University of Oulu

Myllyntausta, S., Kronholm, E., Pulakka, A., Pentti, J., Virtanen, M., & Stenholm, S. (2022). Associations of sleep and individual characteristics with accelerometer-measured catch-up sleep among older employees. Sleep Epidemiology, 2, 100021.

Associations of sleep and individual characteristics with accelerometer-measured catch-up sleep among older employees

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Author: Myllyntausta, Saana1,2,3,4; Kronholm, Erkki4; Pulakka, Anna5,6;
Organizations: 1School of Educational Sciences and Psychology, Psychology, Philosophical Faculty, University of Eastern Finland, P.O. Box 111, Joensuu FI-8010, Finland
2Department of Public Health, Faculty of Medicine, University of Turku and Turku University Hospital, Turku FI-20014, Finland
3Centre for Population Health Research, University of Turku and Turku University Hospital, Turku FI-20014, Finland
4Department of Psychology and Speech-Language Pathology, Faculty of Social Sciences, Turku FI-20014, Finland
5Center for Life Course Health Research, Faculty of Medicine, University of Oulu, P.O.Box 8000, Oulu FI-90014, Finland
6The Population Health Unit, Finnish Institute for Health and Welfare, PO Box 30, Helsinki FI-00271, Finland
7Clinicum, Faculty of Medicine, University of Helsinki, P.O. Box 63, Helsinki 00014, Finland
8Division of Insurance Medicine, Karolinska Institutet, Stockholm 171 77, Sweden
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 0.6 MB)
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Language: English
Published: Elsevier, 2022
Publish Date: 2023-06-27


There is limited knowledge on the characteristics of employees who engage in catch-up sleep, the extension of sleep duration on free days to compensate for sleep loss accumulating during workdays. This study examined associations of accelerometer-measured free day catch-up sleep with sleep duration, sleep timing, and socio-demographic, health and lifestyle factors among older employees. We measured sleep repeatedly with accelerometers among 824 public sector employees in Finland (mean age 63 years; 86% women). On average, the participants provided 1.7 annual accelerometer measurements and 1,437 person-observations in total. Catch-up sleep was defined as longer average sleep duration on free days compared with average sleep duration on workdays. Prevalence of catch-up sleep was 78%. On average, the catch-up sleep group extended their sleep on free days by 1 hour 22 min (95% confidence interval [CI] 1 h 19 min — 1 h 26 min), whereas the non-catch-up sleep group reduced their sleep duration by 45 min (95% CI -50 min — -40 min). Catch-up sleep was mainly associated with delayed awakening time on free days (by 1 h 57 min, 95% CI 1 h 52 min — 2 h 2 min). We also observed a greater social jetlag in the catch-up sleep group in comparison to the non-catch-up sleep group, whereas no differences were observed in chronotype, self-reported sleep, or other individual characteristic. In conclusion, accelerometer-measured catch-up sleep is common among older employees in Finland and major differences in duration and timing of sleep occur between those with and without catch-up sleep.

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Series: Sleep epidemiology
ISSN: 2667-3436
ISSN-E: 2667-3436
ISSN-L: 2667-3436
Volume: 2
Article number: 100021
DOI: 10.1016/j.sleepe.2022.100021
Type of Publication: A1 Journal article – refereed
Field of Science: 3142 Public health care science, environmental and occupational health
Funding: This work was supported by the Academy of Finland [grant numbers 286294, 294154, 319246, and 332030 to SS]; the Finnish Ministry of Education and Culture [to SS]; and the Declaration of Competing Interest [grant numbers 190172 to MV and 118060 to SS].
Copyright information: © 2022 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (