American Journal of Sports Science

Volume 9, Issue 4, December 2021

  • How Far Does Physical Training Modulate the Motor Unit Activities of Respiratory Muscles in Female Athletes: An Electromyographic Study

    Priya Nandy, Anupam Bandyopadhyay

    Issue: Volume 9, Issue 4, December 2021
    Pages: 73-77
    Received: Sep. 01, 2021
    Accepted: Sep. 26, 2021
    Published: Oct. 05, 2021
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    Abstract: The pulmonary capacities of a person depend on the activities of the respiratory muscles. The Motor neurons and its units of the respiratory muscles regulate breathing and can be studied by using surface electromyography. The effect of physical training on motor unit involvement was the main concern of this study and the other is to understand the ... Show More
  • The Contact Between Sports Talent Identification and Tracking of Tall and Short Height

    Hikaru Tanaka, Katsunori Fujii, Yusaku Ogura

    Issue: Volume 9, Issue 4, December 2021
    Pages: 78-84
    Received: Oct. 08, 2021
    Accepted: Oct. 26, 2021
    Published: Oct. 30, 2021
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    Abstract: Understanding the qualities of elite athletes is necessary in trying to determine ability as sports talent. However, there are few findings based on analyses that objectively grasp the characteristics of exceptional athletes. If the characteristics of changes with age in tall and short height ranking could be clarified, the physical characteristics... Show More
  • Structure of Application of Inertial Functional Loads on Kinematic and Dynamic Running Performance in the Phase of Maximum Speed

    Armin Zecirovic, Bojan Bjelica, Adem Preljevic, Rijad Zecirovic

    Issue: Volume 9, Issue 4, December 2021
    Pages: 85-91
    Received: Nov. 03, 2021
    Accepted: Nov. 19, 2021
    Published: Nov. 25, 2021
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    Abstract: The aim of this research was to induce changes in the kinematic and dynamic performance of running at maximum speed within the training with the application of additional inertial load, as well as to determine the adaptation processes in the observed variables that are supposed to significantly affect the maximum running speed. The research include... Show More
  • Exploration of Viewpoints in Identification of Gymnastic Talent with the Back Hip Circle

    Hikaru Tanaka, Katsunori Fujii, Yuki Takeyama

    Issue: Volume 9, Issue 4, December 2021
    Pages: 92-97
    Received: Nov. 12, 2021
    Accepted: Nov. 30, 2021
    Published: Dec. 07, 2021
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    Abstract: In Japan, students attempt the back hip circle in physical education class in school. It is considered a simple teaching material with which children can experience feelings of achievement and pride. A major factor behind this is that schoolyards in Japan do not have an environment for gymnastics, equipped only with horizontal bars. Therefore, the ... Show More
  • Measuring Instruments for Assessing the Explosive Power of the Lower Limbs in Volleyball Players

    Armin Zecirovic, Rijad Zecirovic, Emir Bisevac, Ilma Capric, Raid Mekic, Adem Mavric

    Issue: Volume 9, Issue 4, December 2021
    Pages: 98-102
    Received: Nov. 15, 2021
    Accepted: Dec. 03, 2021
    Published: Dec. 10, 2021
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    Abstract: The most accurate data for measuring the explosive power of the lower extremities are provided by modern measuring instruments and apparatus for measuring the maximum isometric force of the leg extensors with associated hardware and software, tensiometric probe inside the foot platform, force reader with PC such as Quattro Jump, Ergo Jump, Myotest.... Show More