Similar impact on proprioception has been observed in participants with lumbar delayed-onset muscle soreness (DOMS) and chronic low back pain (LBP), raising questions about the relevance of lumbar DOMS as a suitable pain model for LBP when assessing back pain-related postural stability changes. Does lumbar DOMS impact postural stability? Twenty healthy adults participated in this experimental study and underwent a posturographic examination before and 24 to 36 h after a protocol designed to induce lumbar DOMS. Posturographic examination was assessed during quiet standing on both feet with eyes opened (EO), with eyes closed (EC), and on one-leg (OL) standing with eyes opened. Postural stability was assessed through center of pressure (COP) parameters (COP area, velocity, root mean square, mean power frequency) which were compared using repeated measure ANOVA. Moreover, pain, soreness and pressure pain threshold (PPT) on specific muscles were assessed. There was a significant main effect of the postural condition on all COP variables investigated. More specifically, each COP variable reached a significantly higher value in the OL stance condition than in both EO and EC bipedal conditions (all with p < 0.001). In addition, the COP velocity and the mean power frequency along the anteroposterior direction both reached a significantly higher value in EC than in EO (p < 0.001). In contrast, there was no significant main effect of the DOMS nor significant DOMS X postural condition interaction on any of the COP variables. There was a significant decrease in the PPT value for both the left and right erector spinae muscles, as well as the left biceps femoris. Lumbar DOMS had no impact on postural stability, which contrasts findings in participants with clinical LBP. Although DOMS induces similar trunk sensorimotor adaptations to clinical LBP, it does not appear to trigger similar postural stability adaptations.

中文翻译：

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腰部迟发性肌肉酸痛对站立姿势稳定性的影响

在患有腰部延迟性肌肉酸痛 (DOMS) 和慢性腰痛 (LBP) 的参与者中观察到对本体感觉有类似的影响，这引发了在评估背痛相关姿势时腰部 DOMS 作为 LBP 合适疼痛模型的相关性的问题稳定性变化。腰椎 DOMS 会影响姿势稳定性吗？20 名健康成年人参与了这项实验研究，并在旨在诱导腰椎 DOMS 的方案之前和之后 24 至 36 小时接受了姿势描记检查。姿势描记检查在双脚安静站立（睁眼（EO））、闭眼（EC）和单腿（OL）睁眼站立时进行评估。通过压力中心 (COP) 参数（COP 面积、速度、均方根、平均功率频率）评估姿势稳定性，并使用重复测量方差分析进行比较。此外，还评估了特定肌肉的疼痛、酸痛和压痛阈值 (PPT)。姿势条件对所有研究的 COP 变量都有显着的主效应。更具体地说，每个 COP 变量在 OL 站立条件下达到的值明显高于 EO 和 EC 双足条件下的值（均 p < 0.001）。此外，EC 中的 COP 速度和沿前后方向的平均功率频率均达到显着高于 EO 的值 (p < 0.001)。相比之下，DOMS 没有显着的主效应，DOMS X 姿势条件交互作用对任何 COP 变量都没有显着的影响。左右竖脊肌以及左侧股二头肌的 PPT 值均显着下降。腰椎 DOMS 对姿势稳定性没有影响，这将参与者的研究结果与临床 LBP 进行了对比。尽管 DOMS 会引起与临床 LBP 类似的躯干感觉运动适应，但它似乎不会触发类似的姿势稳定性适应。