Standing on wedges modifies side-specific postural control in the presence of lateral external perturbations
Standing on wedges modifies side-specific postural control in the presence of lateral external perturbations
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DOI：
10.1016/j.jelekin.2017.06.005
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发表时间：
2017-10-01
影响因子：
2.5
通讯作者：
Aruin, Alexander S.
中科院分区：
文献类型：
--
作者：
Lee, Yun-Ju;Liang, Jing-Nong;Aruin, Alexander S.
站在楔子上会改变踝关节的位置，并影响内外向的姿势稳定性。本研究的目的是调查楔和外部横向扰动的作用，预期（阿帕）和补偿姿势调整（CPA）。10名健康的年轻参与者暴露于扰动施加到他们的右肩的外侧部分时，站在一个平面上，在内侧或外侧楔形。记录并分析阿帕和CPA时相双侧背腹姿势肌的肌电活动和压力中心（COP）位移。当暴露于侧向扰动时，在阿帕和CPA阶段，在扰动侧看到小腿肌肉的相互激活，而在对侧看到小腿肌肉的共同收缩。站在一个楔子与小腿肌肉的共同收缩和相互激活的幅度减少。COP位移较小的阿帕阶段和较大的CPA阶段，而站在楔相比，站在平面上。这项研究的结果提供了一个基础，为未来的调查，将楔子的平衡再训练范式为老年人或个人与神经功能障碍。(C)2017爱思唯尔有限公司版权所有。
Standing on wedges changes the position in the ankle joints and affects postural stability in the mediallateral direction. The objective of the study was to investigate the role of wedges and external lateral perturbations on anticipatory (APA) and compensatory postural adjustments (CPA). Ten healthy young participants were exposed to perturbations applied to the lateral part of their right shoulder when standing on a planar surface, on a medial or lateral wedges. Bilateral electromyographic activity of dorsal and ventral postural muscles and the center of pressure (COP) displacement were recorded and analyzed during the APA and CPA phases. When exposed to the lateral perturbation, reciprocal activation of shank muscles was seen on the side of the perturbation while co-contraction of shank muscles was seen on the contralateral side during the APA and CPA phases. Standing on a wedge was associated with decreased magnitudes of co-contraction and reciprocal activation of shank muscles. The COP displacements were smaller in the APA phase and larger in the CPA phase while standing on wedges compared to standing on the planar surface. The outcome of the study provides a basis for future investigations of incorporating wedges in balance re-training paradigms for the elderly or individuals with neurological impairment. (C) 2017 Elsevier Ltd. All rights reserved.