Figure 3. Arm and leg heat contents decreased at rates of 7 and 17 kcal/h, respectively, before vasoconstriction, and continued to decrease at similar rates after vasoconstriction. Results are presented cumulatively, referenced to vasoconstriction at elapsed time zero. Vasoconstriction is identified as elapsed time zero. All values before -0.5 h and after +1 h differed significantly from those at vasoconstriction.