[Temperature effect of muscle work in white rats during hypoxia].

During the hypoxia muscular work revealed an augmented electrical activity of the working muscles, a lesser increase in their and body's temperature. Rats adapted to hypoxia developed a higher level of muscular activity and a lesser increase of temperature indices. This suggests that hypoxia and adaptation to hypoxia decrease thermoregulatory effects of arbitrary activity of skeletal muscles. The additional thermogenesis formed during the muscular work seems to be depressed during hypoxia.