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The effects of prolonged spaceflight on the regional distribution of fluid, muscle and fat: Biostereometric results from SkylabBiostereometric analysis of body form was performed several times preflight and postflight on the astronauts of all three skylab flights. The analysis was made by deriving the three-dimensional coordinates of numerous points on the body surface from stereoscopic pairs of photographs of the subject, using a stereoplotter. The volume of segments of the body, and of the body as a whole, was calculated by integration of cross sectional areas derived from the coordinate data. All nine astronauts demonstrated regional changes in volume distribution which could be related to changes in total body water, muscle mass, and fat deposits. The change in water resulted from a redistribution of fluid in response to zero gravity. Changes in muscle mass resulted from an alternation in patterns of musclar activity in the absence of gravity, and changes in fat resulted from discrepancies between the individual's caloric needs and his food consumption.
Document ID
19770012794
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Whittle, M. W.
(Royal Aerospace Establishment Farnborough, United Kingdom)
Herron, R. L.
(Texas Inst. for Rehabilitation and Res. Houston, United States)
Cuzzi, J. R.
(Texas Inst. for Rehabilitation and Res. Houston, United States)
Keys, C. W.
(Technology Inc. Houston, United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1977
Publication Information
Publication: AGARD Recent Advances in Space Medicine
Subject Category
Aerospace Medicine
Accession Number
77N19738
Funding Number(s)
CONTRACT_GRANT: NAS9-11604
Distribution Limits
Public
Copyright
Other
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