A39 水中ドルフィンキックにおける体幹のうねりがパフォーマンスに及ぼす影響のシミュレーション解析(ウォータースポーツ)

概要

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The objectives of this study were to investigate the effect of trunk undulation on the swimming performance in underwater dolphin kick, and to clarify the ideal trunk undulation form. The reference swimming motion of an elite swimmer was firstly acquired from the video analysis, and input into the swimming human simulation model SWUM, which have been developed by the authors. The trunk motion was next optimized by the simulation for two objective functions: maximizing swimming speed and maximizing propulsive efficiency. The following findings were obtained: The swimming motion of maximizing propulsive efficiency and the reference swimming are considerably similar to each other. In both cases, the trunk moves as a seesaw with a node; whereas, the lower limbs form a traveling wave in the absolute space. The trunk undulation with the appropriate amplitudes and phases, especially bending at the chest, is important in realizing the swimming motion which maximizes propulsive efficiency.
社団法人日本機械学会の論文
2008-11-05