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Document ID (ISN)112406
CIS number 12-0164
ISSN - Serial title 0355-3140 - Scandinavian Journal of Work, Environment and Health
Year 2011
Convention or series no.
Author(s) Kubo T., Takahashi M., Sato T., Sasaki T., Oka T., Iwasaki K.
Title Weekend sleep intervention for workers with habitually short sleep periods
Bibliographic information Sep. 2011, Vol.37, No.5, p.418-426. Illus. 35 ref.
Internet access Weekend_sleep_intervention_[BUY_THIS_ARTICLE] [in English]
ILO_LABORDOC_[INTRANET_ACCESS] [in English]
Abstract This study was conducted to determine whether extended sleep time during the weekend improves alertness and performance during the subsequent week for workers who are habitually short on sleep time. Daytime employees in the manufacturing industry with mean weekday sleep ┐6 hours participated in a study that lasted three successive weeks. Participants were instructed to stay in bed for eight hours or more between 22:00 to 09:00 hours on weekends during the first week as a sleep intervention condition and keep their habitual sleep-wake patterns as a habitual weekend sleep condition beginning the weekend of the second week through Thursday of the third week. Half the participants underwent the conditions in one order and the other half in the reverse. Sleep was monitored by an actigraph. A psychomotor vigilance task, subjective fatigue and blood pressure were measured on Monday and Thursday during the afternoon each week. Sleep duration on weekends was approximately two hours longer per day during the intervention. However, sleep duration during weekdays following the intervention returned to shorter periods. Significantly shorter reaction times and a smaller number of lapses on the psychomotor vigilance task were found on Mondays after the intervention than after the habitual weekend sleep. The opposite results, however, were observed on Thursdays. Sleep extension on weekends may be effective in improving alertness and performance during the first days in subsequent weeks among workers with short sleep times. These benefits might be maintained if sufficient sleep duration continues.
Descriptors (primary) Japan; work efficiency; sleep pattern; health programmes
Descriptors (secondary) electrical equipment; blood pressure; cognitive performance; fatigue; vigilance; programme evaluation; statistical evaluation
Document type D - Periodical articles
Subject(s) Occupational physiology
Occupational pathology
Broad subject area(s) Occupational medicine, epidemiology
Physiology, ergonomics
Browse category(ies) Hours of work
Fatigue
Vigilance