Three-dimensional kinetic analysis of side-foot and instep soccer kicks
Three-dimensional kinetic analysis of side-foot and instep soccer kicks
复制标题
DOI：
10.1097/00005768-200212000-00025
复制
发表时间：
2002-12-01
期刊：
影响因子：
--
通讯作者：
Sakurai, S
中科院分区：
文献类型：
--
作者：
Nunome, H;Asai, T;Sakurai, S
目的：本研究的目的是识别侧足和脚背踢足球的动力学方面，以了解两种踢法背后的不同力学。方法：采用三维摄影技术捕捉两脚的运动。将踢腿建模为由大腿、小腿和足组成的三连杆运动链，由此计算关节力矩和角速度。结果：侧足踢球速度（23.4 +/- 1.7 m.s(-1)）明显慢于脚背踢球速度（28.0 +/- 2.1 m.s(-1)）。两种踢法在髋部外旋扭矩（侧足踢法为56 +/- 12 N.m，脚背踢法为33 +/- 8 N.m）和髋部外旋角速度（侧足踢法为11.1 +/- 2.4 rad.s(-1)）方面也存在显著差异；6.0 +/- 2.0 rad.s（-1）在脚背踢)。结论：这些结果表明，要用脚内侧击球，需要一系列复杂的旋转运动来进行侧脚踢。髋外旋力矩主要表现在侧足踢腿中，导致腿腿平面在踢腿后期发生顺时针旋转。这可能允许髋关节外旋运动直接增加侧脚的向前速度，这样球员就可以直接撞击球。
Purpose: The purpose of this study was to identify the kinetic aspects of side-foot and instep soccer kicks to understand the different mechanics underlying the two kicks. Methods: The motions of both kicks were captured using a three-dimensional cinematographic technique. The kicking leg was modeled as a three-link kinetic chain composed of thigh, shank, and foot, from which joint torques and angular velocities were computed. Results: The ball velocity of the side-foot kick (23.4 +/- 1.7 m.s(-1)) was significantly slower than that of the instep kick (28.0 +/- 2.1 m.s(-1)). Significant differences were also observed between the two kicks for the magnitude of hip external rotation torque (56 +/- 12 N.m in the side-foot kick; 33 +/- 8 N.m in the instep kick) and hip external rotation angular velocity (11.1 +/- 2.4 rad.s(-1) in the side-foot kick; 6.0 +/- 2.0 rad.s(-1) in the instep kick). Conclusion: These results indicated that to hit the ball with the medial side of the foot, a complicated series of rotational motions are required for the side-foot kick. The hip external rotation torque dominantly exhibited in the side-foot kick caused the clockwise rotation of the thigh-shank plane at the later stage of kicking. This may allow the hip external rotation motion to increase directly the forward velocity of the side foot, with which players can squarely impact the ball.