Standing position からの横方向への各種スタート動作についての力学的評価

概要

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The purpose of this study was to clarify the effectiveness of various starting method to sideward direction from standing position necessary for "Open Skill Sports" such as tennis and american football. Seven male "open skill sports" players were served as subjects in this study. They were asked to start from standing position to left direction as soon as a light signal in front of them turned on. The time from the signal to the goal which was 2 m apart from the starting position was measured. Four types of starting method were compared biomechanically, namely 1. Starting without any suggexrions nor directions. (Free Start : FS) 2. Starting with sideward thrust of the right leg to the starting direction (Side Thrust : ST) 3. Starting with changing step of a right leg in opposite direction to the start first (Kick Back : KB). 4. Starting with crossover of a right leg in front of the left leg. (Crossover : CO) The result obtained in this study were as follows. a) The fastest starting method was a CO in the mean value (and SD) at the measurement time 1.038s (±0.05), while there were three subjects whose fastest method was KB. b) In average KB indicated the fastest speed of the body center of gravity, and it was a CO to have indicated the slowest value. c) The forced in sideward direction was the largest for KB start, which could give favorable effect on the quick movement.
中京大学の論文
2005-05-18