how does cardiac output affect performence?

Answer 1

Aerobic activity is limited by the availability of oxygen that must be delivered to the muscles via the blood.

Answer 2

1

Answer 3

Your question is confusing. Cardiac output can best be visualized as the effectiveness of the heart and blood vessels to deliver essential materials to the cells of the body. Cardiac output is a function of cardiac contractility (how strong the heart pumps) and the amount of blood ejected with each heart beat Additionally,the condition of the small vessels usually called vascular resistance also plays a part. The effectiveness of the heart as a pump is measured as Stroke Volume which is the amount of blood pumped with each beat. Stroke Volume X Heart rate is defined as Cardiac Output.

If vascular resistance is high as in high blood pressure then for a given Cardiac Output the heart must work harder; hence the potential for damage to the heart as a result of high blood pressure. Conversely if vascular resistance is low for a given Cardiac Output the work load of the heart decreases.

Answer 4

Well, considering cardiac output is one of the main determinants of blood pressure (the other is systemic vascular resistance), which keeps blood flowing delivering nutrients to the cells in your body so they are alive and doing they're job---I'D SAY ALOT!!!

BP = CO x SVR

Think of the heart as a pump, the amount that it pumps out is the cardiac output, how tight the pipes are is the systemic vascular resistance.

Answer 5

try putting a fuel line on your car that is half the size from the factory.. then take it to the freeway and floor it.. see what happens.. if the fuel can meet the demand.. something is going to either slow down or stop.. athletes have a bit bigger and stronger heart than someone who is sedate.. the heart is a muscle and grows with the demand.. thus athletes have bigger hearts to accomodate the pumping load.. how does it affect performance? In a very big way.

Answer 6

It increases stroke volume