Abstract
DURING investigations of artificial acclimatization to heat on three physically fit subjects, the usual changes in sweat rates, rectal temperatures and pulse rates were not observed. The acclimatization procedure consisted of five 2-h walks on an every-other-day sequence. The daily protocol was 50 min walking at 6.4 km/h on a level treadmill and 10 min rest each hour. The environmental conditions were dry bulb weight = 49° C, wet bulb weight = 28° C, and globe temperature = 49° C. Comparing the results of walk 1 with walk 5, the average pulse rate decreased 1 beat/min; the sweat rate decreased 66 g/h, and the rectal temperature decreased 0.3° C.
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GREENLEAF, J. Lack of Artificial Acclimatization to Heat in Physically Fit Subjects. Nature 203, 1072 (1964). https://doi.org/10.1038/2031072a0
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DOI: https://doi.org/10.1038/2031072a0
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