Biomechanical Parameters that Correlate with Peak Shoulder Extension Torque during Arm Support Phase of Kicking Pullovers

DOI Web Site 参考文献6件
  • Konosu Akira
    Department of Mechanical Engineering and Intelligent Systems, The University of Electro-Communications
  • Yoshioka Shinsuke
    Graduate School of Arts and Sciences, The University of Tokyo
  • Fukashiro Senshi
    Japan Women's College of Physical Education

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<p>The purpose of this study was to clarify the technical factors that reduce the shoulder joint torque required for successful kicking pullovers. Successful movements of 14 adult males were analyzed using a sagittal plane model, and correlations were determined between the peak shoulder extension torque and biomechanical parameters during the arm support phase (AS phase, from the takeoff to inverted position). The peak torque was positively correlated with the bar reaction force (BRF) at peak timing, but not with the moment arm of the BRF around the shoulder joint. The center of mass (CoM) rose linearly from right under the bar during the AS phase for participants with smaller peak torques, while it rose backward in an arc from the front of the bar for participants with larger torques. The peak torque was negatively correlated with distance between the bar and shoulder joint during the AS phase. Participants with larger peak torques might have tried to reduce the moment arm by keeping the shoulder joints near the bar. However, our results suggest that a large distance between the shoulders and the bar allows small CoM acceleration and shoulder joint torques, as in participants with smaller peak torques.</p>

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