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NASA Technical Reports Server (NTRS) 19940025683: Circadian counter...
by NASA Technical Reports Server (NTRS)
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People who must work at night experience a number of
physiological and psychological difficulties. These
include sleepiness and fatigue at work, poor daytime
sleep, gastrointestinal distress, impaired concentration
and performance, disturbed mood, and increased health
complaints and risk of disease. These difficulties arise
because nocturnal work and daytime sleep take place at
inappropriate phases of the body's circadian rhythms.
Intense artificial light can shift the phase of human
circadian rhythms, and can thus be used to promote
adaptation to shifted work schedules. The first attempts
to investigate the efficacy of light treatment for MSFC
POCC shiftworkers took place during USML-1 and ATLAS-2.
The findings from these studies led to the development of
a Circadian Countermeasures Program that was implemented
during USMP-2. Light treatment and other circadian
countermeasures were employed to promote adjustment to
mission shiftwork in POCC cadre volunteers. Treatment
protocols were designed and customized for each
volunteer's work hours and personal preferences.
Treatment protocols included some or all of the
following: scheduled self-administration of intense
light, scheduled avoidance or attenuation of sunlight at
other times, and sleep schedules. Data from post-mission
questionnaires indicated that volunteers found the
program to be effective, convenient, and beneficial.
Date Published: 2016-10-07 17:12:42
Identifier: NASA_NTRS_Archive_19940025683
Item Size: 45713914
Language: english
Media Type: texts
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