スプリント走の着地期における下肢関節トルク

概要

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The purpose of this study was to investigate the torques around the hip, knee and ankle joints in sprint run. Four male sprinters were instructed to run at their maximal speed. Ground reaction force and the center of pressure were measured by using a platform (Kistler TYPE9281B) fitted on the course at 50 meters from the starting line. The motions were filmed with a high speed camera (Photo-Sonicsl6-1PL). A link segment modelling was used to compute torques around the hip, knee and ankle joints of the ground leg. The results obtained in this study were summarized as follows : At the former half of support phase, maximal hip extensor torque for the fastest sprinter was smaller than that for the other subjects. The hip extention angular velocity for the fastest sprinter was higher than that for the others, and the displacement of the center of gravity from touch down to mid-support position was shorter than that for the others. This might show that the fastest sprinter doesn't need to attempt action to minimize the brake at the former half of support phase. These result suggest that the concentric training of hip extention at the air phase may be necessary for improving sprint performance.
中京大学の論文
1993-09-20