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Bone demineralizationCrew members of the Gemini 4, Gemini 5, and Gemini 7 missions were compared regarding skeletal changes in three major anatomic sites with respect to changes in skeletal density during space flight. Bone-mass changes have been found for the command pilot and the pilot of each mission in the conventional os calcis section, in the combined sections covering 60 percent of the os calcis, and in hand phalanges 5-2 and 4-2. Comparison of radiographically determined losses in X-ray absorbence with X-ray absorbence losses in healthy young men subjected to bedrest immobilization for the same length of time showed that losses for the crewmembers exceeded losses for the bedrest subjects in all cases; this was an indication that restriction of body movement did not represent the only factor involved.
Document ID
19720006407
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Mack, P. B.
(Texas Womens Univ. Research Inst. Denton, TX, United States)
Vose, G. P.
(Texas Womens Univ. Research Inst. Denton, TX, United States)
Vogt, F. B.
(Tex. Inst. for Rehabil. and Res. Houston, Tex., United States)
Lachance, P. A.
(NASA Manned Spacecraft Center)
Date Acquired
August 6, 2013
Publication Date
September 1, 1971
Publication Information
Publication: NASA. Manned Spacecraft Center The Gemini Program Biomed. Sci. Expt. Sum.
Subject Category
Biosciences
Report/Patent Number
EXPT-M006
Accession Number
72N14056
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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