|Document ID (ISN)||102062|
|ISSN - Serial title
||0300-8134 - Journal of Human Ergology
|Convention or series no.
||Kecklund G., Ekstedt M., ┼kerstedt T., Dahlgren A., Samuelson B.
||The effects of double-shifts (15.5 hours) on sleep, fatigue and health
||Dec. 2001, Vol.30, No.1-2, p.53-58. Illus. 14 ref.
||The aim of this study was to investigate how "double-shifts" (15.5h) affect sleep, fatigue and self-rated health. The study involved 48 male construction workers working during two work periods, with each work period consisting of two consecutive double shifts. The subjects filled in a sleep/wake diary and responded to a questionnaire on several occasions during the course of a year. The results showed that sleepiness, and to a certain extent, mental fatigue, increased during double shifts and accumulated across days. The short rest time (8.5h) between days allowed an insufficient sleep period of approximately 5.5h. 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 well-being.
||shift work; state of health; construction industry; hours of work; sleep
||male workers; symptoms; sleep pattern; mental stress; sleep disturbances; questionnaire survey; fatigue
||D - Periodical articles
|Country / State or Province||Sweden|
|Broad subject area(s)
Construction industry and civil engineering
Hours of work