[Prevention of health status impairment in children under conditions of the Extreme North].

Under the influence of climatic and geographic conditions of the Arctic, 7-9-year-old children develop some functional tension, as evidenced by studies of their thermal reactions and cardiorespiratory system. Ethnic thermoregulatory features were found, which involved retained sensations of thermal comfort at lower skin temperatures and a higher gradient of skin temperatures in the trunk and extremities. In the morbidity pattern of young school-children, there is a prevalence of acute and chronic respiratory diseases whose major causes are cooling and recooling. The findings suggest that there is a causality of the children's health status and the environmental factors and show it necessary to develop scientifically substantiated preventive and conditioning measures to promote children's health.