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首页> 外文期刊>Gait & posture >Pain catastrophizing and trunk muscle activation during walking in patients with chronic low back pain
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Pain catastrophizing and trunk muscle activation during walking in patients with chronic low back pain

机译：慢性下腰痛患者行走过程中的疼痛灾难性变化和躯干肌肉激活

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It has been hypothesized that individuals with low back pain (LBP) will have higher trunk muscle activity during gait, in an attempt to limit spine motion, and that this "guarding strategy" may be influenced by the person's psychological response to pain. This study investigated whether the amplitude of trunk muscle activation differs between persons with chronic LBP and healthy individuals during walking, and whether changes in muscle activation were related to pain catastrophizing. Thirty persons with chronic non-specific LBP, stratified into 2 groups of high (HLBP) and low (LLBP) pain catastrophizing, were contrasted with a control group of 15 healthy individuals during walking on a treadmill at a self-selected speed. Surface electromyographic (EMG) data were recorded from 10 trunk muscles. The effects of Group and gait Sub-phase on EMG activation amplitudes were assessed. The HLBP group exhibited higher activation of certain muscles throughout the gait cycle, and reduced variability of others at specific sub phases of gait. A significant correlation was found between activation amplitude and pain catastrophizing in most muscles, when controlling for gait speed and pain intensity. These data indicate that altered trunk muscle activation is present in some patients with LBP during walking, but does not represent a universal increase in activation for all muscles. This altered neuromotor control is, however, more strongly associated with pain catastrophizing than with pain intensity, and appears to represent a non-functional, maladaptive behavior, as it alters the normal, phasic pattern of activation in certain trunk muscles. (C) 2016 Elsevier B.V. All rights reserved.
机译：据推测，腰背痛（LBP）的人在步态过程中会具有较高的躯干肌肉活动，以试图限制脊柱运动，并且这种“保护策略”可能会受到该人对疼痛的心理反应的影响。这项研究调查了患有慢性LBP的人和健康人在步行过程中躯干肌肉激活的幅度是否存在差异，以及肌肉激活的变化是否与疼痛的灾难性发生有关。在自行选择的跑步机上行走时，将30位患有慢性非特异性LBP的人分为两组，分别是高（HLBP）和低（LLBP）疼痛突变，而对照组则是15名健康个体。从10个躯干肌肉记录表面肌电图（EMG）数据。评估了组和步态子阶段对EMG激活幅度的影响。 HLBP组在整个步态周期中均表现出较高的肌肉激活能力，而在步态的特定子阶段中其他肌肉的变异性降低。当控制步态速度和疼痛强度时，在大多数肌肉的激活幅度和疼痛灾难性之间发现了显着的相关性。这些数据表明，某些LBP患者在步行过程中躯干肌肉激活发生改变，但并不代表所有肌肉的激活普遍增加。然而，这种神经运动控制的改变与疼痛的严重程度比与疼痛的强度更密切相关，并且似乎代表了一种无功能的，适应不良的行为，因为它改变了某些躯干肌肉的正常的，阶段性的激活方式。 （C）2016 Elsevier B.V.保留所有权利。

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