Background

Previous research showed that standing on textured surfaces can improve postural control by adapting somatosensory inputs from the plantar foot. The additional stimulation of plantar cutaneous mechanoreceptors by a textured surface during single-leg stance on a balance board may increase afferent information to the central nervous system to accelerate muscular responses and to enhance their accuracy. The additional impact of textured surface during single-leg stance on a balance board on postural control and muscle activity is unknown.

Research question

To investigate the differences of a) postural control during single-leg stance on a textured balance board compared to a smooth balance board and b) activity of lower extremity muscles during single-leg stance on a textured balance board compared to a smooth balance board and the floor.

Methods

Twenty-six healthy adults (12 females, 14 males; mean age = 25.4 years) were asked to balance on their randomly assigned left or right leg on a force plate (floor; stable condition), a textured balance board and a smooth balance board (unstable conditions). Center of pressure (CoP) displacements (force plate, Bertec, 1000 Hz) and electromyographic activity (EMG) of eight leg muscles were measured and compared between conditions, respectively.

Results

Neither CoP-displacements, nor EMG activities differed significantly between the textured and the smooth balance board (p > 0.05). Significantly higher muscle activities (p < 0.05) were observed using the balance boards compared to the floor.

Significance

Single-leg stance using a textured balance board seems not to lead to reduced CoP-displacements compared to a smooth balance board. Muscle activation is significantly increased in both balance board conditions compared to the floor, however, it is not different when both balance board surfaces are compared. It could not be recommended to use a textured balance board for altering muscle activity and improving postural control during single-leg stance in favor of a smooth textured balance board.

中文翻译：

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与平滑的平衡板和地板相比，使用纹理化的平衡板对单腿姿势进行生物力学分析：一项横断面研究

背景

先前的研究表明，站在带纹理的表面上可以通过适应来自足底的体感输入来改善姿势控制。在平衡板上单腿姿势期间，纹理表面对足底皮肤机械感受器的额外刺激可能会增加对中枢神经系统的传入信息，从而加快肌肉反应并提高其准确性。单腿姿势在平衡板上对姿势控制和肌肉活动的其他影响尚不清楚。

研究问题

研究a）在带纹理的平衡板上的单腿姿势与平滑平衡板相比的姿势控制和b）在带纹理的平衡板上的单腿姿势与平滑平衡板相比的下肢肌肉活动和地上。

方法

26名健康成年人（12名女性，14名男性；平均年龄= 25.4岁）被要求在测力板（地板；状况稳定），纹理平衡板和光滑平衡板上随机分配的左右腿平衡（不稳定的条件）。测量并比较了八种腿部肌肉的压力中心（CoP）位移（力板，Bertec，1000 Hz）和肌电图活动（EMG）。

结果

有纹理的和光滑的平衡板之间的CoP位移和EMG活性均无显着差异（p> 0.05）。与地板相比，使用平衡板观察到的肌肉活动明显更高（p <0.05）。

意义

与光滑的平衡板相比，使用带纹理的平衡板的单腿姿势似乎不会减少CoP位移。与地板相比，两种平衡板条件下的肌肉激活都显着增加，但是，将两个平衡板表面进行比较时，肌肉的激活情况并无不同。不建议使用纹理平衡板来改变肌肉活动并改善单腿姿势时的姿势控制，而建议使用光滑的纹理平衡板。