Fig. 3.

Common and deep femoral venous O₂ content and estimated leg tissue blood flow with heat stress. Arterial and common femoral venous O₂ content during whole body heat stress. Data are means ± SE for 10 participants. In 4 additional participants, increases in common femoral venous O₂ content were accompanied by elevations in deep femoral venous O₂ content and estimated leg tissue blood flow, which are suggestive of an increase in blood flow to the muscle tissue within the leg. *Different from control, P < 0.05; #different from skin hyperthermia, P < 0.05; †different from skin and mild core hyperthermia. Significance refers to differences in the respective conditions, i.e., either rest or exercise.