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Heart rate, stroke volume, and cardiac output at normothermia, after core temperature was increased ∼0.7°C and 1.2°C, and during simulated hemorrhage to presyncope. *Significantly different from normothermia (P < 0.05). †Significantly different from heat stress (i.e., 1.2°C) just before the onset of lower body negative pressure (P < 0.05).
