지면 반발계수가 착지 시 수직지면반력, 관절 각속도 및근 활성도에 미치는 영향
The effect of surface coefficient of restitution on vertical ground reaction force, joint angular velocity and muscle activity during landing
The purpose of this study was to investigate the effect of surface coefficient of restitution on vertical ground reaction force, joint angular velocity and muscle activity during landing with ankle, knee and hip joint angle limitation. 10 men were recruited as a subjects but only one person was excluded due to personal reason therefore a total of 9 men participated in this measurement. The participants were performed 30cm height drop landing on three different surface with randomized control and cross-over design. All subjects were performed four weeks drop landing to limit the joint angle during landing. Three-dimensional motion analysis equipment and surface EMG was used to measure ground reaction force, joint angles, joint angular velocity and muscle activity of lower limb. Collected data were statically analyzed by repeated one-way analysis of variance and alpha was set at .05. As a results, there were no significant difference between ground reaction force and joint angular velocity but there were significant difference in muscle activity and on wood had highest activity level than others. Based on the results of this study, further study needs to kinematic analysis and hormonal responses about a variety of surface coefficient and drop landing height followed by jump.
목차
Ⅰ. 서론 1. 연구의 필요성 2. 연구의 목적 Ⅱ. 연구방법 1. 연구대상 2. 측정방법 및 절차 3. 자료산출 방법 4. 통계 처리 Ⅲ. 결과 1. 수직지면반력의 변화 2. 관절 각속도의 변화 3. 근 활성도의 변화 Ⅳ. 논의 Ⅴ. 결론 참고문헌 ABSTRACT
키워드
LandingSurface coefficient of restitutionGround reaction forceJoint angular velocityMuscle activity
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.