Electromyographic analysis of upper limb muscles during standardized isotonic and isokinetic robotic exercise of spastic elbow in patients with stroke
Electromyographic analysis of upper limb muscles during standardized isotonic and isokinetic robotic exercise of spastic elbow in patients with stroke
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DOI：
10.1016/j.jelekin.2013.10.002
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发表时间：
2014-02-01
影响因子：
2.5
通讯作者：
Paik, Nam-Jong
中科院分区：
文献类型：
--
作者：
Sin, Minki;Kim, Won-Seok;Paik, Nam-Jong
虽然有报道说，加强运动对中风患者的运动恢复是有益的，但几乎没有证据表明哪种运动方法是更好的选择。本研究的目的是比较等张和等速运动的表面肌电图（EMG）分析使用标准化的methods.Nine中风患者进行了三套等张肘伸展在30%的最大自愿等长扭矩，其次是三套最大等速肘伸展与标准化的平均角速度和总工作量为每个匹配的两个加强模式。所有的练习都是通过使用1自由度规划机器人来调节精确的阻力矩和速度。记录了偏瘫肩、肘8块肌肉的表面肌电活动。采用标准化均方根（RMS）值和共收缩指数（CCI）进行分析，结果表明等速模式比等张模式更有效地激活肘关节伸展的激动剂（合并肱三头肌的标准化RMS：等速收缩96.0 ± 17.0（2nd），87.8 ± 14.4（3rd），等张收缩80.9 ± 11.0（2nd），81.6 ± 12.4（3rd），F[1，8] = 11.168; P = 0.010），而不增加肌肉对的共同收缩，涉及痉挛或协同作用。(C)2013爱思唯尔有限公司保留所有权利。
Although it has been reported that strengthening exercise in stroke patients is beneficial for their motor recovery, there is little evidence about which exercise method is the better option. The purpose of this study was to compare isotonic and isokinetic exercise by surface electromyography (EMG) analysis using standardized methods.Nine stroke patients performed three sets of isotonic elbow extensions at 30% of their maximal voluntary isometric torque followed by three sets of maximal isokinetic elbow extensions with standardization of mean angular velocity and the total amount of work for each matched set in two strengthening modes. All exercises were done by using 1-DoF planner robot to regulate exact resistive torque and speed. Surface electromyographic activity of eight muscles in the hemiplegic shoulder and elbow was recorded. Normalized root mean square (RMS) values and co-contraction index (CCI) were used for the analysis.The isokinetic mode was shown to activate the agonists of elbow extension more efficiently than the isotonic mode (normalized RMS for pooled triceps: 96.0 +/- 17.0 (2nd), 87.8 +/- 14.4 (3rd) in isokinetic, 80.9 +/- 11.0 (2nd), 81.6 +/- 12.4 (3rd) in isotonic contraction, F[1,8] = 11.168; P = 0.010) without increasing the co-contraction of muscle pairs, implicating spasticity or synergy. (C) 2013 Elsevier Ltd. All rights reserved.