Comparison of Blood Volume During Physical Conditioning, Heat Acclimatization and Sedentary Living

Abstract

After 6 weeks of sedentary activity, 15 healthy young men were separated into three equal groups. During the following 3 weeks one group continued sedentary; another group was physically conditioned; the third group was simultaneously physically conditioned and acclimatized to heat. Plasma volumes (T-1824) were determined for all men before and after the 3-week period. It was found that plasma, blood and circulating red cell volumes were not altered by physical conditioning or by a combination of physical conditioning and heat acclimatization. The volumes for all three groups did not change during the 3-week experimental period. Submitted on September 3, 1957