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The association between vigour and flexibility with injury and alertness during shift work

Lee Di Milia Orcid Logo, Janet L. Barnes-Farrell Orcid Logo, Rick Laguerre, Simon Folkard Orcid Logo, Simon Folkard

Chronobiology International, Volume: 41, Issue: 12, Pages: 1600 - 1609

Swansea University Author: Simon Folkard

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DOI (Published version): 10.1080/07420528.2024.2431065

Abstract

Models of shift work and health suggest that individual differences in circadian rhythm characteristics may moderate the relationship between night shift work and injury, but this argument has not been directly tested. In this study, we tested the efficacy of two circadian rhythm characteristics—vig...

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Published in: Chronobiology International
ISSN: 0742-0528 1525-6073
Published: Informa UK Limited 2024
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URI: https://cronfa.swan.ac.uk/Record/cronfa68616
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spelling 2024-12-20T14:42:31.0680233 v2 68616 2024-12-20 The association between vigour and flexibility with injury and alertness during shift work 6c54366648a979dfec8d338d85c1d100 Simon Folkard Simon Folkard true false 2024-12-20 Models of shift work and health suggest that individual differences in circadian rhythm characteristics may moderate the relationship between night shift work and injury, but this argument has not been directly tested. In this study, we tested the efficacy of two circadian rhythm characteristics—vigour and flexibility—as moderators of the path between shift work and injury. In addition, we aimed to replicate the association between vigour, flexibility, and alertness by time of day, and the measurement properties of the Circadian Type Inventory. We recruited 401 healthcare workers from Australia and Great Britain. After controlling for confounding variables, the results showed that vigour moderated the association between shift work and injury. Participants with values of vigour at the mean (β = 0.5120, p < 0.0013, 95% CI = [0.2018, 0.8223) and one standard deviation below the mean (β = 0.9048, p < 0.0001, 95% CI = [0.4648, 1.3447] reported significantly more injuries. No moderation was found for flexibility. Significant differences in alertness by time of day were observed in participants with higher levels of vigour compared to lower levels of vigour. No differences in alertness were observed for the flexibility scale. These results indicate that vigour may be a robust indicator of shift work tolerance. We replicated the posited two-factor structure of the Circadian Type Inventory, found the scales to have good reliability, and established for the first time, criterion-related validity for the vigour scale. Journal Article Chronobiology International 41 12 1600 1609 Informa UK Limited 0742-0528 1525-6073 Amplitude; Chronotype; injury; languid; shift work; vigour 1 12 2024 2024-12-01 10.1080/07420528.2024.2431065 COLLEGE NANME COLLEGE CODE Swansea University Not Required The author(s) reported there is no funding associated with the work featured in this article. 2024-12-20T14:42:31.0680233 2024-12-20T14:01:07.2972743 Faculty of Medicine, Health and Life Sciences School of Psychology Lee Di Milia 0000-0001-7681-5589 1 Janet L. Barnes-Farrell 0000-0001-8714-4813 2 Rick Laguerre 3 Simon Folkard 0000-0003-1120-7472 4 Simon Folkard 5
title The association between vigour and flexibility with injury and alertness during shift work
spellingShingle The association between vigour and flexibility with injury and alertness during shift work
Simon Folkard
title_short The association between vigour and flexibility with injury and alertness during shift work
title_full The association between vigour and flexibility with injury and alertness during shift work
title_fullStr The association between vigour and flexibility with injury and alertness during shift work
title_full_unstemmed The association between vigour and flexibility with injury and alertness during shift work
title_sort The association between vigour and flexibility with injury and alertness during shift work
author_id_str_mv 6c54366648a979dfec8d338d85c1d100
author_id_fullname_str_mv 6c54366648a979dfec8d338d85c1d100_***_Simon Folkard
author Simon Folkard
author2 Lee Di Milia
Janet L. Barnes-Farrell
Rick Laguerre
Simon Folkard
Simon Folkard
format Journal article
container_title Chronobiology International
container_volume 41
container_issue 12
container_start_page 1600
publishDate 2024
institution Swansea University
issn 0742-0528
1525-6073
doi_str_mv 10.1080/07420528.2024.2431065
publisher Informa UK Limited
college_str Faculty of Medicine, Health and Life Sciences
hierarchytype
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 0
active_str 0
description Models of shift work and health suggest that individual differences in circadian rhythm characteristics may moderate the relationship between night shift work and injury, but this argument has not been directly tested. In this study, we tested the efficacy of two circadian rhythm characteristics—vigour and flexibility—as moderators of the path between shift work and injury. In addition, we aimed to replicate the association between vigour, flexibility, and alertness by time of day, and the measurement properties of the Circadian Type Inventory. We recruited 401 healthcare workers from Australia and Great Britain. After controlling for confounding variables, the results showed that vigour moderated the association between shift work and injury. Participants with values of vigour at the mean (β = 0.5120, p < 0.0013, 95% CI = [0.2018, 0.8223) and one standard deviation below the mean (β = 0.9048, p < 0.0001, 95% CI = [0.4648, 1.3447] reported significantly more injuries. No moderation was found for flexibility. Significant differences in alertness by time of day were observed in participants with higher levels of vigour compared to lower levels of vigour. No differences in alertness were observed for the flexibility scale. These results indicate that vigour may be a robust indicator of shift work tolerance. We replicated the posited two-factor structure of the Circadian Type Inventory, found the scales to have good reliability, and established for the first time, criterion-related validity for the vigour scale.
published_date 2024-12-01T20:50:00Z
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score 11.048302

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