Differences in Feedforward Trunk Muscle Activity in Subgroups of Patients With Mechanical Low Back Pain
Differences in Feedforward Trunk Muscle Activity in Subgroups of Patients With Mechanical Low Back Pain
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DOI：
10.1016/j.apmr.2008.10.033
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发表时间：
2009-07-01
影响因子：
4.3
通讯作者：
Karduna, Andrew R.
中科院分区：
文献类型：
--
作者：
Silfies, Sheri P.;Mehta, Rupal;Karduna, Andrew R.
前馈躯干肌肉活动在亚组C的机械性腰痛patients with mechanical low back pain.Objective：To investigate alterations in trunk muscle timing patterns in subgroups of patients with mechanical low back pain（MLBP）.我们的假设是，MLBP受试者将表现出延迟的肌肉发作，并有更少的肌肉功能，前馈方式比对照组。我们进一步假设，根据诊断分组的MLBP患者亚组之间存在差异，设计：病例对照。设置：实验室。参与者：43名慢性MLBP患者（25例不稳定，18例非不稳定）和39例无症状对照。干预措施：不适用。主要结果测量：采用表面肌电描记法测量了10块躯干肌在自我扰动任务中的起始时间。计算躯干肌相对于前三角肌的起始潜伏期，并确定在前馈中起作用的肌肉数量。
Differences in feedforward trunk muscle activity in subgroups C of patients with mechanical low back pain.Objective: To investigate alterations in trunk muscle timing patterns in subgroups of patients with mechanical low back pain (MLBP). Our hypothesis was that subjects with MLBP would demonstrate delayed muscle onset and have fewer muscles functioning in a feedforward manner than the control group. We further hypothesized that we would find differences between subgroups of our patients with MLBP, grouped according to diagnosis (segmental instability and noninstability).Design: Case-control.Setting: Laboratory.Participants: Forty-three patients with chronic MLBP (25 instability, 18 noninstability) and 39 asymptomatic controls.Interventions: Not applicable.Main Outcome Measures: Surface electromyography was used to measure onset time of 10 trunk muscles during a self-perturbation task. Trunk muscle onset latency relative to the anterior deltoid was calculated and the number of muscles functioning in feedforward determined.Results: Activation timing patterns (P