Question

what is the primary purpose of engaging in cardiovascular exercise? a. to improve the efficiency of the heart, lungs, and blood vessels b. to strengthen the muscles in the arms and legs c. to decrease the heart rate d. to increase flexibility in the joints what physiological adaptation occurs with improved cardiovascular fitness? a. decrease in lung capacity b. increase in body fat percentage c. increase in stroke volume of the heart d. decrease in muscle mass

Explanation:

Cardiovascular exercise focuses on the heart - lung - blood vessel system. It aims to improve their efficiency. Physiologically, with improved cardiovascular fitness, the heart's stroke volume increases as it becomes more efficient at pumping blood.

Answer:

For the first question: a. To improve the efficiency of the heart, lungs, and blood vessels
For the second question: c. Increase in stroke volume of the heart