택견 두름치기와 태권도 얼굴앞돌려차기의 생체역학적 비교

Abstract

This study is to clarify similarities and differences between Dureumchiki at Taekkyon and Front-turing kick at Taekwondo by comparing kinematic variables of positions, kinetic variables of force components applied on the ground. For this, four subjects majoring in Taekwondo and another four specializing in Taekkyon were selected. Two force-plates (3,000Hz/s) and seven real-time infrared cameras (250Hz/s) were used. From these the following conclusions have been drawn after the analysis of the kinetic factors. At the take-off of the kicking leg from the ground, it took longer for Dureumchiki than for front-turning kick at Taekwondo due to the features of Gumsil Motion (springing up and down by bending and stretching knees) and kicks at Taekkyon which make opponents lose their balances by pushing. Furthermore the former showed larger displacement of the COG of the body at take-off position. Regarding the change to the movement of COG, the posture with low COG was seen at Taekkyon but the feature of big horizontal movements(y axis) from side to side(medial/lateral) was also observed. NJerk to foot segment and COG translation seen at bending-up situation of knees and stretching situation showed larger values at Taekkyon which have a significant difference from those at Taekwondo, which lead to the conclusion that the front-turing kick at Taekwondo had more efficiency than that of Taekkyon since the former come to have smaller change at the movements of segments and faster rotation-speed thanks to simpler movements than those at the latter. Kicking legs at both showed very similar force values, while the lateral force at Taekkyon was at work more than that at Taekwondo.