| Abstract | A Predicative Study in the Light of Angular Kinematic Variables of Body
Joints during the Hop in Triple Jump
Dr. Wahid Sobhy Abd El-Ghaffar
Abstract:
The current research aims at concluding predicative equations for the performance level of triple jump in the light of some angular kinematic variables through identifying the correlation between angular kinematic variables and digital record during the hop phase in triple jump and the relative contribution of angular kinematic variables of the hop phase in digital record of triple jump in addition to concluding predicative equations for the digital record through angular kinematic variables of the hop phase in triple jump. The researcher used the descriptive (analytical) approach. The researcher purposefully chose triple jump finalists of Egypt’s Track and Field Championship (first class) 2013 (n=6). The best Three trials for each athlete were recorded and this makes (18) trials for analysis. Results indicated that indicators contributing in the digital record at the beginning of damping for first takeoff are knee angular displacement, shoulder angular displacement, hip angular acceleration, ankle angular displacement and knee angular acceleration. Indicators contributing in the digital record at the beginning of damping for second takeoff are elbow angular displacement and ankle angular acceleration. Indicators contributing in the digital record at the end of damping/ beginning of pushing for first takeoff are ankle angular velocity and knee angular displacement. Indicators contributing in the digital record at the end of damping/ beginning of pushing for second takeoff are knee angular displacement, ankle angular displacement, shoulder angular displacement and ankle angular acceleration. Indicators contributing in the digital record at the end of pushing for first takeoff are hip angular displacement, wrest angular acceleration, shoulder angular displacement, ankle angular velocity, wrest angular displacement, elbow angular acceleration and hip angular velocity. Indicators contributing in the digital record at the end of pushing for first takeoff are ankle angular displacement, ankle angular velocity and hip angular displacement.
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