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The effects of double-shifts (15.5 hours) on sleep, fatigue and health.
Karolinska Institutet. (National Institute of Psychosocial Factors and Health)
Karolinska Institutet. (National Institute of Psychosocial Factors and Health)
Karolinska Institutet. (National Institute of Psychosocial Factors and Health)
Karolinska Institutet. (National Institute of Psychosocial Factors and Health)
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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.
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:kth:diva-87249PubMedID: 14564858OAI: oai:DiVA.org:kth-87249DiVA: diva2:501566
Note

QCR 20160526

Available from: 2012-02-14 Created: 2012-02-14 Last updated: 2016-05-26Bibliographically approved

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