Association between sleep disturbance with motoric cognitive risk syndrome in Chinese older adults

Background and purpose Sleep disturbance and cognitive impairment are common and related in the elderly population worldwide. The aim of the present study was to explore the association between sleep disturbance and motoric cognitive risk (MCR) syndrome, which is characterized by subjective cognitive complaints and objective slow gait in older individuals without dementia or any mobility disability in the community‐dwelling elderly Chinese population. Methods We recruited 940 participants aged ≥65 years from November 2016 to March 2017 in the Ningbo Community Study on Aging (NCSA). Self‐reported sleep duration and sleep‐quality variables, comprehensive geriatric evaluation, as well as indicators for diagnosing MCR syndrome were evaluated in this cross‐sectional study. Results Multiple logistic regression analysis showed that a 1‐SD increase in night (1.1 h) and 24‐h sleep duration (1.3 h) was associated, respectively, with a 21% (95% confidence interval [CI], 1%–47%; p = 0.04) and 30% (95% CI, 3%–64%; p = 0.03) higher odds of having MCR syndrome. Considering sleep duration as a categorical variable, longer night‐sleep duration (>8.5 h) was associated with MCR syndrome (OR, 2.03; p = 0.02) compared to shorter night‐sleep duration (