Low back pain associates with altered activity of the cerebral cortex prior to arm movements that require postural adjustment.
Low back pain associates with altered activity of the cerebral cortex prior to arm movements that require postural adjustment.
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DOI：
10.1016/j.clinph.2009.11.076
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发表时间：
2010-03
期刊：
影响因子：
--
通讯作者：
Nagle KJ
中科院分区：
文献类型：
--
作者：
Jacobs JV;Henry SM;Nagle KJ
确定下背痛（LBP）是否与姿势稳定性的改变和伴随的皮质运动生理学变化有关。10名LBP参与者和10名没有LBP的参与者进行了自我发起，自愿手臂抬起。分析了相对于三角肌的双侧内斜肌和竖脊肌的肌电起始延迟，作为预期姿势调整（APA）的措施。根据头皮脑电图计算α事件相关去极化（ERD）和Bereitschaftspotentials（BP）的振幅，作为大脑皮层运动生理学的测量。阿帕首先在两组手臂抬起对侧的躯干肌肉中明显。显著的α ERD在LBP参与者的中央和顶叶电极双侧明显，但仅在对侧和中线的电极对那些没有LBP的手臂提出。对于有LBP的参与者，BP幅度与阿帕发作时间呈负相关（但对于没有LBP的参与者则不相关）。大脑皮质活动在手臂运动之前发生改变，需要对慢性LBP患者进行APA。这些结果支持了一个理论模型，改变中枢运动神经生理学与LBP相关，从而暗示康复策略应该解决这些神经运动障碍。
To determine whether low back pain (LBP) associates with altered postural stabilization and concomitant changes in cerebrocortical motor physiology. Ten participants with LBP and 10 participants without LBP performed self-initiated, voluntary arm raises. Electromyographic onset latencies of the bilateral internal oblique and erector spinae muscles were analyzed relative to that of the deltoid muscle as measures of anticipatory postural adjustments (APAs). Amplitudes of alpha event-related desynchronization (ERD) and of Bereitschaftspotentials (BP) were calculated from scalp electroencephalography as measures of cerebrocortical motor physiology. The APA was first evident in the trunk muscles contralateral to the arm raise for both groups. Significant alpha ERD was evident bilaterally at the central and parietal electrodes for participants with LBP but only at the electrodes contralateral and midline to the arm raise for those without LBP. The BP amplitudes negatively correlated with APA onset latencies for participants with (but not for those without) LBP. Cerebrocortical activity becomes altered prior to arm movements requiring APAs for individuals with chronic LBP. These results support a theoretical model that altered central motor neurophysiology associates with LBP, thereby implying that rehabilitation strategies should address these neuromotor impairments.
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