Football Codes

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The purpose of this study was to describe kinematic variables that can distinguish between successful (straight to the goal) and failed (over the goal) soccer volley kicking. To mimic the situation of the volley kicking, the ball was set on a paper pipe. The kicking motions of both successful and failed trials were captured from ten male university soccer players using an optical motion capture system at 500 Hz. As a result, foot–ball impact points on the ball in failed trials were concentrated around the bottom part of the ball, and the kicking motion in failed trials were characterized as: 1) smaller hip internal rotation during the back-swing, 2) more upright foot posture at ball impact and 3) more downward leg swing just before ball impact. Furthermore, it was suggested that there were several patterns of failed trials depending on the subjects.