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- 저자 : 진성근(Sun Gun Jin) (검색결과 1 건)
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김헌수(Hun Soo Kim),진성근(Sun Gun Jin) 한국사회체육학회 2002 한국사회체육학회지 Vol.18 No.2
The purpose of this study was to analyze the kinetic factors of the flat service of the soft tennis by using the 2 force plates. The 4 male soft tennis backward players who have technique of the top class was participated in the subjects of the this study. The results were as following ; 1. In the case of anterior ground reaction forces, it was that a right and left foot were 47.7%, 14.3% before toss phase, 35.4%, 57.1% after toss phase, and forward swing phase 16.9%, 28.6% in respectively. In the case of posterior ground reaction forces, it was that a right and left foot were 51.1%, 10.0% before toss phase 41.5%, 50.0% after toss phase, and forward swing phase 7.4%, 40.0% in respectively. There were nothing change it for left foot. 2. In the case of lateral ground reaction forces, it was that a right and left foot were 20.8%, 37.5% before toss phase, 56.1%, 41.7% after toss phase, and forward swing phase 23.1%, 20.8% in respectively. In the case of medial ground reaction forces, it was that a right and left foot were 1.9%, 20.0% before toss phase, 75.0%, 60.0% after toss phase, and forward swing phase 23.1%, 20.0% in respectively. 3. In the case of vertical ground reaction forces, it was that a right and left foot were 86.4%, 13.6% before toss phase, 77.0%, 23.0% after toss phase, and forward swing phase 43.2%, 56.8% in respectively. Vertical ground reaction forces was larger than a horizontal and lateral ground reaction forces, and the change of the weight from rear foot to fore foot was moved rhythmically in general.
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