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The impact of breaking up prolonged sitting with physical activity during simulated dayshifts and nightshifts on sleep architecture: a randomised controlled trial

Charlotte C. Gupta, Imesha Vitanege, Sally A. Ferguson, Corneel Vandelanotte, Mitch J. Duncan, Dayna F. Easton, Georgia Tuckwell, Courtney Ah Shay, Philip Tucker Orcid Logo, Michele Lastella, Maria Zerella, Grace E. Vincent

Scientific Reports, Volume: 15, Start page: 20883

Swansea University Author: Philip Tucker Orcid Logo

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DOI (Published version): 10.1038/s41598-025-04955-9

Abstract

Inadequate sleep is common and contributes to poor health outcomes. Physical activity has a positive impact on sleep outcomes, however the prevalence of physical inactivity is increasing, coupled with the rise of sedentary behaviour at work. Interventions that promote physical activity and reduce se...

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Published in: Scientific Reports
ISSN: 2045-2322
Published: Springer Nature 2025
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URI: https://cronfa.swan.ac.uk/Record/cronfa69885
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Interventions that promote physical activity and reduce sedentary behaviour are essential, as they can improve sleep. The current study investigated the effects of breaking up prolonged sitting with physical activity during the day or night, compared to not breaking up sitting, on sleep architecture during a 9 h or 5 h sleep opportunity. Participants (n = 125, 51% male, 23.4 &#xB1; 4.8 years of age) completed an in-laboratory sleep study, with five simulated shifts during the day or night. Sleep opportunities were either 9 h or 5 h following each shift. Participants were allocated to one of six conditions: Sit9D or Break9D (sedentary or breaking up sitting day and 9 h sleep opportunity), Sit5D or Break5D (sedentary or breaking up sitting day and 5 h sleep opportunity), or Sit9N or Break9N (sedentary or breaking up sitting night and 9 h sleep opportunity). Sleep was monitored using polysomnography. In the analysis of day shifts, mixed model ANOVAs demonstrated a significant physical activity *sleep opportunity interaction for total sleep time (p &lt; 0.001), sleep onset latency (p &lt; 0.001), time spent in N2 (p &lt; 0.001) and N3 (p = 0.03). Post-hoc analyses revealed that participants in the 9 h sleep opportunity conditions had longer total sleep time, shorter sleep onset latency, and more slow-wave sleep (N3) during sleep opportunities 1&#x2013;4 but not sleep opportunity 5. There were no significant differences in sleep architecture between physical activity condition for the nightshift conditions. Better sleep quality was seen in the 9 h condition compared to the 5 h condition, and breaking up sitting did not affect sleep. 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spelling 2025-07-03T14:25:59.9496988 v2 69885 2025-07-03 The impact of breaking up prolonged sitting with physical activity during simulated dayshifts and nightshifts on sleep architecture: a randomised controlled trial 7d07250cf5f1cbaf8788af9f48cf000a 0000-0002-8105-0901 Philip Tucker Philip Tucker true false 2025-07-03 PSYS Inadequate sleep is common and contributes to poor health outcomes. Physical activity has a positive impact on sleep outcomes, however the prevalence of physical inactivity is increasing, coupled with the rise of sedentary behaviour at work. Interventions that promote physical activity and reduce sedentary behaviour are essential, as they can improve sleep. The current study investigated the effects of breaking up prolonged sitting with physical activity during the day or night, compared to not breaking up sitting, on sleep architecture during a 9 h or 5 h sleep opportunity. Participants (n = 125, 51% male, 23.4 ± 4.8 years of age) completed an in-laboratory sleep study, with five simulated shifts during the day or night. Sleep opportunities were either 9 h or 5 h following each shift. Participants were allocated to one of six conditions: Sit9D or Break9D (sedentary or breaking up sitting day and 9 h sleep opportunity), Sit5D or Break5D (sedentary or breaking up sitting day and 5 h sleep opportunity), or Sit9N or Break9N (sedentary or breaking up sitting night and 9 h sleep opportunity). Sleep was monitored using polysomnography. In the analysis of day shifts, mixed model ANOVAs demonstrated a significant physical activity *sleep opportunity interaction for total sleep time (p < 0.001), sleep onset latency (p < 0.001), time spent in N2 (p < 0.001) and N3 (p = 0.03). Post-hoc analyses revealed that participants in the 9 h sleep opportunity conditions had longer total sleep time, shorter sleep onset latency, and more slow-wave sleep (N3) during sleep opportunities 1–4 but not sleep opportunity 5. There were no significant differences in sleep architecture between physical activity condition for the nightshift conditions. Better sleep quality was seen in the 9 h condition compared to the 5 h condition, and breaking up sitting did not affect sleep. Given the benefits of breaking up sitting on health, our findings suggest a breaking up sitting intervention can be promoted without detrimental impacts on sleep. Journal Article Scientific Reports 15 20883 Springer Nature 2045-2322 Shift work; Sedentary behaviour; Breaking up sitting; Physical activity 1 7 2025 2025-07-01 10.1038/s41598-025-04955-9 COLLEGE NANME Psychology School COLLEGE CODE PSYS Swansea University Another institution paid the OA fee Funding was provided by the Australian Research Council (DP190101130). 