The problem of the acclimatization of man to heat and cold is an ancient one. However, it has attracted the most attention in the years during and since World War II for military and economic reasons. Two questions arise: First, is a subject already living in an extreme climate more efficient than a subject coming to it from a temperate climate (natural acclimatization)? Second, if acclimatization exists, is it possible to produce it experimentally? This would prepare a subject from a temperate climate to adapt immediately on arrival (artificial acclimatization). Before answering these questions the concept of acclimatization and the word itself must be defined.
KeywordsCold Stress Cold Acclimatization Central Temperature Sweat Gland Heat Acclimatization
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