Theoretical Study of Factors Affecting Ball Velocity in Instep Soccer Kicking
Theoretical Study of Factors Affecting Ball Velocity in Instep Soccer Kicking
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DOI：
10.1123/jab.28.3.258
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发表时间：
2012-07-01
影响因子：
1.4
通讯作者：
Maruyama, Takeo
中科院分区：
文献类型：
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作者：
Ishii, Hideyuki;Yanagiya, Toshio;Maruyama, Takeo
本研究的目的是探讨影响足底足底踢球最后时刻(t(1))球速度的因素。五名经验丰富的大学男子足球运动员使用一步法在不同的脚部撞击点进行了最大限度的足背踢球。踢腿的动作被高速摄像机以2500帧/秒的速度二维捕捉到。以碰撞动力学理论为基础，推导了球速在t(1)时的理论方程。通过将撞击点与球速的理论关系式与实验关系式进行比较，验证了理论公式的正确性。利用该理论方程，模拟了落点与球速之间的关系。仿真结果表明，在冲击阶段的初始时刻，脚的速度对球速度的影响比其他因素更大。仿真结果还表明，减小球碰撞时的踝关节反作用力将产生最大球速度的撞击点向脚趾侧移动，减小球碰撞时的踝关节扭矩使产生最大球速度的撞击点向脚踝侧移动。
The objective of this study was to investigate the factors affecting ball velocity at the final instant of the impact phase (t(1)) in full instep soccer kicking. Five experienced male university soccer players performed maximal full instep kicks for various foot impact points using a one-step approach. The kicking motions were captured two dimensionally by a high-speed camera at 2,500 fps. The theoretical equation of the ball velocity at t(1) given in the article was derived based on the impact dynamics theory. The validity of the theoretical equation was verified by comparing the theoretical relationship between the impact point and the ball velocity with the experimental one. Using this theoretical equation, the relationship between the impact point and the ball velocity was simulated. The simulation results indicated that the ball velocity is more strongly affected by the foot velocity at the initial instant of the impact phase than by other factors. The simulation results also indicated that decreasing the ankle joint reaction force during ball impact shifts the impact point that produces the greatest ball velocity to the toe side and decreasing the ankle joint torque during ball impact shifts the impact point that produces the greatest ball velocity to the ankle side.