A9 股関節中心の推定位置の違いがインステップキック動作中の三次元股関節モーメントに与える影響について(サッカー)

概要

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The purpose of this study was to investigate the influence of estimation method of hip joint center(HJC) location on the three-dimensional hip joint moment during instep kicking motion. Twelve skilled soccer players participated in the experiment. Firstly, they were instructed to do ad hoc movements including hip flexion/extension and adduction/abduction movements performed on several planes in different orientations, followed by a circumduction movement. Then, subjects performed there maximal instep kick, which were recorded using morion capture system at 250Hz. HJC location were estimated by three different methods, the first and the second utilized the empilical relation between HJC location and the palpable bony landmarks, and the third was called functional method, which tried to fit spheres which had their center at the HJC to the trajectories of markers attached on the thigh during the calibration trial. We computed the hip adduction/abduction, flexion/extension, internal/external rotation moment from right toe-off to the ball impact based on three different HJC location estimates, and compared the peak value and timing among three methods. The results showed diffence in estimation methods had influence mainly on the peak and its timing of add/abd and int/ext moment after MHE.
社団法人日本機械学会の論文
2008-11-05