Decreased limits of stability in response to postural perturbations in subjects with low back pain
Decreased limits of stability in response to postural perturbations in subjects with low back pain
复制标题
DOI：
10.1016/j.clinbiomech.2006.04.016
复制
发表时间：
2006-11-01
影响因子：
1.8
通讯作者：
Bunn, Janice Y.
中科院分区：
文献类型：
--
作者：
Henry, Sharon M.;Hitt, Juvena R.;Bunn, Janice Y.
背景。腰痛与神经肌肉控制变化导致的异常运动策略有关。导致腰痛的一个可能的因素是躯干肌肉控制不良，因此了解该人群运动控制的改变可以指导康复。支撑表面平移后的姿势反应的量化是检查腰痛患者运动控制障碍的一种方法。方法。 24 名无腰痛的健康受试者 [平均 33 (SD 11) 岁] 和 26 名患有慢性、复发性腰痛的受试者 [平均 39 (SD 13) 岁] 被要求站立，双脚放在单独的测力板上，测力板安装在可移动平台上。该平台意外地在 12 个方向之一上进行了总共 72 次试验。对于矢状面和额状面，推导出压力位移的净中心，并通过结合运动学和人体测量数据计算总体重心。对于矢状面反应，与没有腰痛的受试者相比，患有腰痛的受试者矢状面压力中心反应减少并延迟（P < 0.01）。相比之下，腰痛组的矢状面质量中心反应幅度较大（P = 0.03），但发病时间同样延迟（P = 0.04）。额状面反应在各组之间没有差异。解释。患有腰痛的受试者在反应的幅度和时间方面都改变了自动姿势协调，表明神经肌肉控制发生了变化。 (c) 2006 Elsevier Ltd. 保留所有权利。
Background. Low back pain is associated with abnormal movement strategies due to changes in neuromuscular control. A plausible contributing factor to low back pain is poor control of trunk muscles, thus understanding motor control alterations in this population can guide rehabilitation. Quantification of postural responses following support surface translations is one way to examine motor control impairments in people with low back pain.Methods. Twenty-four healthy subjects [mean 33 (SD 11) years] who had no low back pain and 26 subjects [mean 39 (SD 13) years] with chronic, recurrent low back pain were instructed to stand with feet placed on separate force plates, which were mounted on a moveable platform. The platform was translated unexpectedly in one of 12 directions for a total of 72 trials. For both the sagittal and frontal planes, the net center of pressure displacement was derived and the total body center of mass was calculated by combining kinematic and anthropometric data.Findings. For sagittal plane responses, subjects with low back pain had reduced and delayed sagittal plane center of pressure responses (P < 0.01) compared to the subjects without low back pain. In contrast, the sagittal plane center of mass responses were larger in magnitude (P = 0.03) yet similarly delayed in onset (P = 0.04) for the low back pain group. Frontal plane responses did not differ between groups.Interpretation. Subjects with low back pain have altered automatic postural coordination, both in terms of magnitude and timing of responses, indicating alterations in neuromuscular control. (c) 2006 Elsevier Ltd. All rights reserved.