PDF(Pubmed)
Abstract：
Delayed onset muscle soreness (DOMS) of the lower back is considered a surrogate for acute low back pain (aLBP) in experimental studies. Of note, it is often unquestioningly assumed to be muscle pain. To date, there has not been a study analyzing lumbar DOMS in terms of its pain origin, which was the aim of this study. Sixteen healthy individuals (L-DOMS) were enrolled for the present study and matched to participants from a previous study (n = 16, L-PAIN) who had undergone selective electrical stimulation of the thoracolumbar fascia and the multifidus muscle. DOMS was induced in the lower back of the L-DOMS group using eccentric trunk extensions performed until exhaustion. On subsequent days, pain on palpation (100-mm analogue scale), pressure pain threshold (PPT), and the Pain Sensation Scale (SES) were used to examine the sensory characteristics of DOMS. Pain on palpation showed a significant increase 24 and 48 h after eccentric training, whereas PPT was not affected (p > 0.05). Factor analysis of L-DOMS and L-PAIN sensory descriptors (SES) yielded a stable three-factor solution distinguishing superficial thermal (\"heat pain \") from superficial mechanical pain (\"sharp pain\") and \"deep pain.\" \"Heat pain \" and \"deep pain\" in L-DOMS were almost identical to sensory descriptors from electrical stimulation of fascial tissue (L-PAIN, all p > 0.679) but significantly different from muscle pain (all p < 0.029). The differences in sensory description patterns as well as in PPT and self-reported DOMS for palpation pain scores suggest that DOMS has a fascial rather than a muscular origin.
摘要：
在实验研究中，下背部的延迟性肌肉酸痛（DOMS）被认为是急性下腰痛（aLBP）的替代品。值得注意的是，通常毫无疑问地认为是肌肉疼痛。迄今为止,没有一项研究分析腰椎DOMS的疼痛起源，这就是本研究的目的。本研究招募了16名健康个体（L-DOMS），并与先前研究的参与者（n=16，L-PAIN）相匹配，这些参与者对胸腰椎筋膜和多裂肌进行了选择性电刺激。使用偏心躯干延伸在L-DOMS组的下背部诱导DOMS，直到精疲力竭。在随后的日子里，触诊疼痛（100毫米模拟量表），压力痛阈值（PPT），使用疼痛感觉量表（SES）检查DOMS的感觉特征。偏心训练后24和48h触诊疼痛显着增加，而PPT未受影响(p>0.05)。L-DOMS和L-PAIN感觉描述符（SES）的因子分析产生了一种稳定的三因素解决方案，可区分浅表热（“热痛”）与浅表机械疼痛（“锐痛”）和“深痛”。L-DOMS中的“热痛”和“深痛”与筋膜组织电刺激的感觉描述几乎相同（L-PAIN，所有p>0.679)，但与肌肉疼痛显著不同(所有p<0.029)。触诊疼痛评分的感觉描述模式以及PPT和自我报告的DOMS的差异表明，DOMS具有筋膜而不是肌肉起源。
