, Volume 39, Issue 6, pp 581–583 | Cite as

Acute heat/exercise stress in rats: Effects on fluid and electrolyte regulatory hormones

  • R. Francesconi
  • M. Mager


Adult, male rats were exercised in the heat until hyperthermic exhaustion ensued. Plasma aldosterone levels were significantly (p<0.001) elevated after 8 min of exercise and remained increased throughout the exercise and recovery periods. Alternatively, plasma angiotensin I levels were unaffected during exercise, but increased significantly (p<0.001) during the recovery period. These rapid elevations in hormonal levels may be part of a sympathicoadrenal response to heat/exercise stress as well as an adaptational response to maintain plama volume during and following exercise in the heat.


Angiotensin Aldosterone Hormonal Level Recovery Period Adaptational Response 
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Copyright information

© Birkhäuser Verlag 1983

Authors and Affiliations

  • R. Francesconi
    • 1
  • M. Mager
    • 1
  1. 1.U.S. Army Research Institute of Environmental MedicineNatickUSA

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