Comparison of Dynamic Parameters of Landing from Different Heights of Professional Elite Volleyball Players
Publish place: Journal of Advanced Sport Technology، Vol: 6، Issue: 1
Publish Year: 1401
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JJAST-6-1_002
تاریخ نمایه سازی: 2 آبان 1401
Abstract:
This study aims to compare the dynamic parameters of professional elite volleyball players when landing from different heights. ۱۵ volleyball players selected based on availability participated in the study. The studied skill for different height was set to a percentage of the maximum jump elevation (۱۰۰% - ۷۵% - ۵۰%). A repeated measures ANOVA model was used to determine the measurements variance differences using SPSS software version ۲۴. The results showed that landing from higher height increased the angular velocity of the rotational axis of the foot while the peak of angular acceleration was lower at the highest elevation. The linear velocity peak also showed lower values at the highest elevation, while the linear acceleration increased with increasing landing elevation. Despite the insignificant effect of different height on the vertical ground reaction force (vGRF) factor, the peak of ankle joint torque in the anterior-posterior axis increased with increasing elevation. Similarly, the maximum ankle angle in the anterior-posterior axis was higher at high elevation than at low elevation. The results showed that volleyball players try to improve the absorption of energy by increasing the range of motion of the ankle joint in the anterior-posterior axis at high elevation.
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Authors
Farzaneh Shokrian
Department of Sports Biomechanics, Central Tehran Branch, Islamic Azad University
Davood Khezri
Department of Sport Biomechanics and Technology, Sport Sciences Research Institute, Tehran, Iran.
Hasan Matinhomaee
Department of Sports Physiology, Central Tehran Branch, Islamic Azad University
Ali Fatahi
Assistant Professor, Department of sports Biomechanics, Faculty of physical education and sport sciences, Islamic Azad university, Central Tehran branch, Tehran, Iran
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