太极拳运动单脚支撑姿势持续时间与地面反作用力特征的分析

Analysis of the One-leg Stance Duration and the Ground Reaction Forces in Tai Chi

运用摄影测量法和Novel Pedar-X足底压力测试系统采集了16名太极拳练习者在太极拳运动和正常步行中足底压力和运动影像信息,并对两种运动方式的单脚支撑姿势持续时间指标进行对比分析。研究表明:与正常步行相比,在太极拳运动中单脚支撑姿势总的持续时间所占比例(标准化值)较少(P<0.05);单次单脚支撑姿势平均持续时间较长(P<0.01);认为太极拳运动可以提高人体单脚平衡能力。另外还发现太极拳运动和正常步行中地面反作用力都在不断变化;太极拳运动中地面反作用力小于其正常步行值。

Two digital video cameras and the Novel Pedar-X insole system was used to record the plantar forces and moving pictures of sixteen experienced Tai Chi practitioners during the execution of Tai Chi movements and during normal walking. The one-leg stance duration during the one-leg stance were compared. The result showed that the percentage（standardized value） of the total duration spent in the one-leg stance was less（p〈 0.05）, the duration of each one-leg stance was longer（p 〈0.01） in Tai Chi exercise then normal walking; Tai Chi exercise can improve the balance control during the one-leg stance, The ground reaction forces varied between the Tai Chi movements and normal walking, The ground reaction forces in Tai Chi are smaller then in normal walking.