Individual and joint associations between sleep duration and physical activity with cognitive function: A longitudinal analysis among middle-aged and older adults in China

IF 11.1 1区医学 Q1 CLINICAL NEUROLOGY Alzheimer's & Dementia Pub Date : 2024-12-18 DOI:10.1002/alz.14212

Hongwei Liu, Yan Shi, Min Yu, Xiaolei Guo, Ye Ruan, Fei Qin, Rongfei Zhou, Jingyuan Feng, Zihan Hu, Fei Wu, Qingqing Jia, Yanlu Yin, Yanfei Guo, Fan Wu

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Abstract

INTRODUCTION

Studies using cross-sectional data or with a short follow-up period fail to distinguish whether the associations between sleep duration and physical activity with cognitive function result from reverse causation.

METHODS

The longitudinal study examined the individual and joint associations, with specific temporality, between sleep duration and physical activity with cognitive function, using time-lagged linear mixed models and generalized additive mixed models.

RESULTS

A total of 14,694 participants aged ≥ 50 years were included, with an average lagged time of 4.5 (standard deviation 1.3) years. Long sleep duration was independently associated with cognitive decline, while short sleep duration and physical activity were not. The analysis of joint effects showed that increased physical activity slowed the rate of cognitive decline among participants reporting long sleep duration, consistent with the results of the stratified analyses.

DISCUSSION

Interventions on improving sleep should consider concurrent physical activity to maximize benefits for slowing cognitive decline.

Highlights

Long sleep duration was independently associated with worse cognitive function, while short sleep duration was not.
Elevated levels of physical activity were not independently associated with better cognitive function.
Increased physical activity appeared to mitigate the negative impact of long sleep duration on cognitive function.

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睡眠时间和体力活动与认知功能之间的个体和联合关系：中国中老年人的纵向分析

使用横断面数据或短随访期的研究未能区分睡眠时间和身体活动与认知功能之间的关联是否源于反向因果关系。

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来源期刊

Alzheimer's & Dementia 医学-临床神经学

CiteScore

14.50

自引率

5.00%

发文量

299

审稿时长

3 months

期刊介绍： Alzheimer's & Dementia is a peer-reviewed journal that aims to bridge knowledge gaps in dementia research by covering the entire spectrum, from basic science to clinical trials to social and behavioral investigations. It provides a platform for rapid communication of new findings and ideas, optimal translation of research into practical applications, increasing knowledge across diverse disciplines for early detection, diagnosis, and intervention, and identifying promising new research directions. In July 2008, Alzheimer's & Dementia was accepted for indexing by MEDLINE, recognizing its scientific merit and contribution to Alzheimer's research.