Answer:
a.the minimum heart rate for cardiovascular exercise
Explanation:
The heart rate (HR) is useful for controlling the intensity of aerobic exercise, especially when a stress test is available with analysis of the respiratory gases (ergospirometry) and an HR value is associated with the thresholds and VO2max. If you do not have access to this type of test, the FC can be used, but doing some calculations.
It is the amount of beats that the heart performs for a minute. It is usually expressed in "beats per minute" or "beats per minute."
Nowadays there are several devices to be able to mediate the HR while exercising so it represents an accessible way to control the intensity.
