American Journal of Sports Science

Volume 2, Issue 2, March 2014

  • Slow Recovery of the Right and Left Ventricular Deformation after Conversion from Atrial Fibrillation

    Roman Leischik, Henning Littwitz

    Issue: Volume 2, Issue 2, March 2014
    Pages: 13-16
    Received: 2 January 2014
    Published: 20 February 2014
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    Abstract: Atrial fibrillation (AF) is a possible complication of sport in middle-aged athletes. When sinus rhythm has been restored, at what time is deformation restored too? This question has never been answered. We studied an one 47-year old cyclist and runner with acute lone atrial fibrillation. A day before, he trained hard intervals and felt at the nex... Show More
  • The Effect of Vestibular Stimulation on Eye-Hand Coordination and Postural Control in Elite Basketball Players

    William W. N. Tsang, Shirley S. M. Fong, Yoyo T. Y. Cheng, Dinisha D. Daswani, Hiu Yan Lau, Carina K. Y. Lun, Shamay S. M. Ng

    Issue: Volume 2, Issue 2, March 2014
    Pages: 17-22
    Received: 9 January 2014
    Published: 28 February 2014
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    Abstract: The game of basketball requires complex eye-hand coordination and exceptional postural control ability. This study compared eye-hand coordination and postural control before and after vestibular stimulation in trained basketball players with healthy, age-matched controls. Fifteen trained basketball players and 17 healthy adults (all male, age range... Show More
  • The Effects of Eccentric Training on Electromyographic Activity and Performance in Soccer Players

    Stergios Komsis, Georgios Komsis, Ioannis Gissis, Christos Papadopoulos, Dimitrios Patikas, Lida Mademli, Panagiotis Papadopoulos, Vassilis Paschalis, Ioannis S. Vrabas

    Issue: Volume 2, Issue 2, March 2014
    Pages: 23-29
    Received: 6 February 2014
    Published: 28 February 2014
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    Abstract: The purpose of the present study was to investigate the effects of eccentric training using a multi-joint dynamometer, on the electromyographic activity of rectus femoris, biceps femoris and medial gastrocnemius during counter movement jumps, drop jumps as well as during maximal eccentric actions. Sixteen amateur soccer players was divided into equ... Show More
  • Assessment of Patellar Alignment in Different Postures

    Hugo Machado Sanchez, Eliane Gouveia de Morais Sanchez, Mario Antonio Baraúna, Roberto Sérgio de Tavares Canto

    Issue: Volume 2, Issue 2, March 2014
    Pages: 30-34
    Received: 18 November 2013
    Published: 10 March 2014
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    Abstract: Introduction: The evaluation of Q angle is a common clinical practice however standardization regarding the best way does not exist. Objective: Compare the value of the Q angle in different static positions and rotations of lower limbs. Methods: Evaluated 56 volunteers, 30 women and 26 men, in the supine andunder static weight-bearing positions wit... Show More
  • The Relative Age Effect in the 2013 FIFA U-17 Soccer World Cup Competition

    Ridha Sallaoui, Karim Chamari, Moktar Chtara, Youssef Manai, Mourad Ghrairi, Mohcine Belhaouz, Abdullah Baroon

    Issue: Volume 2, Issue 2, March 2014
    Pages: 35-40
    Received: 12 February 2014
    Published: 20 March 2014
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    Abstract: Purpose: The purpose of this study was to check the eventual existence of any Relative Age Effect (RAE) in the recent 2013’ FIFA Male Under-17 (U-17) World Cup Football tournament. The data pertaining to the players who participated in to that event were collected from the FIFA website. They included the players’ dates of birth (day, month and year... Show More
  • Physiological Performance and Cardiac Function in Female Ironman- Triathletes

    Roman Leischik, Spelsberg N., Littwitz H., Dworrak B.

    Issue: Volume 2, Issue 2, March 2014
    Pages: 41-47
    Received: 10 March 2014
    Published: 30 March 2014
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    Abstract: Background: Data about physiological performance of female ironman-triathletes are rare. However, some papers reported endurance sport may cause damage of the right or left ventricle even in females. Aim: The goal of this study was to assess prospectively the right/left ventricular function and physiological performance in female ironman-athletes (... Show More
  • Match Participations, Field Position, Length of Team Membership: Their Impact on Team Cohesion

    Gioldasis Aristotelis, Stavrou Nektarios, Sotiropoulos Aristomenis, Psychountaki Maria

    Issue: Volume 2, Issue 2, March 2014
    Pages: 48-52
    Received: 25 March 2014
    Accepted: 8 April 2014
    Published: 10 April 2014
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    Abstract: The aim of the current study was to examine the relationship between cohesion and its antecedents (match participations, field position and length of team membership). 173 players of Greek amateur leagues participated in the study. They completed the Greek version of the 18-item Group Environment Questionnaire, and also improvised scales for the ot... Show More