The kinematics and EMG analysis of the lower limb in walking and running with different speeds and slopes

• Main Authors: Lin, Yi-Hsin, 林怡欣
• Other Authors: Shiang, Tzyy-Yuang
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/04233445946128674830

碩士 === 國立臺灣師範大學 === 運動科學研究所 === 99 === Purpose: This study was to compare the kinematics and EMG analysis of the lower limb in walking and running with different speeds (75%, 100%, 125% preferred transition speed) and slopes (10% downhill, level, 10% uphill). Methods: There are twelve male subjects recruited in this study. The experiment consisted of two parts. The first part was to determine the PTS on different slopes. The second part compared walking and running at these speeds on treadmill with different slopes using Vicon Motion System and four surface EMG. Using three way ANOVA, significant changes were identified at a p < 0.05 level. Results: The stride length, stride frequency and muscle activities were higher when walking with the increase in slope and speed. Walking on the high speed has the minima vertical displacements of body COM. Ankle joint and hip joint had larger joint range of motion on uphill but knee joint was on downhill. As the speed up, hip flexion and ankle extension were increased. Conclusion: Walking at higher speeds is safer and more efficient than running. Therefore, we can substitute or replace running by walking at higher speeds and coordinate with different slopes as a new training method on the treadmill.