Related Experiment Video
Updated: Nov 20, 2025

Multi-Modal Home Sleep Monitoring in Older Adults
Published on: January 26, 2019
Dietary variety is associated with sleep efficiency in urban-dwelling older adults: A longitudinal study
Kaori Yamamoto1, Keiko Motokawa2, Takahiro Yoshizaki3
1Graduate School of Food and Nutritional Science, Toyo University, 1-1-1, Izumino, Itakura-machi, Ora-gun, Gunma, 374-0193, Japan; Tokyo Metropolitan Institute of Gerontology, 35-2, Sakae-cho, Itabashi-ku, Tokyo, 173-0015, Japan.
Background & Aims:
Improving sleep quality is important for an aging society. However, no study has been conducted on the association between dietary variety and sleep efficiency among older Japanese adults using longitudinal data. The current study is a longitudinal study that aimed to elucidate the association between dietary variety and sleep efficiency in older Japanese adults.
Methods:
This study was conducted among older adults (≥70 years old in 2016) in the metropolitan area of Tokyo, Japan, between 2016 and 2018. Dietary variety score (DVS) and sleep efficiency were determined for all participants and were used to assess dietary habits and sleep quality, respectively. A cross-lagged panel analysis was used to consider the prospective associations between DVS and sleep efficiency, and this analysis was performed before and after adjusting for possible covariates in the 2016 data.
Results:
After adjusting for age, sex, body mass index, current drinking status, current smoking status, exercise habits, living (alone or with others) style, the Japanese version of the Geriatric Depression Scale (Short Form), sleep duration and retiring time the DVS in 2016 predicted the sleep efficiency in 2018 (β = 0.130, p < 0.05).
Conclusion:
The possibility that DVS can predict sleep efficiency 2 years later was demonstrated.
Related Concept Videos
Substance Use Disorders Affecting Sleep
Understanding the concepts of physical dependence,...
Insufficient Sleep and Sleep Deprivation
Sleep deprivation is a more severe form of sleep loss...
Correlations
Management of Insomnia
Understanding Sleep
The circadian rhythm, a nearly 24-hour cycle, is deeply influenced by environmental light cues. Light exposure directly affects the hypothalamus, which in turn regulates...
Insomnia
Multiple factors contribute...

