트레드밀 운동시 속도와 경사도에 따른 운동 역학적 변인의 특성 비교

The kinematic and kinetic analysis of treadmill gait with various indination and speed

The purpose of this study is to define the mechanism by comparison analysis of mechanic movement by the inclination and the speed of the treadmill gait(walking and running) and to offer the basic data for the decision of the speed and the inclination to avoid injury. The selected subjects of this study were ten female college students, who had normal foot and no experience of the lower extremity injury. We used treadmill that set with forceplatform and Vicon 370 system for the three dimensional analysis. The treadmill speed was 1.25m/s for walking and 2m/s, 2.5m/s, 3m/s for running. The inclination were level(0%), up 5%, 10%, the speed and the order of the inclination selected random. We analyzed the walking value by the inclination and the speed and the angle of lower extremity, the vertical reaction force during the treadmill gait (walking and running). As follows are the result of the analysis, 1. The variation pattern of the inclination on treadmill has no effects during running(2/ms/, 2.5m/s, 3m/s), but change the movement pattern of lower extremity’s on sagittal plane during walking(1.25m/s). 2. The difference by speed on the angle variation pattern of the lower extremity appear between walking(1.25m/s) and running(2m/s, 2.5m/s, 3m/s), and has effects on movement pattern of lower extremity’s coronal plane and transverse plane. 3. The changing of the inclination to 5%, the DRM(dynamic range of motion) of the pelvic and ankle’s on sagittal plane is increased but the case of the 10% the DRM(dynamic range of motion) of the knee’s on sagittal plane and that of the pelvic’s on transverse plane is increased. 4. The DRM(dynamic range of motion) by the speed in stance phase has no difference each running speed(2m/s, 2.5m/s, 3m/s), but differ with walling(1.25m/s) at pelvic tilt; pelvic rotation, hip rotation, knee flex/extension, knee rotation, foot dorsi/plantarflexion. So the DRM(dynamic range of motion) of most lower extremity in stance phase when it running is wider than walking, but has no difference each speed of running.