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Sleep and Circadian Rhythm During a Short Space Mission

Gundel, A. and Nalishiti, V. (1) and Reucher, E. and Vejvoda, M. and Zulley, J. (2) (1993) Sleep and Circadian Rhythm During a Short Space Mission. The Clinical Investigator, 71, pp. 718-724. Springer International, Heidelberg.

Full text not available from this repository.

Abstract

An experiment was conducted to assess sleep and circadian regulation in an orbiting spacecraft. In orbit, the weakened influence of 24-h zeitgebers could result in delayed circadian phases with the possibility of a transition to fee-running circadian rhythms. This and the specific stressors of a space mission may lead to changes in ultradian sleep regulation and in reduced sleep quantity and quality.During the mission, sleep was recorded polygrahically on tape, as was body temperature. Daytime alertness was rated subjectively by a mood questionnaire. For comparison, the same parameters were measured during a baseline period preceding the space mission. The circadian rhythms of body temperature and alertness were found to be delayed in space compared to baseline. this may mark a phase shift or the transition to a circadian state offree-run. Sleep was shorter and more disturbed. The structure of sleep was significantly altered. In space, REM latency was shorter, there was less REM sleep in the second non-REM/REM cycle, and slow- wave sleep was redistributed from the first to the second cycle. The self-assessed mood resembled sleep disturbances and adaptation tothe space environment. Reduced sleep quality and quantity are likely to result in fatigue and lower daytime performance. Countermeasures should be adopted to improve sleep of astronauts.

Item URL in elib:https://elib.dlr.de/26875/
Document Type:Article
Additional Information: LIDO-Berichtsjahr=1993, pages=7,
Title:Sleep and Circadian Rhythm During a Short Space Mission
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Gundel, A.UNSPECIFIEDUNSPECIFIED
Nalishiti, V. (1)UNSPECIFIEDUNSPECIFIED
Reucher, E.UNSPECIFIEDUNSPECIFIED
Vejvoda, M.UNSPECIFIEDUNSPECIFIED
Zulley, J. (2)UNSPECIFIEDUNSPECIFIED
Date:1993
Journal or Publication Title:The Clinical Investigator
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:Yes
Volume:71
Page Range:pp. 718-724
Publisher:Springer International, Heidelberg
Status:Published
Keywords:Sleep regulation, body temperature, circadian rhythm, mood, space mission
HGF - Research field:UNSPECIFIED
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:UNSPECIFIED
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):UNSPECIFIED
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine
Deposited By: DLR-Beauftragter, elib
Deposited On:02 Apr 2006
Last Modified:27 Apr 2009 06:23

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