Liao Lin-Rong, Pang Marco Yiu Chung
1Department of Rehabilitation, Jiangsu Provincial Yixing Jiuru Rehabilitation Hospital, Yixing, China; and 2Department of Rehabilitation Sciences, Hong Kong Polytechnic University, Hong Kong, China.
J Strength Cond Res. 2017 Jul;31(7):1954-1962. doi: 10.1519/JSC.0000000000001761.
Liao, L-R, and Pang, MYC. Effect of whole-body vibration on neuromuscular activation of leg muscles during dynamic exercises in individuals with stroke. J Strength Cond Res 31(7): 1954-1962, 2017-This study examined the leg muscle activity during exposure to different whole-body vibration (WBV) intensities while performing various dynamic exercises in patients with chronic stroke. Thirty patients with chronic stroke performed a series of dynamic exercises under 3 conditions: (a) low-intensity WBV (peak acceleration: 0.96 units of gravity of Earth [g]), (b) high-intensity WBV (1.61 g), and (c) no WBV. Neuromuscular activation was recorded with surface electromyography (EMG) on bilateral biceps femoris (BF), vastus lateralis, tibialis anterior (TA), and gastrocnemius (GS) in both legs and was reported as EMGrms (root mean square) normalized to % maximal voluntary contraction. The EMG amplitude of all tested muscles was significantly increased by adding WBV during dynamic exercise (p ≤ 0.05). The EMG amplitude of BF, TA, and GS during exposure to high-intensity WBV was significantly greater than low-intensity WBV (p ≤ 0.05). The increase in EMG amplitude caused by WBV was exercise dependent in GS and TA (p ≤ 0.05). The EMG response to WBV in GS and BF in the affected leg was significantly greater than the corresponding muscles in the unaffected leg (p ≤ 0.05). The extent of WBV-induced muscle activity was dependent on the dynamic exercise, WBV intensity, and muscle trained among patients with chronic stroke.
廖，L-R，庞，MYC。全身振动对中风患者动态运动期间腿部肌肉神经肌肉激活的影响。《力量与体能研究杂志》31(7): 1954 - 1962，2017年——本研究在慢性中风患者进行各种动态运动时，考察了暴露于不同全身振动（WBV）强度下的腿部肌肉活动。30名慢性中风患者在3种条件下进行了一系列动态运动：（a）低强度WBV（峰值加速度：0.96个地球重力单位[g]），（b）高强度WBV（1.61 g），以及（c）无WBV。通过表面肌电图（EMG）记录双腿双侧股二头肌（BF）、股外侧肌、胫前肌（TA）和腓肠肌（GS）的神经肌肉激活情况，并以归一化至最大自主收缩百分比的均方根肌电图（EMGrms）进行报告。在动态运动期间添加WBV显著增加了所有测试肌肉的肌电图幅度（p≤0.05）。暴露于高强度WBV期间，BF、TA和GS的肌电图幅度显著大于低强度WBV（p≤0.05）。WBV引起的肌电图幅度增加在GS和TA中与运动相关（p≤0.05）。患侧腿的GS和BF对WBV的肌电图反应显著大于未患侧相应肌肉（p≤0.05）。在慢性中风患者中，WBV诱导的肌肉活动程度取决于动态运动、WBV强度和所训练的肌肉。
