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Circadian adaptation to full-time ni...

James, Francine Olare.

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Circadian adaptation to full-time night shift work with bright light to intervention regimen.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Circadian adaptation to full-time night shift work with bright light to intervention regimen./
Author:	James, Francine Olare.
Description:	83 p.
Notes:	Source: Masters Abstracts International, Volume: 41-01, page: 0153.
Contained By:	Masters Abstracts International41-01.
Subject:	Biology, Neuroscience. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MQ70439
ISBN:	0612704394

Circadian adaptation to full-time night shift work with bright light to intervention regimen.
James, Francine Olare.

Circadian adaptation to full-time night shift work with bright light to intervention regimen. - 83 p.

Source: Masters Abstracts International, Volume: 41-01, page: 0153.

Thesis (M.Sc.)--McGill University (Canada), 2001.

The primary consequence of night shift work is a misalignment of the endogenous circadian pacemaker with the inverted sleep-wake cycle. This study evaluated the efficacy of a judicious schedule of light exposure on circadian adaptation to night work. Fifteen night shift workers (mean age +/-S.E.M.: 41.8 +/- 1.8 years) were studied for 3 weeks in their work environments under one of two experimental conditions. Treatment group participants underwent an intervention including bright light in the workplace, while control group participants were studied in their habitual light environments. The efficacy of the intervention was evaluated in the laboratory via constant routines. Following the intervention, treatment group subjects displayed a mean phase delay of (+/-S.E.M.) -9.32 +/- 1.06 hours and full entrainment to the night-oriented schedule while control group subjects displayed a phase delay -4.09 +/- 1.94 hours and a partial entrainment (F(1,30) = 11.33, p = 0.002). The results of this study suggest a means of alleviating the difficulties associated with night shift work with control of the overall pattern of light exposure.

ISBN: 0612704394Subjects--Topical Terms:

1017680
Biology, Neuroscience.

Circadian adaptation to full-time night shift work with bright light to intervention regimen.
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520 $a The primary consequence of night shift work is a misalignment of the endogenous circadian pacemaker with the inverted sleep-wake cycle. This study evaluated the efficacy of a judicious schedule of light exposure on circadian adaptation to night work. Fifteen night shift workers (mean age +/-S.E.M.: 41.8 +/- 1.8 years) were studied for 3 weeks in their work environments under one of two experimental conditions. Treatment group participants underwent an intervention including bright light in the workplace, while control group participants were studied in their habitual light environments. The efficacy of the intervention was evaluated in the laboratory via constant routines. Following the intervention, treatment group subjects displayed a mean phase delay of (+/-S.E.M.) -9.32 +/- 1.06 hours and full entrainment to the night-oriented schedule while control group subjects displayed a phase delay -4.09 +/- 1.94 hours and a partial entrainment (F(1,30) = 11.33, p = 0.002). The results of this study suggest a means of alleviating the difficulties associated with night shift work with control of the overall pattern of light exposure.
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