Examining courses of sleep quality and sleepiness in full 2 weeks on/2 weeks off offshore day shift rotations

Chronobiology International
Vanessa RiethmeisterSandra Brouwer

Abstract

To better understand sleep quality and sleepiness problems offshore, we examined courses of sleep quality and sleepiness in full 2-weeks on/2-weeks off offshore day shift rotations by comparing pre-offshore (1 week), offshore (2 weeks) and post-offshore (1 week) work periods. A longitudinal observational study was conducted among N=42 offshore workers. Sleep quality was measured subjectively with two daily questions and objectively with actigraphy, measuring: time in bed (TIB), total sleep time (TST), sleep latency (SL) and sleep efficiency percentage (SE%). Sleepiness was measured twice a day (morning and evening) with the Karolinska Sleepiness Scale. Changes in sleep and sleepiness parameters during the pre/post and offshore work periods were investigated using (generalized) linear mixed models. In the pre-offshore work period, courses of SE% significantly decreased (p=.038). During offshore work periods, the courses of evening sleepiness scores significantly increased (p<.001) and significantly decreased during post-offshore work periods (p=.004). During offshore work periods, TIB (p<.001) and TST (p<.001) were significantly shorter, SE% was significantly higher (p=.002), perceived sleep quality was significantly lower (p<.0...Continue Reading

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Citations

Jul 20, 2018·Chronobiology International·Gregory D RoachFrida Marina Fischer
Sep 14, 2020·Risk Analysis : an Official Publication of the Society for Risk Analysis·Wen-Chin LiGraham Braithwaite
Sep 12, 2020·International Journal of Nursing Studies·Jane GifkinsAshlea Troth
Nov 15, 2021·American Journal of Industrial Medicine·Kyla Hagan-HaynesVanessa Riethmeister

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