| Objective:The purpose of this study is to investigate the influence of downstairs speed on the pressure of knee joint. Method: Ten male college students were chosen as the subjects. They went downstairs in 48, 60, 72, 84, 96, 108 (steps/min) , slow running, moderate running, fast running separately. The peak force and angles of the knees were collected and analyzed. Result: With the increase of the downstairs speed, the vertical and horizontal peak force of the knee joints increased. The vertical peak force of the knee joints increased significantly with moderate speed running. The horizontal peak force of the knee joints increased obviously with slow running. The vertical peak force of the knee joints was more than the double weight with fast running. The peak force was no significant difference between the left and right knees when going downstairs with the same speed. With the increase of the downstairs speed, the peak flexion angles of the knee joints increased. Conclusion: With the increase of downstairs speed, the load and flexion range of the knee joint increase. The load of the right knee is greater than that of the left knee. |
