MODELING PREDICTION OF HUMAN THERMAL RESPONSES IN WARM WATER
DOI:
https://doi.org/10.11603/mie.1996-1960.2021.1.12190Abstract
Background. This paper describes the mathematical model for human thermoregulation in warm water and demonstrates results for impact of warm water immersion in man during resting conditions and exercises. The purpose of the work is to describe a mathematical model of human thermoregulation in warm water and demonstrate the effects of immersion in warm water on a person under conditions of rest and exercise.
Materials and methods. Model is realized as friendly user computer simulator. The model makes prediction based on the human data, metabolic rate, environmental conditions and clothing biophysics.
Results. Modeling resulted in the conclusion that human immersion in warm water is the rapid time process demanding severe control. Comparison of modeling results with measurements in volunteers approved these data. It was demonstrated that dynamics of human heating is highly sensitive to residence time in water. Model predicted main significant effect of human exercises on thermoregulatory responses and human temperatures in different warm water. Physical activity in warm water accelerates the time processes and gains human heating. Additional metabolic heat producing during performance in warm water elevates core temperature significantly.
Conclusions. Modeling showed that steady state depends on human time in water. During short time of immersion even at high water temperature it could be no danger of human overheating, however as human stays in water the danger of overheating become critical.
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