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Determination of muscle mass changes in legs from K-40 measurementsThe K-40 content of the upper legs was periodically measured in several subjects whose injured legs had been in a cast for 6 weeks or more. As the subjects began using the leg again, the K-40 content increased as the muscle tissue was replaced. A 25% increase in K-40 content in 6 months is typical for a normal leg use and recovery. This is equivalent to an original muscle mass loss of 20%. By measuring specific body regions, such as arms or legs, with a high-efficiency detector system, muscle mass changes which exceed a few percent can be measured. These methods could be used in space flight and bedrest studies, and in studying nutritional deficiencies due to disease or diet.
Document ID
19790065984
Document Type
Reprint (Version printed in journal)
Authors
Palmer, H. E.
(Battelle Pacific Northwest Labs. Richland, WA, United States)
Rieksts, G. A.
(Battelle Pacific Northwest Laboratories Richland, Wash., United States)
Date Acquired
August 9, 2013
Publication Date
September 1, 1979
Subject Category
Aerospace Medicine
Accession Number
79A49997
Funding Number(s)
CONTRACT_GRANT: NAS9-14248
Distribution Limits
Public
Copyright
Other

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