태권도 돌려차기 시 중앙·전방형 겨룸새 형태에 따른 운동학적 변인 비교분석

Abstract

The purpose of this study is to provide the requisite materials for improvement of Gyeorugi coaching and skills by means of comparative analysis on how spin kick changes according to Gyeorumsai form. In order to do this research, whose subjects are 14 national-level male Taekwondo athletes, central body axis is divided into the central and frontal one and Chagi technique is divided into standing spin kick and two-feet back stepping one. For image analysis, seven Cameras set in 250Hz/sec were used to capture their movement and kinematics variables calculated by the collected Raw Date were analyzed. As the factors of analysis, the conducting time, the movement and speed of the body centroid, speed of each segment, it gained the following results. First, with regard to the total consuming time for the kick, the frontal standing position wasfaster than the central one, and at the movement. Second, about the moving distance of the body centroid, the frontal standing position moved more to the object than the central one did. In terms of the speed of the body centroid, the frontal standing position was faster than the central one, and at the movement, it was found that the central type was speedier than the frontal one. Third, the foot segment indicated no great change in its speed between two Gyeorumsai forms except for thai.