Kawamoto Ryuji, Miyagi Osamu, Ohashi Jiro, Fukashiro Senshi
Department of Sports Science, Daito Bunka University, Saitama, Japan.
Sports Biomech. 2007 May;6(2):187-98. doi: 10.1080/14763140701324966.
The aim of this study was to identify critical kinetic variables that lead to increased ball velocity during a side-foot passing kick in soccer. Seven experienced male soccer players and eight inexperienced players participated in the experiment. They were instructed to perform side-foot kicks along the ground with maximum effort with an eye on the target line. The joint angles, angular velocities, and torques of the kicking leg were determined based on the three-dimensional kinematic data. The mean ball speed of the experienced group (21.4 +/- 1.5 m/s) was significantly faster than that of the inexperienced group (16.0 +/- 1.0m/s; P < 0.001). The motions of the inexperienced players tended to be less dynamic than those of the experienced players. The most noticeable difference in the kinetics of the kick was found in the hip flexion torque throughout the back-swing phase until the leg-cocking phase. The mean peak value of the experienced group (168 +/- 20 N x or m) was significantly greater than that of the inexperienced group (94 +/- 17 N x or m; P < 0.001). To increase ball speed during a side-foot passing kick, the generation of hip-flexion torque during the earlier stage of kicking is critical.
本研究的目的是确定在足球侧足传球踢过程中导致球速增加的关键动力学变量。七名经验丰富的男性足球运动员和八名经验不足的运动员参与了该实验。他们被要求沿着地面尽全力进行侧足踢，并注视目标线。基于三维运动学数据确定了踢球腿的关节角度、角速度和扭矩。经验丰富组的平均球速（21.4 +/- 1.5米/秒）显著快于经验不足组（16.0 +/- 1.0米/秒；P < 0.001）。经验不足的球员的动作往往不如经验丰富的球员那样有力。在整个后摆阶段直至腿部预摆阶段，踢腿动力学中最显著的差异出现在髋部屈曲扭矩上。经验丰富组的平均峰值（168 +/- 20牛·米）显著高于经验不足组（94 +/- 17牛·米；P < 0.001）。为了在侧足传球踢时提高球速，在踢球早期产生髋部屈曲扭矩至关重要。
