What is the typical heart rate (HR) that leads to a cardiac output of 5600 ml/min with a stroke volume of 70 ml/beat?

To determine the typical heart rate that leads to a cardiac output of 5600 ml/min with a stroke volume of 70 ml/beat, we can utilize the formula for cardiac output:

Cardiac Output (CO) = Stroke Volume (SV) × Heart Rate (HR).

In this scenario, we know the cardiac output is 5600 ml/min and the stroke volume is 70 ml/beat. To find the heart rate, we rearrange the formula to solve for HR:

HR = CO / SV.

Plugging in the values:

HR = 5600 ml/min ÷ 70 ml/beat = 80 bpm.

This calculation shows that a heart rate of 80 beats per minute would yield a cardiac output of 5600 ml/min when the stroke volume is maintained at 70 ml/beat. Thus, the answer reflects a standard relationship between these cardiovascular parameters. Understanding this relationship is critical for assessing cardiovascular health and performance in fitness settings.