Electromyographic responses of erector spinae and lower limb's muscles to dynamic postural perturbations in patients with adolescent idiopathic scoliosis
Electromyographic responses of erector spinae and lower limb's muscles to dynamic postural perturbations in patients with adolescent idiopathic scoliosis
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DOI：
10.1016/j.jelekin.2014.05.014
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发表时间：
2014-10-01
影响因子：
2.5
通讯作者：
Saba, Mohammad Sadegh
中科院分区：
文献类型：
--
作者：
Farahpour, Nader;Ghasemi, Safoura;Saba, Mohammad Sadegh
本研究的目的是评估青少年特发性脊柱侧凸（AIS）患者和健康对照组的竖脊肌（ES）和下肢肌肉对动态向前姿势扰动（FPP）和向后姿势扰动（BPP）的肌电图（EMG）反应。研究了10名右胸AIS患者（Cobb = 21.6 +/- 4.4度）和10名对照青少年。采用双极表面电极，检测FPP和BPP时左右两侧T10（EST 10）和L3（ESL 3）水平ES肌、股二头肌（BF）、腓肠肌外侧（G）和股直肌（RF）的肌电活动。在扰动开始后的1 s时间窗内测量肌肉反应。在FPP测试中，脊柱侧凸组右侧EST 10、ESL 3和BF肌的EMG反应分别是对照组的1.40（p = 0.035）、1.43（p = 0.07）和1.45（p = 0.01）倍。此外，在BPP测试中，在脊柱侧凸组的右侧ESL 3肌肉处，EMG活性是对照组的1.64倍（p = 0.01）。脊柱侧凸组在FPP期间EST 10和BF肌肉的肌肉反应不对称。这种对FPP的不对称肌肉活动被假设为一种可能的补偿策略，而不是脊柱侧凸的固有特征。(C)2014爱思唯尔有限公司版权所有。
The aim of this study was to evaluate electromyographic (EMG) responses of erector spinae (ES) and lower limbs' muscles to dynamic forward postural perturbation (FPP) and backward postural perturbation (BPP) in patients with adolescent idiopathic scoliosis (AIS) and in a healthy control group. Ten right thoracic AIS patients (Cobb = 21.6 +/- 4.4 degrees) and 10 control adolescents were studied. Using bipolar surface electrodes, EMG activities of ES muscle at T10 (EST10) and L3 (ESL3) levels, biceps femoris (BF), gastrocnemius lateralis (G) and rectus femoris (RF) muscles in the right and the left sides during FPP and BPP were evaluated. Muscle responses were measured over a 1s time window after the onset of perturbation. In FPP test, the EMG responses of right EST10, ESL3 and BF muscles in the scoliosis group were respectively about 1.40 (p = 0.035), 1.43 (p = 0.07) and 1.45 (p = 0.01) times greater than those in control group. Also, in BPP test, at right ESL3 muscle of the scoliosis group the EMG activity was 1.64 times higher than that in the control group (p = 0.01). The scoliosis group during FPP displayed asymmetrical muscle responses in EST10 and BF muscles. This asymmetrical muscle activity in response to FPP is hypothesized to be a possible compensatory strategy rather than an inherent characteristic of scoliosis. (C) 2014 Elsevier Ltd. All rights reserved.