下坡行走遇滑步态失稳自适应平衡反应研究

Because of the complexity of gait slip phenomenon, it is rather rare that the study about human body adaptive balance reaction during slip event on ramp walk. This research explores the potential adaptive balance reaction of human lower limb by plantar pressure analysis and gait analysis method for the gait instability phenomenon in the process of slip disturbance on downhill walk. Ten healthy male subjects walk on three different slope downhill (i1 = 0, i2 = 1:12, i3 = 1:10) wearing shoes with two contrastive contaminants (dry, oil). The study collects and analyzes the change rule of spatiotemporal parameters, plantar pressure parameters and kinetic parameters. The results show that the adaptive balance reaction of different slope downhill walking during slip disturbance exist obvious difference. In terms of the overall parameters, the adjustment reaction is consistent when the downhill slope is i2=1:12 and i3=1:10. For individual parameter, there are some differences in the adjustment reaction between the downhill slope i1and i2=1:12, i3=1:10.There are obvious adjustment reaction at initial contact time, loading response phase and preswing phase, which is importance of adaptive adjustment period.