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Individual compensatory vasodilator responses (relative change) to hypoxic exercise in a subset of older adults (n = 7) before and after nitrate-depleted BR (placebo) (A) and nitrate-rich BR (B). Compensatory vasodilation during hypoxic exercise was unchanged in the placebo trial (control vs. nitrate-depleted BR) and was substantially less than during the nitrate-rich BR trials.
