Decreased variability in postural control strategies in young people with non-specific low back pain is associated with altered proprioceptive reweighting
Decreased variability in postural control strategies in young people with non-specific low back pain is associated with altered proprioceptive reweighting
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DOI：
10.1007/s00421-010-1637-x
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发表时间：
2011-01-01
影响因子：
3
通讯作者：
Janssens, Lotte
中科院分区：
文献类型：
--
作者：
Claeys, Kurt;Brumagne, Simon;Janssens, Lotte
最佳姿势控制是日常生活中的一项基本能力，并且变化很大。本研究的目的是调查年轻人是否有能力根据姿势状况选择最佳的姿势控制策略，并研究非特异性腰痛（NSLBP）是否影响本体感觉姿势控制策略的变异性。患有 NSLBP 的年轻个体 (n = 106) 和健康对照者 (n = 50) 在不同姿势条件下（即坐着、稳定支撑站立和不稳定支撑站立）在测力台上进行测试。通过小腿三头肌和腰多裂肌的肌肉振动直接检查本体感觉在姿势控制中的作用。在不同试验期间记录压力中心的均方根和平均位移。为了评估本体感觉姿势控制策略，计算了相对本体感觉权重（RPW，踝关节肌肉本体感觉输入与背部肌肉本体感觉输入的比率）。在更复杂的姿势条件下，NSLBP 患者的姿势稳健性明显较差 (p < 0.05)。在所有姿势条件下，NSLBP 组的 RPW 值均显着较高（p < 0.05），表明依赖背部肌肉本体感觉输入进行姿势控制的能力较低。因此，健康对照者似乎有能力根据姿势情况选择更优化的姿势控制策略。相比之下，患有 NSLBP 的年轻人在复杂的姿势条件下切换到更多节段的姿势控制策略的能力下降，从而导致姿势稳健性下降。
Optimal postural control is an essential capacity in daily life and can be highly variable. The purpose of this study was to investigate if young people have the ability to choose the optimal postural control strategy according to the postural condition and to investigate if non-specific low back pain (NSLBP) influences the variability in proprioceptive postural control strategies. Young individuals with NSLBP (n = 106) and healthy controls (n = 50) were tested on a force plate in different postural conditions (i.e., sitting, stable support standing and unstable support standing). The role of proprioception in postural control was directly examined by means of muscle vibration on triceps surae and lumbar multifidus muscles. Root mean square and mean displacements of the center of pressure were recorded during the different trials. To appraise the proprioceptive postural control strategy, the relative proprioceptive weighting (RPW, ratio of ankle muscles proprioceptive inputs vs. back muscles proprioceptive inputs) was calculated. Postural robustness was significantly less in individuals with NSLBP during the more complex postural conditions (p < 0.05). Significantly higher RPW values were observed in the NSLBP group in all postural conditions (p < 0.05), suggesting less ability to rely on back muscle proprioceptive inputs for postural control. Therefore, healthy controls seem to have the ability to choose a more optimal postural control strategy according to the postural condition. In contrast, young people with NSLBP showed a reduced capacity to switch to a more multi-segmental postural control strategy during complex postural conditions, which leads to decreased postural robustness.