pls can u help?

Question

the range for a normal resting heart is 60 to 90bpm.A trained athlete could have a resting heart of 45 to 60bpm.why might a very fit person have a slower heart rate than someone of average fitness?

Answer 1

The capability of pumping more amount of blood with each heart beat is one of the major training effects of regular aerobic exercise just as the athletes do. The amount of blood pumped with every heart beat is called the stroke volume.

Exercise improves the stroke volume by having more blood pumped with each heart beat. An increased amount of blood per heartbeat would mean an increased stroke volume.When stroke volume increases with training, the rate or heart beats per minute becomes less.Obviously, the body needs a constant amount of blood during resting period. The heart won't pump an amount that would be more than what is needed. Thus if the resting stroke volume is improved with exercise training, the resting heart rate becomes less.

Answer 2

A very fit person would have a slower heart rate then someone of average fitness because their heart would be stronger. Thus the heart would need to pump less often to supply the same amount of blood than a weaker heart.

A good example is if you compare it to a 10 volt pump (average) to a 20 volt one (fit), pumping water through a pipe.

Answer 3

A very fit person will have a slower heart rate than someone of average fitness because their heart is stronger, therefore, it doesn't have to work as hard. For hearts, not working as hard means not beating as often.

Answer 4

Because the heart of a very fit person is stronger, and it is used to pumping a lot of blood all the time. It is able to pump more blood per beat than a normal heart, so it doesn't have to beat as much.

Answer 5

their heart also is hypertrophied so they have much more stroke volume that normal people but the cardiac output which is stroke volume times heart beats is the same in both athletes and normal persons