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首页> 外文期刊>Journal of Neurophysiology >Vibration-induced postural posteffects.
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Vibration-induced postural posteffects.

机译:振动引起的姿势后效应。

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摘要

It generally is known that vibration of various muscles in free-standing subjects evokes a spatially oriented postural response. Furthermore, it recently has been shown that when a vibratory stimulus is terminated, a powerful involuntary contraction of the previously vibrated muscle often occurs that, under the isotonic condition, is accompanied by movement of a limb. The aim of this study was to explore effects of a low-amplitude mechanical vibration, applied in a seated position, on the standing posture. The 30-s vibration was applied bilaterally at the ankle level to anterior or posterior tendons and at the cervical level in front or back of the neck, at one site only at a time. Center of pressure trajectories were monitored during quiet stance for
机译:众所周知,在独立受试者中各种肌肉的振动会引起空间定向的姿势反应。此外,最近已经显示,当振动刺激终止时,在等渗条件下伴随肢体运动的情况下,经常发生先前振动的肌肉的强力不自主收缩。这项研究的目的是探讨在坐姿时施加的低振幅机械振动对站立姿势的影响。仅在一个位置一次在踝关节水平向两侧的前或后肌腱以及颈部水平在颈前或后侧施加30秒钟的振动。在振动抵消后的安静姿态下,在≥19分钟的时间内监测压力轨迹的中心,并将这些测量结果与振动控制试验进行了比较。结果清楚地表明,所有受试者产生的振动主要在前后方向上强烈,持久地动态改变了姿势。姿势引起的振动后移动的空间取向取决于振动侧。我们得出的结论是,由振动引起的持续的Ia感官流入对姿势系统的运动系统具有强大的后效应。

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