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January 1, 1982

Effects of the Sauna-Reply

JAMA. 1982;247(1):28. doi:10.1001/jama.1982.03320260016013

In Reply.—  While I do not have any data on the caloric intake of persons living in tropical zones, Guyton1 points out that the basal metabolic rate of those living in tropical zones is substantially less than that of those living in colder climates, owing in part to decreased thyroxine secretion.The effects of a sauna can probably be much better determined by studying persons exposed to a sauna, rather than comparing the caloric consumption of persons residing in different climatological zones. Using whole-body gradient calorimetry Benzinger2 found that a dramatic increase in metabolic rate occurred as the core temperature was increased. Also, Kleiber3 shows that at temperatures greater than 37 °C, there is a steep increase in metabolic rate.In a study to determine the effectiveness of a sauna as a conditioning device, Pribil and Matousek4 found that after seven weeks of only two sauna