American Journal of Sports Science

Volume 8, Issue 1, March 2020

  • Arm/Shoulder Specific Strength Device for Throwers

    Brahim Agrebi, Rachid Bouagina, Akram Fray, Hatem Abidi, Fethi Guemira, Mounir Bezzarga, Nooman Guelmami, Narjes Houas, Sofien Kasmi, Oussama Ben Mohamed, Riadh Khalifa

    Issue: Volume 8, Issue 1, March 2020
    Pages: 1-9
    Received: Jan. 08, 2020
    Accepted: Jan. 20, 2020
    Published: Feb. 04, 2020
    Abstract: Research has proposed various ways to develop ballistic/explosive arm rotational movements for throwers but demonstrated inherent limitations for the lack of traditional resistance training respecting sport-specific tasks. A prototype device was conceived for ballistic multi-joint throwing exercises. Forty-three high-level competitive U19 male hand... Show More
  • Composition of Change in Phase Angle with Age in Japanese Children

    Katsunori Fujii, Kentaro Hayakawa

    Issue: Volume 8, Issue 1, March 2020
    Pages: 10-16
    Received: Feb. 17, 2020
    Accepted: Feb. 26, 2020
    Published: Mar. 10, 2020
    Abstract: Phase angle (PhA) is a value derived from the resistance (R) in intra- and extracellular fluid and the reactance (Xc) in the cell membrane, measured by bioelectrical impedance analysis (BIA). It has also been referred to as a nutritional index that shows the level of cellular activation, becoming a focus of attention in recent years. However, very ... Show More
  • Myocardial Strain Imaging in Asian Competitive Athletes – A Single Centre Study

    Yann Shan Keh, Puay Joo Tan, Siang Chew Chai, Benedict Tan, Khim Leng Tong

    Issue: Volume 8, Issue 1, March 2020
    Pages: 17-21
    Received: Jan. 24, 2020
    Accepted: Mar. 09, 2020
    Published: Mar. 23, 2020
    Abstract: To date there has been limited literature pertaining to Athlete’s Heart Syndrome in Asian athletes, especially for those in South East Asia. We performed a single center cross-sectional case-control study of elite athletes and controls, using current speckle-tracking echocardiography (STE) and tissue Doppler imaging (TDI)-based techniques. We reana... Show More
  • Kinematic Analysis of Support Phase Characteristics in Women Race Walking

    Dibendu Kr. Bej

    Issue: Volume 8, Issue 1, March 2020
    Pages: 22-28
    Received: Mar. 14, 2020
    Accepted: Mar. 27, 2020
    Published: Apr. 13, 2020
    Abstract: Race walking requires a great deal of effort to compete successfully which includes a unique combination of technique, extreme physical exertion and mental focus. Unlike running, race walking is composed by support phase (heel strike, mid-stance and toe off) and swing phase. The aim of this study was to analyze the association between different kin... Show More