The purpose of the study was to investigate the effects of ankle angular position and standing surface type on static upright balance. Ten young adults stood on a force platform or on a firm wedge that induced 15° of either dorsiflexion or plantarflexion. In addition, a piece of foam was placed on top of the force platform and on the wedge. The center of pressure distance and velocity in the anteroposterior and mediolateral directions were calculated. Significantly larger magnitudes in most of the investigated variables were seen while standing with ankles in the dorsiflexion when compared with standing with the ankle joints in a natural position (p < .05). Plantarflexion increased the center of pressure anteroposterior velocity by 87% when compared with a natural stance (p < .05). Standing on the foam surfaces resulted in increases in all of the center of pressure measures by an average of 38% in all of the ankle conditions.

中文翻译：

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踝关节角位置和站立表面对直立姿势姿势控制的影响。

该研究的目的是研究踝关节角位置和站立表面类型对静态直立平衡的影响。十个年轻人站在受力平台或牢固的楔形物上，导致背屈或plant屈15度。另外，在力平台的顶部和楔块上放置了一块泡沫。计算前后前后方向的压力距离和速度中心。与自然位置下的踝关节站立时相比，在踝关节的背屈站立时，在大多数研究变量中观察到的幅度明显更大（p <.05）。与自然姿势相比，屈可使压力前后速度中心增加87％（p <.05）。