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Social jetlag and sleep debts are altered in different rosters of night shift work

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  • Swaantje Casjens
  • Frank Brenscheidt
  • Anita Tisch
  • Beate Beermann
  • Thomas Brüning
  • Thomas Behrens
  • Sylvia Rabstein

Abstract

Background: Night and shift work are suspected to cause various adverse effects on health and sleep. Sleep deprivation through shift work is assumed to be compensated on free days. So far it is not clear how different shift systems and shift lengths affect sleep structure on work and free days. Especially working night shifts disrupts the circadian rhythm but also extended working hours (12h) might affect sleep characteristics. Hitherto, the magnitude of sleep debt, social jetlag, and Locomotor Inactivity During Sleep (LIDS) in different shift systems is unknown. Methods: Here, we investigated the impact of five different shift rosters on sleep in 129 industrial workers from Germany. Permanent night work with multiple shift systems with and without night shifts and with different shift lengths were compared. Wrist-activity was monitored over 28 days revealing sleep on- and offsets as well as LIDS as proxy for sleep quality. Overall, 3,865 sleep bouts comprising 22,310 hours of sleep were examined. Results: The mean daily age-adjusted sleep duration (including naps) was 6:43h and did not differ between shift workers of different rosters. However, sleep duration on workdays was particularly low in rotational shift systems with 12h-shifts (5:00h), while overall sleep debt was highest. Shift workers showed a median absolute social jetlag of 3:03h, which differed considerably between shift types and rosters (p

Suggested Citation

  • Swaantje Casjens & Frank Brenscheidt & Anita Tisch & Beate Beermann & Thomas Brüning & Thomas Behrens & Sylvia Rabstein, 2022. "Social jetlag and sleep debts are altered in different rosters of night shift work," PLOS ONE, Public Library of Science, vol. 17(1), pages 1-14, January.
    • Handle: RePEc:plo:pone00:0262049
    DOI: 10.1371/journal.pone.0262049
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    1. Thomas Behrens & Katarzyna Burek & Dirk Pallapies & Leoni Kösters & Martin Lehnert & Alexandra Beine & Katharina Wichert & Thomas Kantermann & Céline Vetter & Thomas Brüning & Sylvia Rabstein, 2019. "Decreased psychomotor vigilance of female shift workers after working night shifts," PLOS ONE, Public Library of Science, vol. 14(7), pages 1-17, July.
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