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Relative changes in a the blood flow velocity in the posterior cerebral artery (PCAv) and b the conductance index (CI) from resting baseline to handgrip exercise, and recovery or post-exercise muscle ischaemia (PEMI). n.s. not significant; *p < 0.05 vs. resting baseline; † p < 0.05 vs. recovery; ‡ p < 0.05 vs. control
