Fig. 8.

Ensemble-averaged blood flow rates (over 10 heartbeats) in the AA (a) and DA (b) of a representative female subject, at rest and during a brief cessation from physical exercise stress. The time component was normalized with respect to the total period of the cardiac cycle for each curve. Panel (c) shows mean flow rates for 5 subjects at rest and during a brief cessation from exercise. Both AA and DA mean flow rates significantly increased due to exercise. Statistical significance (P < 0.05) was detected with Student’s t-test.