Why does the resting heart rate become smaller by exercising?

Answer 1

Because the stroke volume (amount of blood pumped per contraction) increases in the trained individual. Therefore to deliver the quantity of blood needed to support metabolism in the resting state, you heart needs to beat less frequently.

Answer 2

It goes lower than the resting heart rate because when you exercise, your heart pumps faster. And when you stop, it has to slow down rapidly to stop you collapsing or hurting yourself. Then it goes to normal resting rate after about 30 seconds.

Answer 3

Resting heart rate only decreases when the heart becomes stronger. This is done through many hours of exercise. The heart wall of the left ventricle in particular (which is the chamber where blood leaves the heart to the body) becomes stronger and thicker due to exercise and therefore the heart rate will decrease.

There is a formula which shows this easily.

Cardiac output - Q - the amount of blood pumped by the heart per minute

Stroke volume - SV - the volume of blood pumped out by the left ventricle per contraction

Heart rate - HR - the number of times the heart beats per minute

Q = SV x HR

untrained person - Q = 60ml x 80 b.p.m = 4.8 litres per minute

trained person - Q = 80ml x 60 b.p.m = 4.8 litres.

the stroke volume has increased, so the heart rate can decrease because the heart is still keeping up with demand.

Answer 4

I DONT KNOW SORRY IM THE ONE TRYING TO FIND THE ANSWER TO THAT QUESTION LOL x