평행봉 Basket with 1/2turn to handstand 기술동작의 운동학적 분석

Abstract

The purpose of this study was to examine the traits of the main skills and gymnasts by the 3D analysis of basket with 1/2turn to handstand skill movement and to provide national athletes with practical information. The participants were five members of the Korean gymnastic national team, and the main analysis factors were kinematical factors, such as the duration depending on each event, speed, angular velocity, and joint angular changes. The results are as follows. First, the mean performance time was 1.89 sec, and the mean time at the down swing phase was 0.47sec. Moreover, it was relatively effective to boost physical speed as a result of fast time and speed at the down swing phase. Second, at the moment when a gymnastic picked and rotated backward, the distance between cog and wrist joint was -16～-24.7 ㎝. At the peak of airborne, the distance between parallel bars and cog. was average 20.4 ㎝. The fastest speed of cog. was, when hands were released from a bar, 3.85～3.44 ㎧, and the mean vertical velocity was 3.59㎧. At E2 phrase, the picked angle of hip joint was 23.6°～40.5°, and the angular velocity of hip joint was average -0.124 rad/s shown before and after E2 phrase. At S1 phrase, the picked angle of hip joint was corresponded to E3 phrase. Moreover, at E2 phrase when hip joint flexed, shoulder joint angle was 78.7°～95.2° It was a big difference among the participants that the participants' shoulder joint angles were 50.1～88.7° and was indicated that their arms were not stretched enough when shoulder joint angles were limited. Finally, the shoulder joint angles during E5 to E7 phrases were likely relative to the shoulder joint angle of E5 phrase.