| Energy absorption, lean body mass, and total body fat changes during 5 weeks of continuous bed rest. | |
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MedLine Citation:
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PMID: 2339966 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Inactivity causes profound changes. We determined the nature of the body composition changes due to inactivity, and sought to determine if these changes are secondary to changes in energy absorption. Volunteers were 15 healthy males who lived on a metabolic research ward under close staff supervision for 11 weeks. Subjects were ambulatory during the first 6 weeks and remained in continuous bed rest for the last 5 weeks of the study. Six male volunteers (age 24-61 years, height 175.7 +/- 4.2 cm) were selected for body composition measurements. Nine different male volunteers (age 21-50 years, height 177.7 +/- 5.0 cm) were selected for energy absorption measurements. The volunteers were fed weighed conventional foods on a constant 7-d rotation menu. The average daily caloric content was 2,592 kcal. Comparing the 5 weeks of continuous bed rest with the previous 6 weeks of ambulation we observed: no change in energy absorption or total body weight during bed rest, but a significant decrease in lean body mass and a significant increase in total body fat (p less than 0.05). |
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Authors:
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J M Krebs; V S Schneider; H Evans; M C Kuo; A D LeBlanc |
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Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: Aviation, space, and environmental medicine Volume: 61 ISSN: 0095-6562 ISO Abbreviation: Aviat Space Environ Med Publication Date: 1990 Apr |
Date Detail:
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Created Date: 1990-06-21 Completed Date: 1990-06-21 Revised Date: 2007-11-14 |
Medline Journal Info:
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Nlm Unique ID: 7501714 Medline TA: Aviat Space Environ Med Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 314-8 Citation Subset: IM; S |
Affiliation:
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Krug International, NASA-Johnson Space Center, Houston, TX 77058. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adipose Tissue
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anatomy & histology* Adult Bed Rest* Body Composition* Body Mass Index Energy Intake / physiology Energy Metabolism* Humans Male Middle Aged Space Flight Time Factors Weightlessness |
| Grant Support | |
ID/Acronym/Agency:
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RR00350/RR/NCRR NIH HHS; RR02558/RR/NCRR NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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