마루운동 도움짚기 - 손짚고 뒤돌기 동작의 지면반력에 대한 운동역학적 분석

The subjects of this study are 5 male gymnastics player of the Ground Reaction Force(GRF) for study analyzed round - off flic - flac of floor exercise. A primary factor landing phase of GRF. supporting time. impact force is movement in round - off flic - flac of floor exercice. The conclusion of this study are as follow. 1. The result average of this study showed that the vertical supporting time is first maximum impact 0.017sec, second maximum impact 0.049sec, horizontal supporting time is first maximum impact 0.019sec, second maximum impact 0.054sec round - off flic - flac is floor exercice. showed fast subject D2 and C1 supporting time is short as impact force is high be closely connected between with supporting time is short as impact force is high be closely connected between with supporting time and impact force. 2. Landing motion shoewd that the maximum vertical impact force is 5454.79N that the oneself weight of about 90.BW. on the whole vertical impact force is 2666.78N that the oneself weight of about 4.37BW. 3. Pattern to shoewd that the GRF is vertical direction of passed by first impact phase low a vertex make it a zoom chandelle high level a vertex after deline be slowness reduction to round - off flic - flac of floor exercice. Pattern to shoewd that the GRF is horizontal direction from the braking force period to propulsive direction process landing motion.