The purpose of this study was to compare kinematic factors between two groups for Cross jump in balance beam. Six national female gymnasts participated in this study, and four digital cameras were used to capture motions for three dimensional analysis. The results were as follows: First, in the performance time, both groups showed a similar duration, but the support time of the skilled group was shorter than the less skilled group in P1, while the duration of a flight of the skilled group was longer than the less skilled group in P2 and P3. Second, the medial and lateral displacement of COG showed a similar change during a whole motion, but the less skilled group showed a posture that the COG translated to the support leg direction in landing phase of the P5. The horizontal distance of the skilled group was longer than the less skilled group in P2. And the takeoff and apex position of the skilled group showed higher than the less skilled group in the vertical displacement generally. Third, the horizontal velocity of the skilled group showed faster velocity than the less skilled group in takeoff of the support leg(E2) and landing(P5). And the vertical velocity of the skilled group showed faster upward and downward velocity than the less skilled group on the whole. Fourth, because the skilled group showed a posture that the knee and hip joint extended, the height COG of the skilled group was high and showed an effective cross motion in the flight phase of P3, P4 and a landing motion in landing phase of P5.
목차
I. 서론 II. 연구 방법 1. 연구 대상 2. 실험 장비 3. 실험절차 4. 자료 처리 5. 용어의 정의 III. 결과 및 논의 1. 소요 시간 2. 위치 요인 3. 속도 요인 4. 각도 요인 IV. 결론 및 제언 1. 결론 참고문헌 ABSTRACT
현대사회에 있어서 신체활동 연구의 주요 탐구과제는 ‘신체활동을 통한 교육’으로부터 ‘인간의 기본적인 움직임’을 목표로 하는 스포츠적인 움직임을 중심으로 한 생명 활동의 개념으로 급속히 변화되고 있는 추세이다. 이러한 환경변화에 대응하기 위하여 본학회는 ‘체육’적인 요소에서 ‘스포츠’적인 요소를 중심으로 한 학문적 정체성을 견고히 하고, 정기적인 학술지 발간과 학술활동을 통해 한국스포츠츠 문화의 발전과 학문적인 발전에 기여하는데 그 목적이 있다.