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The effects of double-shifts (15.5 hours) on sleep, fatigue and health.
Psykologiska Institutionen, Stockholms universitet. (Stress research institute)
Ersta Sköndal University College, Department of Health Care Sciences.
Psykologiska Institutionen, Stockholms universitet. (Stress research institute)
School of tecnic and health, KTH. (eneheten för patientsäkerhet)
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2001 (English)In: Journal of human ergology, ISSN 0300-8134, Vol. 30, no 1-2, 53-8 p.Article in journal (Refereed) Published
Abstract [en]

The aim of the present study was to investigate how "double-shifts" (15.5 hours) affects sleep, fatigue and self-rated health. The study was carried out on male construction workers of which 80% were long-distance commuters. The schedule involved two work periods and each work period involved two double shifts in a row. The subjects filled in a sleep/wake diary at 8 times across a year and a questionnaire at 3 times. They also wore an actigraph during one shift cycle. The results showed that sleepiness, and to a certain extent, mental fatigue increased during double shifts and accumulated across days. The short rest time (8.5 hours) between days caused insufficient sleep and approximately 5.5 hours of sleep was obtained between double shifts. Questionnaire data showed that complaints of insufficient sleep, exhaustion on awakening and pain symptoms increased across the year. It was concluded that a shift system involving double shifts has a negative effect on fatigue, recovery and health-related well-being.

Place, publisher, year, edition, pages
2001. Vol. 30, no 1-2, 53-8 p.
Identifiers
URN: urn:nbn:se:esh:diva-1268PubMedID: 14564858OAI: oai:DiVA.org:esh-1268DiVA: diva2:435828
Available from: 2011-08-20 Created: 2011-08-20 Last updated: 2011-08-22Bibliographically approved

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