| Light treatment for sleep disorders: consensus report. VI. Shift work. | |
MedLine Citation:
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PMID: 7632989 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The unhealthy symptoms and many deleterious consequences of shift work can be explained by a mismatch between the work-sleep schedule and the internal circadian rhythms. This mismatch occurs because the 24-h zeitgebers, such as the natural light-dark cycle, keep the circadian rhythms from phase shifting to align with the night-work, day-sleep schedule. This is a review of studies in which the sleep schedule is shifted several hours, as in shift work, and bright light is used to try to phase shift circadian rhythms. Phase shifts can be produced in laboratory studies, when subjects are kept indoors, and faster phase shifting occurs with appropriately timed bright light than with ordinary indoor (dim) light. Bright light field studies, in which subjects live at home, show that the use of artificial nocturnal bright light combined with enforced daytime dark (sleep) periods can phase shift circadian rhythms despite exposure to the conflicting 24-h zeitgebers. So far, the only studies on the use of bright light for real shift workers have been conducted at National Aeronautics and Space Administration (NASA). In general, the bright light studies support the idea that the control of light and dark can be used to overcome many of the problems of shift work. However, despite ongoing practical applications (such as at NASA), much basic research is still needed. |
Authors:
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C I Eastman; Z Boulos; M Terman; S S Campbell; D J Dijk; A J Lewy |
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Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, P.H.S.; Review |
Journal Detail:
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Title: Journal of biological rhythms Volume: 10 ISSN: 0748-7304 ISO Abbreviation: J. Biol. Rhythms Publication Date: 1995 Jun |
Date Detail:
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Created Date: 1995-09-11 Completed Date: 1995-09-11 Revised Date: 2007-11-14 |
Medline Journal Info:
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Nlm Unique ID: 8700115 Medline TA: J Biol Rhythms Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 157-64 Citation Subset: IM; S |
Affiliation:
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Biological Rhythms Research Laboratory, Rush-Presbyterian-St. Luke's Medical Center, Chicago, IL 60612, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Circadian Rhythm Humans Phototherapy* Sleep Disorders / therapy* United States United States National Aeronautics and Space Administration Work* Work Schedule Tolerance* |
| Grant Support | |
ID/Acronym/Agency:
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NS-23421/NS/NINDS NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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