EFFECTS OF FOOD, CLIMATE, AND EXERCISE ON RECTAL TEMPERATURE DURING THE DAY

摘要

A series of experiments was performed to determine the effect of cli¬mate, food intake, and activity level on the diurnal pattern of rectal tem¬perature (Tr) from 8 A.M. to 8 P.M. The results indicate that living in diverse climates has little or no effect on the diurnal pattern of Tr. Ac¬tivity level, when food intake was adequate, did not alter the pattern. Fasting, with no exercise, reduced the diurnal elevation of rectal tempera¬ture to one-half the "normal" elevation. During fasting with exercise the rectal temperature at 8 P.M. was the same as the value at 8 A.M. (i.e., no diurnal increase was evident). Thus, the major portion of the diurnal change occurring between 8 A.M. and 8 P.M. was associated with the ingestion of food.