垂直高度和水平距离对单腿落地过程中生物力学特征研究

Biomechanical Characteristics of Single Leg Landing with Vertical Height and Horizontal Distance

目的:研究垂直高度和水平距离对单腿下落过程中的地面反作用力峰值及其对应时间的影响。方法:采用三维测力台采集落地时垂直方向、前后方向和内外方向所受地面反作用力的峰值及其对应时间,使用重复测量方差分析对相关指标进行分析,检验水准为0.05。结果:垂直高度和水平距离对下落过程中GRF峰值均有显著性影响。结论:1)地面反作用力的峰值会随着垂直高度的增加而增大,并且垂直方向与向前方向上的地面反作用力的峰值会随着水平距离的加长而增大。2)着地时间基本上会随着垂直高度和水平距离的增加而变小。

Objective： To study the biomechanical characteristics of vertical height and horizontal distance in the process of single leg drop. Methods： the peak value and the corresponding time of ground reaction force in the vertical direction,the front and the back direction and the inside and outside direction were collected by three position force measuring platform. The test level was 0. 05. Results： there were significant differences between the vertical height and horizontal distance and the peak value of GRF in the process of falling. Conclusion： the vertical height and horizontal distance had significant influence on the peak value of GRF in the vertical direction. The height of the drop height had significant influence on the GRF peak time in the vertical direction and the front and rear direction,but there was no significant difference between the time and the height of the GRF peak in the internal and external direction.