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Plasma renin activity (PRA), angiotensin II, and aldosterone levels, arterial blood pressure, and heart rate of six male students were investigated during and after heat stress in a sauna bath. Increased PRA, angiotensin II, and aldosterone levels were found both during and after sauna. The greatest mean increases in PRA (94.9 +/- 10.4% SE, P less than 0.005) and angiotensin II (196 +/- 54.7% SE, P less than 0.02) were observed at the end of the heat stress (at 20 min), and that in plasma aldosterone (505 +/- 209% SE, P less than 0.02) 30 min after the sauna. The heart rate roughly doubled during the heat stress and there was a transient increase followed by a decrease in systolic blood pressure and a decrease in diastolic blood pressure. This study demonstrates that intense heat stress can cause remarkable changes in the three main components of the renin-angiotensin-aldosterone system.
K J Kosunen, and
A J Pakarinen, and
K Kuoppasalmi, and
H Adlercreutz
February 1989,
International journal of sports medicine,
K J Kosunen, and
A J Pakarinen, and
K Kuoppasalmi, and
H Adlercreutz
September 1977,
Scandinavian journal of clinical and laboratory investigation,
K J Kosunen, and
A J Pakarinen, and
K Kuoppasalmi, and
H Adlercreutz
April 1977,
Scandinavian journal of clinical and laboratory investigation,
K J Kosunen, and
A J Pakarinen, and
K Kuoppasalmi, and
H Adlercreutz
December 1977,
Annals of clinical research,
K J Kosunen, and
A J Pakarinen, and
K Kuoppasalmi, and
H Adlercreutz
January 1973,
Verhandlungen der Deutschen Gesellschaft fur Innere Medizin,
K J Kosunen, and
A J Pakarinen, and
K Kuoppasalmi, and
H Adlercreutz
February 1984,
Nihon Jinzo Gakkai shi,
K J Kosunen, and
A J Pakarinen, and
K Kuoppasalmi, and
H Adlercreutz
January 1979,
Acta medica Scandinavica,
K J Kosunen, and
A J Pakarinen, and
K Kuoppasalmi, and
H Adlercreutz
February 1973,
Lancet (London, England),
K J Kosunen, and
A J Pakarinen, and
K Kuoppasalmi, and
H Adlercreutz
December 1983,
Journal of applied physiology: respiratory, environmental and exercise physiology,
K J Kosunen, and
A J Pakarinen, and
K Kuoppasalmi, and
H Adlercreutz
June 1975,
Clinical science and molecular medicine. Supplement,
