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Polycythemia and hydration: effects on thermoregulation and blood volume during exercise-heat stress

Polycythemia and hydration: effects on thermoregulation and blood volume during exercise-heat stress METHODS we reported that acute tended to reduce body heat storage during exercise in a hot environment for euhydrated but non-heat-acclimated human subjects (16). infused with an autologous erythrocyte-saline solution, those subjects had a reduced plasma volume so that they maintained the same blood volume as during the preinfusion measurements RECENTLY, R456 Subjects. Five male volunteers participated in this investigation. They gave their voluntary and informed consent to participate in this investigation, which had received approval by the appropriate Institutional Review Boards. Investigators adhered to AR 70-25 and United States Army Research and Development Com- AND AND R457 mand Regulation 70-25 on Use of Volunteers in Research. The subjects had a mean age of 33 t 2 (SD) yr, weight of 86 & 13 kg, surface area-to-mass ratio of 234 + 14 cm’/kg, and percent body fat of 20 t 5. - Protocol. During the spring to summer months, 2 U of blood were removed by phlebotomy from each subject. A minimum of 6 wk separated the removal of each unit of blood. During the subsequent fall to early winter months, the experimental portion of the study was completed. Initially, the subjects were familiarized with the test procedures, http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png AJP - Regulatory, Integrative and Comparative Physiology The American Physiological Society

Polycythemia and hydration: effects on thermoregulation and blood volume during exercise-heat stress

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Publisher
The American Physiological Society
Copyright
Copyright © 1988 the American Physiological Society
ISSN
0363-6119
eISSN
1522-1490
Publisher site
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Abstract

METHODS we reported that acute tended to reduce body heat storage during exercise in a hot environment for euhydrated but non-heat-acclimated human subjects (16). infused with an autologous erythrocyte-saline solution, those subjects had a reduced plasma volume so that they maintained the same blood volume as during the preinfusion measurements RECENTLY, R456 Subjects. Five male volunteers participated in this investigation. They gave their voluntary and informed consent to participate in this investigation, which had received approval by the appropriate Institutional Review Boards. Investigators adhered to AR 70-25 and United States Army Research and Development Com- AND AND R457 mand Regulation 70-25 on Use of Volunteers in Research. The subjects had a mean age of 33 t 2 (SD) yr, weight of 86 & 13 kg, surface area-to-mass ratio of 234 + 14 cm’/kg, and percent body fat of 20 t 5. - Protocol. During the spring to summer months, 2 U of blood were removed by phlebotomy from each subject. A minimum of 6 wk separated the removal of each unit of blood. During the subsequent fall to early winter months, the experimental portion of the study was completed. Initially, the subjects were familiarized with the test procedures,

Journal

AJP - Regulatory, Integrative and Comparative Physiology – The American Physiological Society

Published: Sep 1, 1988

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