Bidirectional associations between physical activity and sleep in older adults: a multilevel analysis using polysomnography

Jaehoon Seol, Jaehee Lee, Insung Park, Kumpei Tokuyama, Shoji Fukusumi, Toshio Kokubo, Masashi Yanagisawa, Tomohiro Okura

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Although recent studies have examined the bidirectional associations between physical activity and sleep parameters, few have focused on older adults utilizing objective assessments, such as polysomnography. This micro-longitudinal observational study included 92 Japanese older adults (aged 65–86 years) who underwent objective evaluations of sleep quality using polysomnography and completed subjective sleep-related questionnaires. Activity levels were assessed using an accelerometer. Polysomnography, subjective sleep-related questionnaires, and accelerometer were administered for 7 consecutive days. Multilevel models (participant-, day-level) were used to examine the temporal associations of objective and subjective sleep parameters with sedentary behavior and physical activity. In the day-level analysis, higher levels of sedentary behavior during daytime were associated with longer rapid eye movement (REM) sleep, shorter REM latency, lower levels of non-REM sleep (stage N3), and reduced delta power during daytime. Higher levels of low-intensity physical activity during daytime were associated with lower levels of REM sleep, longer REM latency, and increased stage N3 sleep in the day-level analysis. Higher levels of moderate-to-vigorous physical activity were associated with increased REM latency. Longer subjective sleep time was associated with increased next-day moderate-to-vigorous physical activity. Thus, low-intensity physical activity may provide objective benefits related to deep sleep parameters in older adults.

Original languageEnglish (US)
Article number15399
JournalScientific reports
Issue number1
StatePublished - Dec 2022
Externally publishedYes

ASJC Scopus subject areas

  • General


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