Abstract
Residents of Magadan oblast with no experience of regular exposure to low ambient temperatures were examined to study the changes in hand skin temperature (HST) as a response to hypoxia. It was found that vasodilative responses followed by an increase in HST were typical of subjects demonstrating a high resistance to hypoxia during a 3-min rebreathing test and when breathing a gas mixture containing 8% O2 and 92% N2 for 14 min. Vasoconstrictor responses and a decrease in HST prevailed in subjects with a low resistance to hypoxia. Hand skin areas differed in the informative value of temperature changes in response to standard hypoxic exposure. Their characteristics may be used to select subjects for work under extreme environmental conditions and as an individual and specific marker of a human ecological portrait.
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