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Heat Acclimation and Water-Immersion Deconditioning: Responses to ExerciseSimulated subgravity conditions, such as bed rest and water immersion, cause a decrease in a acceleration tolerance (3, 4), tilt tolerance (3, 9, 10), work capacity (5, 7), and plasma volume (1, 8-10). Moderate exercise training performed during bed rest (4) and prior to water immersion (5) provides some protection against the adverse effects of deconditioning, but the relationship between exercise and changes due to deconditioning remains unclear. Heat acclimation increases plasma and interstitial volumes, total body water, stroke volume (11), and tilt tolerance (6) and may, therefore, be a more efficient method of ameliorating deconditioning than physical training alone. The present study was undertaken to determine the effects of heat acclimation and moderate physical training, performed in cool conditions, on water-immersion deconditioning.
Document ID
19990054338
Document Type
Reprint (Version printed in journal)
Authors
Shvartz, E. (NASA Ames Research Center Moffett Field, CA United States)
Bhattacharya, A. (NASA Ames Research Center Moffett Field, CA United States)
Sperinde, S. J. (NASA Ames Research Center Moffett Field, CA United States)
Brock, P. J. (NASA Ames Research Center Moffett Field, CA United States)
Sciaraffa, D. (NASA Ames Research Center Moffett Field, CA United States)
Haines, R. F. (NASA Ames Research Center Moffett Field, CA United States)
Greenleaf, J. E. (NASA Ames Research Center Moffett Field, CA United States)
Date Acquired
August 19, 2013
Publication Date
January 1, 1977
Publication Information
Publication: Aerospace Medical Association Preprints
Subject Category
Aerospace Medicine
Distribution Limits
Public
Copyright
Other