Question

9 as a person gets in better cardiovascular shape, their resting heart rate will ______. a decrease b increase c remain the same d they are not related

Explanation:

In cardiovascular fitness, a better - shaped heart (from improved cardiovascular fitness) can pump more blood with each beat. So, at rest, the heart doesn't need to beat as often to supply the body with enough oxygen and nutrients. This means the resting heart rate decreases. Option A is correct as options B (increase), C (remain same), and D (not related) go against the physiological understanding of cardiovascular fitness and resting heart rate relationship.

Answer:

A. Decrease