Long and short sleep durations can affect cognitive function in older adults through the chain mediation effect of ADL and depression: evidence from CHARLS2018

IF 3.4 3区医学 Q2 GERIATRICS & GERONTOLOGY Aging Clinical and Experimental Research Pub Date : 2024-11-20 DOI:10.1007/s40520-024-02881-w

Hao Zou, Lijie Jiang, Yueli Hou, Linlin Zhang, Jianrong Liu

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Abstract

Background

Both long and short sleep durations may lead to cognitive decline in the elderly individuals, though the underlying mechanisms remain unclear.

Aims

To explore the mediating mechanism of activities of daily living and depression on different sleep durations and cognitive function in older Chinese older adults.

Methods

This retrospective study used data from 5,899 older adults who completed the 2018 China Health and Retirement Longitudinal Surveys. We used the PROCESS macro in SPSS to determine the chain mediating effect of ADL and depression on the relationship between different sleep durations and cognitive functions.

Results

(1) There were significant correlations among sleep duration, ability to perform ADL, depression, and cognitive function. (2) For sleep durations ≤ 7 h/night or > 7 h/night, ADL and depression play a chain mediating role in the relationship between sleep duration and cognitive function.

Conclusions

Shorter or longer sleep durations were associated with cognitive decline by weakening ADL and worsening depression, which suggests that medical personnel should take action to correct abnormal sleep duration in older adults. Timely treatment of ADL impairment and depression may help prevent cognitive decline.

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长睡眠时间和短睡眠时间可通过 ADL 和抑郁的连锁中介效应影响老年人的认知功能：来自 CHARLS2018 的证据

背景睡眠持续时间过长和过短都可能导致老年人认知功能下降，但其潜在机制仍不清楚。目的探讨日常生活活动和抑郁对中国老年人不同睡眠持续时间和认知功能的中介机制。方法本回顾性研究使用了5899名完成2018年中国健康与退休纵向调查的老年人数据。我们使用SPSS中的PROCESS宏来确定ADL和抑郁对不同睡眠持续时间与认知功能之间关系的连锁中介效应。结果（1）睡眠持续时间、ADL能力、抑郁和认知功能之间存在显著相关。(结论较短或较长的睡眠时间与认知功能的下降有关，其原因是ADL减弱和抑郁加重，这提示医务人员应采取措施纠正老年人异常的睡眠时间。及时治疗ADL障碍和抑郁可能有助于预防认知功能下降。

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来源期刊

Aging Clinical and Experimental Research 医学-老年医学

CiteScore

7.90

自引率

5.00%

发文量

283

审稿时长

1 months

期刊介绍： Aging clinical and experimental research offers a multidisciplinary forum on the progressing field of gerontology and geriatrics. The areas covered by the journal include: biogerontology, neurosciences, epidemiology, clinical gerontology and geriatric assessment, social, economical and behavioral gerontology. “Aging clinical and experimental research” appears bimonthly and publishes review articles, original papers and case reports.