Age and gender differences in objective sleep properties using large-scale body acceleration data in a Japanese population

Abstract Using large-scale objective sleep data derived from body acceleration signals of 68,604 Japanese residents ranging from adolescents to the elderly (10–89 years old), we found significant age- and gender-related differences in sleep properties (timing, duration, and quality) in real-life set...

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Autores principales:	Li Li, Toru Nakamura, Junichiro Hayano, Yoshiharu Yamamoto
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c3b3bc3a90294823b3b969eebb5ed7d1
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spelling	oai:doaj.org-article:c3b3bc3a90294823b3b969eebb5ed7d12021-12-02T15:36:30ZAge and gender differences in objective sleep properties using large-scale body acceleration data in a Japanese population10.1038/s41598-021-89341-x2045-2322https://doaj.org/article/c3b3bc3a90294823b3b969eebb5ed7d12021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-89341-xhttps://doaj.org/toc/2045-2322Abstract Using large-scale objective sleep data derived from body acceleration signals of 68,604 Japanese residents ranging from adolescents to the elderly (10–89 years old), we found significant age- and gender-related differences in sleep properties (timing, duration, and quality) in real-life settings. Time-in-bed and total sleep time (TST) showed a U-shaped association with age, indicating their decrease in adulthood following their increase in the elderly. There was a remarkable shift in sleep phase toward earlier bedtime and earlier wake time with increasing age (> 20 years), together with worsening of sleep quality, which is estimated by sleep efficiency (SE) and wake time after sleep onset. Gender comparisons showed that TST was shorter in women than in similarly aged men, which is much evident after the age of 30 years. This was associated with later bedtimes and greater age-related deterioration of sleep quality in women. Compared to men in the same age group, women over age 50 demonstrated a greater reduction in SE with aging, due mainly to increasing durations of nighttime awakening. These differences can be attributed to several intricately intertwined causes, including biological aging as well as socio-cultural and socio-familial factors in Japan. In conclusion, our findings provide valuable insights on the characteristics of Japanese sleep habits.Li LiToru NakamuraJunichiro HayanoYoshiharu YamamotoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Li Li Toru Nakamura Junichiro Hayano Yoshiharu Yamamoto Age and gender differences in objective sleep properties using large-scale body acceleration data in a Japanese population
description	Abstract Using large-scale objective sleep data derived from body acceleration signals of 68,604 Japanese residents ranging from adolescents to the elderly (10–89 years old), we found significant age- and gender-related differences in sleep properties (timing, duration, and quality) in real-life settings. Time-in-bed and total sleep time (TST) showed a U-shaped association with age, indicating their decrease in adulthood following their increase in the elderly. There was a remarkable shift in sleep phase toward earlier bedtime and earlier wake time with increasing age (> 20 years), together with worsening of sleep quality, which is estimated by sleep efficiency (SE) and wake time after sleep onset. Gender comparisons showed that TST was shorter in women than in similarly aged men, which is much evident after the age of 30 years. This was associated with later bedtimes and greater age-related deterioration of sleep quality in women. Compared to men in the same age group, women over age 50 demonstrated a greater reduction in SE with aging, due mainly to increasing durations of nighttime awakening. These differences can be attributed to several intricately intertwined causes, including biological aging as well as socio-cultural and socio-familial factors in Japan. In conclusion, our findings provide valuable insights on the characteristics of Japanese sleep habits.
format	article
author	Li Li Toru Nakamura Junichiro Hayano Yoshiharu Yamamoto
author_facet	Li Li Toru Nakamura Junichiro Hayano Yoshiharu Yamamoto
author_sort	Li Li
title	Age and gender differences in objective sleep properties using large-scale body acceleration data in a Japanese population
title_short	Age and gender differences in objective sleep properties using large-scale body acceleration data in a Japanese population
title_full	Age and gender differences in objective sleep properties using large-scale body acceleration data in a Japanese population
title_fullStr	Age and gender differences in objective sleep properties using large-scale body acceleration data in a Japanese population
title_full_unstemmed	Age and gender differences in objective sleep properties using large-scale body acceleration data in a Japanese population
title_sort	age and gender differences in objective sleep properties using large-scale body acceleration data in a japanese population
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/c3b3bc3a90294823b3b969eebb5ed7d1
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Age and gender differences in objective sleep properties using large-scale body acceleration data in a Japanese population

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