Journal article

Sleepiness and driving events in shift workers: the impact of circadian and homeostatic factors

Megan D Mulhall, Tracey L Sletten, Michelle Magee, Julia E Stone, Saranea Ganesan, Allison Collins, Clare Anderson, Steven W Lockley, Mark E Howard, Shantha MW Rajaratnam

SLEEP | OXFORD UNIV PRESS INC | Published : 2019


We aimed to characterize objective and subjective sleepiness and driving events during short work commutes and examine the impact of circadian and homeostatic factors across different shift types in a shift worker population. Thirty-three nurses were monitored for 2 weeks over day (07:00-15:30), evening (13:00-21:30), and night shifts (21:00-07:30). Sleep was measured via daily sleep logs and wrist actigraphy. Driving logs were completed for each work commute, reporting driving events and a predrive Karolinska Sleepiness Scale (KSS). Ocular data from a subset of participants (n = 11) assessed objective sleepiness using infrared oculography during commutes. Circadian phase was assessed at thr..

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