18, 2022
    DOI: 10.11648/j.ajss.20221003.14
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    Abstract: The purpose of this study was to investigate the difference in angles between a Cross shot and Down-The-Side line shot stroke for the skill of the Tow-Handed backhand in beginning of back swing, end of back swing, ball impact, and end of follow through. There are 9 players in the Top -10 of Association of Tennis professional (ATP) are used two-hand... Show More
  • Effects of a High-Protein Ketogenic Diet on Strength Training Performance and Body Composition in Recreational Weight Lifters

    Shivang Sharadkumar Patel

    Issue: Volume 10, Issue 3, September 2022
    Pages: 66-83
    Received: Jul. 31, 2022
    Accepted: Aug. 19, 2022
    Published: Aug. 31, 2022
    DOI: 10.11648/j.ajss.20221003.15
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    Abstract: Weight Lifters often manipulate dietary protein to build muscles, and one dietary approach is a High-Protein Ketogenic Diet (HPKD). However, very little research has been conducted on the effects of a high-protein ketogenic diet on strength training performance and muscle building outcome goals. Therefore, the purpose of the present study is to inv... Show More