Predicting the Rectal Temperature Response to Heat Stress.

摘要

The accuracy of Givoni-Goldman's equations and of the power function equation Y = a(X sup b) for the prediction of rectal temperature was determined for a sample of Marine troops undergoing different levels of heat strain. The equations of Givoni-Goldman, developed to be applied to heat-acclimatized men, were more accurate in their prediction when the observed values of rectal temperature were above rather than below 38.5C. The effect of heat conditioning was to increase the difference between predicted and observed values so that the latter tended to be overestimated. When the rectal temperature-time response curve was projected, by means of the power function equation, to later time points from values measured at three time points early in the exposure, the projected values tended to be lower than observed values for subjects experiencing higher degrees of heat strain. While more than 50% of the differences between observed and projected values were less than 0.5C, yet such individual differences could be as large as 1C.