2025-07-03T14:25:59.9496988 2025-07-03T14:19:28.4884221 Faculty of Medicine, Health and Life Sciences School of Psychology Charlotte C. Gupta 1 Imesha Vitanege 2 Sally A. Ferguson 3 Corneel Vandelanotte 4 Mitch J. Duncan 5 Dayna F. Easton 6 Georgia Tuckwell 7 Courtney Ah Shay 8 Philip Tucker 0000-0002-8105-0901 9 Michele Lastella 10 Maria Zerella 11 Grace E. Vincent 12 69885__34666__9686b47b9b3b41029a60bbb4f76764ab.pdf 41598_2025_Article_4955.pdf 2025-07-03T14:19:28.4883490 Output 2542563 application/pdf Version of Record true © The Author(s) 2025. This article is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0). true eng http://creativecommons.org/licenses/by-nc-nd/4.0/
title The impact of breaking up prolonged sitting with physical activity during simulated dayshifts and nightshifts on sleep architecture: a randomised controlled trial
spellingShingle The impact of breaking up prolonged sitting with physical activity during simulated dayshifts and nightshifts on sleep architecture: a randomised controlled trial
Philip Tucker
title_short The impact of breaking up prolonged sitting with physical activity during simulated dayshifts and nightshifts on sleep architecture: a randomised controlled trial
title_full The impact of breaking up prolonged sitting with physical activity during simulated dayshifts and nightshifts on sleep architecture: a randomised controlled trial
title_fullStr The impact of breaking up prolonged sitting with physical activity during simulated dayshifts and nightshifts on sleep architecture: a randomised controlled trial
title_full_unstemmed The impact of breaking up prolonged sitting with physical activity during simulated dayshifts and nightshifts on sleep architecture: a randomised controlled trial
title_sort The impact of breaking up prolonged sitting with physical activity during simulated dayshifts and nightshifts on sleep architecture: a randomised controlled trial
author_id_str_mv 7d07250cf5f1cbaf8788af9f48cf000a
author_id_fullname_str_mv 7d07250cf5f1cbaf8788af9f48cf000a_***_Philip Tucker
author Philip Tucker
author2 Charlotte C. Gupta
Imesha Vitanege
Sally A. Ferguson
Corneel Vandelanotte
Mitch J. Duncan
Dayna F. Easton
Georgia Tuckwell
Courtney Ah Shay
Philip Tucker
Michele Lastella
Maria Zerella
Grace E. Vincent
format Journal article
container_title Scientific Reports
container_volume 15
container_start_page 20883
publishDate 2025
institution Swansea University
issn 2045-2322
doi_str_mv 10.1038/s41598-025-04955-9
publisher Springer Nature
college_str Faculty of Medicine, Health and Life Sciences
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hierarchy_top_id facultyofmedicinehealthandlifesciences
hierarchy_top_title Faculty of Medicine, Health and Life Sciences
hierarchy_parent_id facultyofmedicinehealthandlifesciences
hierarchy_parent_title Faculty of Medicine, Health and Life Sciences
department_str School of Psychology{{{_:::_}}}Faculty of Medicine, Health and Life Sciences{{{_:::_}}}School of Psychology
document_store_str 1
active_str 0
description Inadequate sleep is common and contributes to poor health outcomes. Physical activity has a positive impact on sleep outcomes, however the prevalence of physical inactivity is increasing, coupled with the rise of sedentary behaviour at work. Interventions that promote physical activity and reduce sedentary behaviour are essential, as they can improve sleep. The current study investigated the effects of breaking up prolonged sitting with physical activity during the day or night, compared to not breaking up sitting, on sleep architecture during a 9 h or 5 h sleep opportunity. Participants (n = 125, 51% male, 23.4 ± 4.8 years of age) completed an in-laboratory sleep study, with five simulated shifts during the day or night. Sleep opportunities were either 9 h or 5 h following each shift. Participants were allocated to one of six conditions: Sit9D or Break9D (sedentary or breaking up sitting day and 9 h sleep opportunity), Sit5D or Break5D (sedentary or breaking up sitting day and 5 h sleep opportunity), or Sit9N or Break9N (sedentary or breaking up sitting night and 9 h sleep opportunity). Sleep was monitored using polysomnography. In the analysis of day shifts, mixed model ANOVAs demonstrated a significant physical activity *sleep opportunity interaction for total sleep time (p < 0.001), sleep onset latency (p < 0.001), time spent in N2 (p < 0.001) and N3 (p = 0.03). Post-hoc analyses revealed that participants in the 9 h sleep opportunity conditions had longer total sleep time, shorter sleep onset latency, and more slow-wave sleep (N3) during sleep opportunities 1–4 but not sleep opportunity 5. There were no significant differences in sleep architecture between physical activity condition for the nightshift conditions. Better sleep quality was seen in the 9 h condition compared to the 5 h condition, and breaking up sitting did not affect sleep. Given the benefits of breaking up sitting on health, our findings suggest a breaking up sitting intervention can be promoted without detrimental impacts on sleep.
published_date 2025-07-01T05:29:22Z
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