Sleep and sleepiness in shift-working tram drivers

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http://hdl.handle.net/10138/333354

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Onninen , J , Hakola , T , Puttonen , S , Tolvanen , A , Virkkala , J & Sallinen , M 2020 , ' Sleep and sleepiness in shift-working tram drivers ' , Applied Ergonomics , vol. 88 , 103153 . https://doi.org/10.1016/j.apergo.2020.103153

Title: Sleep and sleepiness in shift-working tram drivers
Author: Onninen, Jussi; Hakola, Tarja; Puttonen, Sampsa; Tolvanen, Asko; Virkkala, Jussi; Sallinen, Mikael
Contributor: University of Helsinki, HUS Neurocenter
Date: 2020-10
Language: eng
Number of pages: 8
Belongs to series: Applied Ergonomics
ISSN: 0003-6870
URI: http://hdl.handle.net/10138/333354
Abstract: Driver sleepiness contributes to traffic accidents. However, sleepiness in urban public transport remains an understudied subject. To fill this gap, we examined the sleepiness, sleep, and on-duty sleepiness countermeasures (SCMs) in 23 tram drivers working morning, day, and evening shifts for three weeks. Sleepiness was measured using Karolinska Sleepiness Scale (KSS). Nocturnal total sleep time (TST) was measured with wrist actigraphy. SCMs and naps were self-reported with a smartphone application. Caffeine and napping were considered effective SCMs. Severe sleepiness (KSS >= 7) was observed in 22% of shifts with no differences between shift types. Rest breaks were associated with slight reductions in sleepiness. TST between days off averaged 7 h but was 1 h 33 min and 38 min shorter prior to morning and day shifts, respectively. The use of effective SCMs showed little variance between shift types. These results highlight the need for fatigue management in non-night-working tram drivers.
Subject: Sleep loss
Urban transportation
Driver fatigue
INDIVIDUAL-DIFFERENCES
FATIGUE
HAUL
COUNTERMEASURES
CAFFEINE
RISK
REST
ROAD
3142 Public health care science, environmental and occupational health
515 Psychology
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