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Association between sedentary behavior and sleep quality among urban white-collar workers with or at risk of metabolic syndrome : a secondary analysis of a randomized 3-month workplace lifestyle intervention trial

Ishikawa, Yuichi ; Svensson, Thomas LU ; Madhawa, Kaushalya ; Hoang, N. T. ; Chung, Ung Il and Svensson, Akiko Kishi LU (2025) In Journal of Occupational Health 67(1).
Abstract

Objectives: Many Japanese adults experience poor sleep quality. Prolonged sedentary behavior negatively affects health, including sleep-associated problems. We investigated the association between sedentary behavior and sleep quality among urban white-collar workers in Japan with metabolic syndrome or at risk of metabolic syndrome, a population thought to have particularly prolonged sedentary time. Methods: This study was conducted using a prospective cohort study design as a secondary analysis of participants’ data in a lifestyle intervention program using a smartphone application in 5 different companies (>1000 employees) in Tokyo from December 2018 to March 2019. The primary outcome was sleep quality, obtained as the daily score... (More)

Objectives: Many Japanese adults experience poor sleep quality. Prolonged sedentary behavior negatively affects health, including sleep-associated problems. We investigated the association between sedentary behavior and sleep quality among urban white-collar workers in Japan with metabolic syndrome or at risk of metabolic syndrome, a population thought to have particularly prolonged sedentary time. Methods: This study was conducted using a prospective cohort study design as a secondary analysis of participants’ data in a lifestyle intervention program using a smartphone application in 5 different companies (>1000 employees) in Tokyo from December 2018 to March 2019. The primary outcome was sleep quality, obtained as the daily score of relevant items in the St Mary’s Hospital Sleep Questionnaire (SMHSQ) during the study period. The primary exposure was daily sedentary time (hours), which was objectively measured using a wristwatch-type wearable device (Fitbit Versa). Multilevel linear mixed effects analysis adjusted for covariates was used to estimate between-person and within-person associations. Sensitivity analyses were used to investigate between-/within-person associations between sedentary time and the scores of each item related to sleep quality on the SMHSQ. Results: A longer sedentary time was inversely associated with the SMHSQ scores related to sleep quality in multivariable-adjusted models at the individual level (β coefficient −.046; SE 0.016; 95% CI, −.077 to −.015). Longer sedentary time was also inversely associated with each sleep satisfaction-related SMHSQ item. However, no significant associations were observed at the population level. Conclusions: Longer sedentary time was inversely associated with sleep quality at the individual level.

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author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
sedentary behavior, sleep quality, wearable device, white-collar workers
in
Journal of Occupational Health
volume
67
issue
1
article number
uiaf062
publisher
Japan Society for Occupational Health
external identifiers
  • pmid:41162320
  • scopus:105022684122
ISSN
1341-9145
DOI
10.1093/joccuh/uiaf062
language
English
LU publication?
yes
additional info
Publisher Copyright: © The Author(s) [2025].
id
8d230dd6-1b22-4168-b714-e67055731f3c
date added to LUP
2025-12-03 08:15:25
date last changed
2025-12-17 09:55:40
@article{8d230dd6-1b22-4168-b714-e67055731f3c,
  abstract     = {{<p>Objectives: Many Japanese adults experience poor sleep quality. Prolonged sedentary behavior negatively affects health, including sleep-associated problems. We investigated the association between sedentary behavior and sleep quality among urban white-collar workers in Japan with metabolic syndrome or at risk of metabolic syndrome, a population thought to have particularly prolonged sedentary time. Methods: This study was conducted using a prospective cohort study design as a secondary analysis of participants’ data in a lifestyle intervention program using a smartphone application in 5 different companies (&gt;1000 employees) in Tokyo from December 2018 to March 2019. The primary outcome was sleep quality, obtained as the daily score of relevant items in the St Mary’s Hospital Sleep Questionnaire (SMHSQ) during the study period. The primary exposure was daily sedentary time (hours), which was objectively measured using a wristwatch-type wearable device (Fitbit Versa). Multilevel linear mixed effects analysis adjusted for covariates was used to estimate between-person and within-person associations. Sensitivity analyses were used to investigate between-/within-person associations between sedentary time and the scores of each item related to sleep quality on the SMHSQ. Results: A longer sedentary time was inversely associated with the SMHSQ scores related to sleep quality in multivariable-adjusted models at the individual level (β coefficient −.046; SE 0.016; 95% CI, −.077 to −.015). Longer sedentary time was also inversely associated with each sleep satisfaction-related SMHSQ item. However, no significant associations were observed at the population level. Conclusions: Longer sedentary time was inversely associated with sleep quality at the individual level.</p>}},
  author       = {{Ishikawa, Yuichi and Svensson, Thomas and Madhawa, Kaushalya and Hoang, N. T. and Chung, Ung Il and Svensson, Akiko Kishi}},
  issn         = {{1341-9145}},
  keywords     = {{sedentary behavior; sleep quality; wearable device; white-collar workers}},
  language     = {{eng}},
  month        = {{10}},
  number       = {{1}},
  publisher    = {{Japan Society for Occupational Health}},
  series       = {{Journal of Occupational Health}},
  title        = {{Association between sedentary behavior and sleep quality among urban white-collar workers with or at risk of metabolic syndrome : a secondary analysis of a randomized 3-month workplace lifestyle intervention trial}},
  url          = {{http://dx.doi.org/10.1093/joccuh/uiaf062}},
  doi          = {{10.1093/joccuh/uiaf062}},
  volume       = {{67}},
  year         = {{2025}},
}