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Muscle vascular conductance (i.e., vasodilation) responses to dynamic single-leg knee-extensor exercise during either normoxic or hypoxic (∼80% saturation) conditions in young men. Arrows indicate the magnitude of compensatory vasodilation during hypoxic exercise relative to normoxic conditions at a given workload. FiO2, fraction of inspired O2. [Adapted from Fig. 7 in Ref. 34.]
