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Longitudinal associations between daytime napping and cognitive function in Chinese older adults
Lijuan Zhang1, Chen Chen1, Hong Zhang1
1Department of Health Statistics, School of Public Health, Chongqing Medical University, Chongqing 400016, China.
Archives of Gerontology and Geriatrics
|December 28, 2022
Summary
Extended daytime napping is linked to cognitive decline in older Chinese adults. This study highlights the importance of napping habits for maintaining brain health in the elderly population.
Area of Science:
- Gerontology
- Cognitive Neuroscience
- Epidemiology
Background:
- Limited understanding of daytime napping's impact on cognitive function in China.
- Need to investigate longitudinal associations in the elderly Chinese population.
Purpose of the Study:
- To explore the cross-sectional and longitudinal relationship between daytime napping and cognitive performance.
- Focus on episodic memory and mental status in older adults.
Main Methods:
- Utilized data from the China Health and Retirement Longitudinal Study (CHARLS).
- Assessed self-reported daytime napping and cognitive function via questionnaires.
- Employed linear regression and mixed-effect models for analysis.
Main Results:
- Cross-sectional analysis: Non-nappers and extended nappers showed lower global cognition, episodic memory, and mental status scores.
- Longitudinal analysis: No napping and extended napping associated with global cognitive decline.
- Extended napping specifically linked to decline in episodic memory and mental status.
Conclusions:
- A significant longitudinal association exists between extended daytime napping and poorer cognitive function.
- Napping duration is a relevant factor for cognitive health trajectories in older Chinese adults.
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