Institute of Health Science, Yonsei University, Wonju, Republic of Korea.
J Electromyogr Kinesiol. 2013 Apr;23(2):387-93. doi: 10.1016/j.jelekin.2012.11.010. Epub 2013 Jan 5.
The present study was performed to examine lumbopelvic rotation and to identify asymmetry of the erector spinae and hamstring muscles in people with and without low back pain (LBP). The control group included 16 healthy subjects, the lumbar-flexion-rotation syndrome LBP group included 17 subjects, and the lumbar-extension-rotation syndrome LBP group included 14 subjects. Kinematic parameters were recorded using a 3D motion-capture system, and electromyography parameters were measured using a Noraxon TeleMyo 2400T. The two LBP subgroups showed significantly more lumbopelvic rotation during trunk flexion in standing than did the control group. The muscle activity and flexion-relaxation ratio asymmetries of the erector spinae muscles in the lumbar-flexion-rotation syndrome LBP group were significantly greater than those in the control group, and the muscle activity and flexion-relaxation ratio asymmetry of the hamstring muscles in the lumbar-extension-rotation syndrome LBP group were significantly greater than those in the control group. Imbalance or asymmetry of passive tissue could lead to asymmetry of muscular activation. Muscle imbalance can cause asymmetrical alignment or movements such as unexpected rotation. The results showed a greater increase in lumbopelvic rotation during trunk flexion in standing among the lumbar-flexion-rotation syndrome and lumbar-extension-rotation syndrome LBP groups compared with the control group. The differences between the two LBP subgroups may be a result of imbalance and asymmetry in erector spinae and hamstring muscle properties.
本研究旨在检查腰骶旋转,并确定腰痛(LBP)患者和无腰痛患者竖脊肌和腘绳肌的不对称性。对照组包括 16 名健康受试者,腰椎前屈-旋转综合征 LBP 组包括 17 名受试者,腰椎伸展-旋转综合征 LBP 组包括 14 名受试者。运动学参数使用 3D 运动捕捉系统记录,肌电图参数使用 Noraxon TeleMyo 2400T 测量。与对照组相比,两个 LBP 亚组在站立位时躯干前屈时显示出明显更多的腰骶旋转。腰椎前屈-旋转综合征 LBP 组的竖脊肌肌肉活动和屈伸比不对称性明显大于对照组,腰椎伸展-旋转综合征 LBP 组的腘绳肌肌肉活动和屈伸比不对称性明显大于对照组。被动组织的不平衡或不对称可能导致肌肉激活的不对称。肌肉失衡会导致不对称的排列或运动,如意外旋转。结果显示,与对照组相比,腰椎前屈-旋转综合征和腰椎伸展-旋转综合征 LBP 组在站立位时躯干前屈时腰骶旋转增加幅度更大。两个 LBP 亚组之间的差异可能是竖脊肌和腘绳肌特性失衡和不对称的结果。
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