Question

How is the heart rate calculated?

Answer 1

Determine your Maximum Heart Rate (MHR) by subtracting your age from 220.220- age = MHRSubtract your Resting Heart Rate (RHR) from your MHR.

This gives your Heart Rate Reserve (HRmax Reserve).

MHR- RHR = HRmax ReserveTo get the lower end of your target heart rate (50%), multiply your Heart Rate Reserve by .50 and then add your Resting Heart Rate to it.

(HRmax Reserve × 0.50) + RHR = low end of zoneTo get the higher end of your target heart rate zone (85%), multiply your Heart Rate Reserve from step 2 by 0.85, and add your Resting Heart Rate to it.

(HRmax Reserve × 0.85) + RHR = high end of zone

Answer 2

Subtract your age from 220 to get your maximum heart rate. Calculate your resting heart rate by counting your heart beats per minute when you are at rest, such as first thing in the morning. ... Add your resting heart rate to this number. Multiply your HRR by 0.85 (85 percent).