Predicting Temperature Changes During Cold Water Immersion and Exercise Scenarios: Application of a Tissue-Blood Interactive Whole-Body Model

摘要

A whole-body model with tissue-blood interaction was simulated to predict (1) cooling during cold water immersion of the human body in water temperatures of 18.5 degrees C, 10 degrees C, and 0 degrees C and (2) heating of the human body at walking intensities of 0.9, 1.2, and 1.8m/s for 30min. The transient responses of body and blood temperature were obtained by simultaneously solving Pennes' bioheat and energy balance equations. Predicted survival time at 0 degrees C was around 39-50min. During exercise with sweating, core body temperature was regulated within 0.25 degrees C of its steady state value of 37.23 degrees C.