Correlation Between Nighttime Sleep Duration and Cognitive Dysfunction in Chinese Elderly
10.11969/j.issn.1673-548X.2025.01.025
- VernacularTitle:中国老年人夜间睡眠时间与认知障碍的相关性研究
- Author:
Yue SONG
1
;
Jun TIAN
;
Qing SHU
Author Information
1. 430071 武汉大学中南医院骨科康复科;430079 武汉体育学院
- Publication Type:Journal Article
- Keywords:
Elderly;
Sleep duration;
Cognitive dysfunction
- From:
Journal of Medical Research
2025;54(1):134-138,162
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the correlation between nighttime sleep duration and cognitive dysfunction in Chinese elderly o-ver 65 years.Methods Based on cross-sectional analysis of CLHLS database,the relevant baseline data of the target population were collected,sleep duration was collected by questionnaire,and 7-8h was used as a reference to divide it into three categories:insufficient sleep,normal sleep,and excessive sleep.Minimum mental state examination(MMSE)was used to assess cognitive dysfunction in elderly and Logistic regression analysis was used to explore the correlation between sleep duration and cognitive dysfunction.Results A total of 111 13subjects were enrolled in this study,among whom 4142(37.3％)subjects were insufficient sleep,4065(36.6％)subjects were nor-mal sleep,and 2906(26.1％)subjects were excessive sleep.The detection rate of cognitive impairment was 28.6％(3178/11113).The scatterplot results showed that sleep duration was nonlinearly correlated with cognitive function.After adjusting for related confounding fac-tors,both insufficient and excessive sleep were associated with an increased risk of cognitive dysfunction.The restricted cubic spline(RCS)model suggested that there was an approximate U-shaped relationship between nighttime sleep duration and the risk for cognitive dysfunc-tion,and the risk of cognitive dysfunction was lowest when the sleep duration was controlled between 5.4h and 7.2h.Conclusion Both in-sufficient and excessive sleep at night increase the risk of cognitive dysfunction,so the optimal sleep duration should be encouraged to re-duce the occurrence of cognitive dysfunction.
