Gerência Regional de Brasília, Oswaldo Cruz Foundation (FIOCRUZ), Distrito Federal, Brazil.
René Rachou Institute, Oswaldo Cruz Foundation (FIOCRUZ), Belo Horizonte, Brazil.
Public Health. 2024 Oct;235:56-62. doi: 10.1016/j.puhe.2024.06.029. Epub 2024 Jul 23.
The aim of this study was to investigate the longitudinal association of sleep with physical performance in a representative sample of non-institutionalised older adults residing in the municipality of São Paulo, Brazil.
Prospective cohort study.
The current longitudinal study used data extracted from the Health, Well-being, and Aging Study (Estudo Saúde Bem-Estar e Envelhecimento [SABE]). The study population consisted of individuals aged ≥60 years who participated in the study in 2010 or 2015. Dependent variables included the Short Physical Performance Battery (SPPB) and gait speed. Independent variables of interest were self-reported sleep difficulty, daytime sleepiness and sleep quality. The longitudinal association between sleep variables and the outcomes was evaluated using Generalised Estimating Equations (GEE) Models adjusted for covariates. All the variables, except age, sex and schooling, were assessed at baseline and follow-up visits (2010 and 2015).
The analyses included 2205 observations from 1559 individuals. The population mean age was 72 years in 2010 and 71 years in 2015, with a higher prevalence of women in both years. Between 2010 and 2015, there was a decline in the SPPB score and gait speed. Daytime sleepiness was negatively associated with the SPPB score [Coef.: -0.38 (95% confidence interval {CI}: -0.56, -0.21)] and gait speed [Coef.: -0.03 (95% CI: -0.05, -0.01)]. Poor sleep quality was negatively associated with the SPPB score [Coef.: -0.29 (95% CI: -0.57, -0.01)] and gait speed [Coef.: -0.03 (95% CI: -0.06, -0.00)].
Daytime sleepiness and poor sleep quality are associated with compromised physical performance in non-institutionalised older adults, and this association remained consistent over time.
本研究旨在调查睡眠与巴西圣保罗市非机构化老年人代表性样本身体机能的纵向关联。
前瞻性队列研究。
本纵向研究使用了健康、幸福和衰老研究（Estudo Saúde Bem-Estar e Envelhecimento [SABE]）提取的数据。研究人群包括 2010 年或 2015 年参加研究的年龄≥60 岁的个体。因变量包括短体适能电池（Short Physical Performance Battery [SPPB]）和步态速度。感兴趣的自变量为自我报告的睡眠困难、日间嗜睡和睡眠质量。使用广义估计方程（Generalised Estimating Equations [GEE]）模型，根据协变量调整睡眠变量与结局之间的纵向关联。除年龄、性别和教育程度外，所有变量均在基线和随访（2010 年和 2015 年）时进行评估。
分析包括 1559 名个体的 2205 次观测。2010 年和 2015 年的人群平均年龄分别为 72 岁和 71 岁，两年中女性的比例均较高。2010 年至 2015 年间，SPPB 评分和步态速度均下降。日间嗜睡与 SPPB 评分呈负相关[系数：-0.38（95%置信区间{CI}：-0.56，-0.21)]和步态速度[系数：-0.03（95%CI：-0.05，-0.01)]。睡眠质量差与 SPPB 评分呈负相关[系数：-0.29（95%CI：-0.57，-0.01）]和步态速度[系数：-0.03（95%CI：-0.06，-0.00）]。
日间嗜睡和睡眠质量差与非机构化老年人身体机能受损有关，且这种关联随着时间的推移保持一致。
