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Peak (A and B) and total (C and D) hyperemic and vasodilator responses in the arm for young, untrained older, and trained older adults. Peak hyperemic and vasodilator responses (20% and 40% MVC) were greater in trained compared with untrained older adults. There were no differences in hyperemic and vasodilator responses between trained older adults and young adults. *P < 0.05 vs. untrained older adults.
