[The individual measuring of the health-promoting impact of the sauna on preschoolers].

The paper deals with the role of individual grading of heat loading when preschool children take a sauna. The adaptative reserves of the child's body were determined by thermal imaging just during exposure in the thermal chamber. The time course of the maximum skin temperature, which was determined by a thermal imaging computer, was used as an informative indicator. The degree of adaptative reserve exhaustion was calculated by approaching to the extreme (maximum) temperature, by the degree reduction in the efficiency of heat emission through diaphoresis and by the rate of maximum skin temperature changes. There were great differences in the adaptative reserves during thermal procedures in children of the same age. The ways of reliable instrumental management were found by grading thermal procedures.