Time-of-day and days-on-shift predict increased fatigue over two-week offshore day-shifts

V Riethmeister, R W Matthews, D Dawson, M R de Boer, S Brouwer, U Bültmann

Research output: Contribution to journalArticleAcademicpeer-review

4 Citations (Scopus)

Abstract

Objectives: The purpose of this study was to investigate the accumulation of fatigue over a two-week offshore period. In particular, the effects of (1) time-of-day and days-on-shift as well as (2) acute and chronic sleep loss on the rate at which fatigue accumulates were investigated.

Methods: 42 day-shift offshore workers were examined. Fatigue was measured using pre- and post-shift scores on the Karolinska Sleepiness Scale (KSS). Total sleep time was measured using actigraphy (Motionwatch8, Camntech). Data was analyzed using a linear mixed model analyses.

Results: Average sleep loss per night was 92 min (95%CI: 89.6-94.0; p

Conclusions: Pre- and post-shift fatigue accumulate in different ways over the two-week offshore period. The accumulation of post-shift fatigue scores was positively related to successive days-on-shift and chronic sleep loss. Our results suggest that prolonging offshore periods will likely result in elevated fatigue risk. Accumulating fatigue and sleep loss over two-week offshore periods should be considered in fatigue risk management plans and systems.

Original languageEnglish
Pages (from-to)157-163
Number of pages7
JournalApplied Ergonomics
Volume78
DOIs
Publication statusPublished - Jul-2019

Keywords

  • Fatigue risk management
  • Occupational health
  • Occupational safety
  • Sleep
  • Sleepiness
  • SLEEP RESTRICTION
  • OBJECTIVE SLEEPINESS
  • DAYTIME SLEEPINESS
  • EXTENDED WAKE
  • WORK
  • PERFORMANCE
  • PATTERNS
  • QUALITY
  • WAKEFULNESS
  • INDUSTRY

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