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Psychological strain: Examining the effect of hypoxic bedrest and confinement
KTH, School of Technology and Health (STH), Basic Science and Biomedicine, Environmental Physiology. KTH, School of Technology and Health (STH), Centres, Swedish Aerospace Physiology Centre, SAPC.
2015 (English)In: Physiology and Behavior, ISSN 0031-9384, E-ISSN 1873-507X, Vol. 139, 497-504 p.Article in journal (Refereed) Published
Abstract [en]

The aim was to assess the effect of a 10-day exposure to the environmental stressors anticipated in future lunar habitats on indices of psychological strain. In addition to the reduced gravity of the Moon, future habitats on the Moon will likely maintain a hypobaric hypoxic environment. The hypobaric environment will eliminate the need for long decompression profiles prior to each extra-vehicular activity. We investigated the indices of psychological strain during three 10-day conditions, designed to assess the separate and combined effects of inactivity/unloading and normobaric hypoxia on several physiological systems. Eleven male participants underwent three 10-day campaigns in a randomised manner: 1) normobaric normoxic bed rest (NBR), 2) normobaric hypoxic bed rest (HBR) and 3) normobaric hypoxic ambulatory confinement (HAMB). The most negative psychological profile appeared on day 10 of the HBR and HAMB (hypoxic) conditions. Concomitantly, a decrease in positive emotions was observed from baseline to day 10 of the HBR and NBR conditions. Thus, confinement in a hypoxic environment seems to exert a negative effect on an individual's psychological mood.

Place, publisher, year, edition, pages
2015. Vol. 139, 497-504 p.
Keyword [en]
Bedrest, Hypoxia, Inactivity, Mood, Negative affect, Positive affect, Psychological strain
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URN: urn:nbn:se:kth:diva-159294DOI: 10.1016/j.physbeh.2014.12.015ISI: 000349574400068ScopusID: 2-s2.0-84916623160OAI: diva2:784154

QC 20150211

Available from: 2015-01-28 Created: 2015-01-28 Last updated: 2015-03-23Bibliographically approved

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Eiken, Ola
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Environmental PhysiologySwedish Aerospace Physiology Centre, SAPC
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