Ryan is a previously sedentary, healthy adult. He has participated in an aerobic training program four days per week for the last 6 months. What changes have likely occurred in his cardiovascular system?

Reduction in blood pressure at rest.

Explanation:

Exercise increases cardiac strike volume and at same time heart rate raise cardiac output,and this coupled with a transient increase in systemic vascular resistance and an elevation in mean arterial blood pressure. However, a long term exercise like the 6 months for days per week plan been engaged in by Ryan will promote a net reduction in blood pressure when he is at rest and favours a healthy lifestyle.

Question Options:

a. Reduced resting heart rate, decreased stroke volume, and decreased maximal cardiac output.

b. Increased resting heart rate, decreased stroke volume, and faster heart rate recovery.

c. Reduced resting heart rate, increased stroke volume, and faster heart rate recovery.

Reduced resting heart rate, increased stroke volume, and faster heart rate recovery.

A reduced resting heart rate indicates more efficient heart function and better cardiovascular fitness. Normal resting heart rate for adults ranges from 60 to 100 beats per minute typically, a well-trained athlete might have a normal resting heart rate closer to 40 beats per minute.

Heart rate recovery is simply the time taken for the heart rate to return to normal after the cessation of exercise. An athlete or fit person typically has a faster heart rate recovery.

Stroke volume is the amount of blood pumped by the left ventricle of the heart in one contraction.

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