Low back pain (LBP) and sleep quality are two very prevalent complaints in the older population. However, little is known about the prognostic relationship between sleep quality and disability in older adults with LBP. The aim of this study was to examine the association between sleep quality and disability in older adults with LBP. This was a longitudinal study over a 6-month period. Older adults with LBP in the last 12 weeks and who had preserved cognitive functions were recruited. The questionnaires used were the Pittsburgh Sleep Quality Index and the Roland Morris Disability Questionnaire. At baseline, we collected information on demographic/anthropometric variables, cognitive status, depression, daytime sleepiness, and comorbidities. Linear regression adjusted for potential covariates were performed. Poor sleep at baseline predicted higher disability after 6 months [β = 0.30 (CI95%:0.07 to 0.55)]. Our results support the existence of an important relationship between sleep and disability in older adults with LBP.

腰痛 (LBP) 和睡眠质量是老年人口中两个非常普遍的抱怨。然而，对于患有 LBP 的老年人睡眠质量与残疾之间的预后关系知之甚少。本研究的目的是检查患有 LBP 的老年人的睡眠质量与残疾之间的关联。这是一项为期 6 个月的纵向研究。招募了过去 12 周内患有 LBP 且认知功能得以保留的老年人。使用的问卷是匹兹堡睡眠质量指数和罗兰莫里斯残疾问卷。在基线时，我们收集了有关人口统计/人体测量变量、认知状态、抑郁、白天嗜睡和合并症的信息。进行针对潜在协变量调整的线性回归。基线睡眠不佳预示着 6 个月后残疾程度更高 [β = 0.30 (CI95%: 0.07 to 0.55)]。我们的结果支持在患有 LBP 的老年人中，睡眠与残疾之间存在重要关系。