MILAN 



(1) An increased ability to draw upon body heat stores. 



(2) Vascular changes in the hands and feet in order to maintain 

 warmer extremities. 



(3) A diminution of shivering, a moderate cold stress possibly 

 related to what Eisner (1960) has termed "habituation." 



(4) A transient elevation of the BMR, resulting from an ability 

 to shiver while sleeping. 



Native peoples investigated are either naked or thinly clad 

 exposed to moderatecold — the Australians, Bushmen, and Alacalufs, 

 or heavily clothed exposed to extreme cold — Lapps, Eskimos, and 

 Arctic Athapascans. 



These cold adapted peoples show: 



(1) A form of insulative cooling with a decreased tissue con- 

 ductance. 



(2) A metabolic sparing with the ability to draw upon body heat 

 stores. 



(3) An elevated basal metabolic rate. 



(4) A decreased perception of cold sensation. 



(5) An increased peripheral blood flow. 



This then brings us to a recent study done in collaboration 

 with Drs. Hannon and Evonuk. 



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