MEDICAL PHYSIOLOGY

Detailed explanation-1: -During exercise, your heart typically beats faster so that more blood gets out to your body. Your heart can also increase its stroke volume by pumping more forcefully or increasing the amount of blood that fills the left ventricle before it pumps.

Detailed explanation-2: -The stroke volume increases because of increased ventricular contractility, manifested by an increased ejection fraction and mediated by sympathetic nerves to the ventricular myocardium.

Detailed explanation-3: -An increase in stroke volume is most commonly seen during aerobic exercises or endurance-type activities like running, swimming or cycling.