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Effect of simulated weightlessness on energy metabolism in the ratResults of measurements of food uptake and body weight changes occurring in rats suspended from a harness so that the antigravity muscles were not used for locomotion are presented. The rats were tested in pairs, with both in a harness but only one suspended off its hind legs; this section lasted 7 days. A second phase of the experiment involved feeding the nonsuspended rat the same amount of food the experimental rat had consumed the previous day. All rats experienced decreased in body weight and food intake in the first stage, while in the second stage the suspended rat lost more weight. The total oxygen uptake, CO2 output, and rate of C-14O2 production were depressed in the suspended rats, then returned to normal levels once the rats were back on the ground. It is concluded that the gross metabolic processes are unaffected by simulated weightlessness.
Document ID
19820057142
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Jordan, J. P.
(Colorado State Univ. Fort Collins, CO, United States)
Sykes, H. A.
(Colorado State Univ. Fort Collins, CO, United States)
Crownover, J. C.
(Colorado State Univ. Fort Collins, CO, United States)
Schatte, C. L.
(Colorado State Univ. Fort Collins, CO, United States)
Simmons, J. B., II
(Colorado State Univ. Fort Collins, CO, United States)
Jordan, D. P.
(Colorado State University Fort Collins, CO, United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1982
Publication Information
Publication: p. S-69
Subject Category
Life Sciences (General)
Accession Number
82A40677
Funding Number(s)
CONTRACT_GRANT: NSG-2232
Distribution Limits
Public
Copyright
Other

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