著者

藤谷 光順 桜井 伸二

出版者

日本アダプテッド体育・スポーツ学会

雑誌

障害者スポーツ科学 (ISSN:13486055)

巻号頁・発行日

vol.12, no.1, pp.33-42, 2014

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The purpose of this study was to report the supporting approach for the improvement of the athletic performance of a Paralympic swimmer. The subject was a gold medalist in the 50 m breast stroke event in the 2008 Beijing Paralympic Games, and was classified in SB3 according to a congenital limb deficit. Four synchronized under-water video cameras (60 fps and 1/1000s) were used to record the maximum 50 m breast stroke swimming motion. Three-dimensional coordinates of anatomical landmarks of the swimmer were obtained using DLT procedures. Filming and analysis were executed three times every two months. Video-imaged and motion analysis results were relayed back to the athlete and coach every time. Suggestions for the athletic performance improvement derived from the motion analysis were as follows: (1) increase stroke length and decrease stroke rate, (2) conform stroke motion in non-breath stroke to the motion in on-breath stroke, and (3) decrease drag force in recovery phase, and shorten stroke length of right arm in late in-sweep phase. The filming and supporting activities based on data acquisition and analysis were continued to the 2012 London Paralympic Games for improving the athletic performance so as to achieve the best results for athletes.