Exercise Training: Blood Pressure Responses in Subjects Adapted to Microgravity

Paper #:
  • 911458

Published:
  • 1991-07-01
Citation:
Convertino, V., "Exercise Training: Blood Pressure Responses in Subjects Adapted to Microgravity," SAE Technical Paper 911458, 1991, https://doi.org/10.4271/911458.
Pages:
9
Abstract:
Conventional endurance exercise training that involves daily workouts of 1-2 hr duration during exposure to microgravity has not proven completely effective in ameliorating post-exposure orthostatic hypotension. Single bouts of intense exercise have been shown to increase plasma volume and baroreflex sensitivity in ambulatory subjects through 24 hr postexercise and to reverse decrements in maximal oxygen uptake and syncopal episodes following exposure to simulated microgravity. These physiological adaptations to acute intense exercise were opposite to those observed following exposure to microgravity. These results suggest that the ‘exercise training’ stimulus used to prevent orthostatic hypotension induced by microgravity may be specific and should be redefined to include single bouts of maximal exercise which may provide an acute effective countermeasure against postflight hypotension.
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