리듬체조 Pivot 동작의 운동학적 분석

Abstract

This study was conducted with the purpose to supply to basic materials of research on rhythmic calisthenics and to more further understand difference in kinematic characteristics between A degree of difficulty, Double pivot passe motion and B degree of difficulty, Double pivot attitude, out of pivot motions, which is basic factors of rhythmic calisthenics. To analyze of the motions for 3D analysis, Four national rhythmic calisthenics representative athletes were selected. The results obtained from the study were as follow; 1. It was showed that the duration time of the Double pivot passe were more fast than Double pivot attitude resulting to the difference of the position of the knee joint approaching to the center of gravity. 2. In case that Double pivot passe and Double pivot attitude were performed, The right and left ranges of motion of the center of gravity showed that the first and second phases can get more the bigger rotational accelaration because the left knee joint was positioned by more upper position on its horizontal plane, but the more they has stable, the less range they were performed. 3. It was because of the stability of the center of the gravity caused by the bigger range of motion that the reason that the change of vertical position of the center of the gravity on the motion of Double pivot attitude were totally lower. 4. There were not significantly different between Double pivot passe and Double pivot attitude in case of the speed of the right hand. Therefore, It is expected to have more efficient performance when the motion of the Double pivot attitude were performed in the vertical, left, and right range of motion of the axes of the center of the gravity and made the point of the center of the gravity upper to accelarate whole body of the speed.