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Effect of bed rest and exercise on body balanceA battery of 11 body balance tests was administered to 7 men before and after 14 days of bedrest. Seven men who had not undergone bed rest served as controls. During bed rest, each subject underwent daily either isotonic, isometric, or no leg exercise. The results showed that, for the bed-rested no exercise, isotonic exercise, and isometric exercise groups, 2 weeks of bed rest produces significant body balance decrements on 3, 4, and 5 of the 11 tests, respectively. Daily leg exercise did not prevent the debilitating effects of bed rest on body balance. After bed rest, balance skill was relearned rapidly so that in most tests, performance had reached prebed-rest levels by the third recovery day. These data suggest that balance impairment is not due to loss of muscular strength in the legs but, perhaps, to a bed-rest-related change in the neurally coded information to postural control centers.
Document ID
19740040996
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Haines, R. F.
(NASA Ames Research Center Neurosciences Branch, Moffett Field, Calif., United States)
Date Acquired
August 7, 2013
Publication Date
March 1, 1974
Publication Information
Publication: Journal of Applied Physiology
Volume: 36
Subject Category
Biotechnology
Accession Number
74A23746
Distribution Limits
Public
Copyright
Other

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