Health & Fitness
Intermediate

Heart Rate Reserve

The usable range between rest and maximum heart rate.

Formula

HRR=HRmax−HRrestHRR = HR_{max} - HR_{rest}

Variables

HR_{max}Max heart rate
HR_{rest}Resting heart rate

Example

190 − 60 = 130 bpm of reserve

Did You Know?

Fit endurance athletes have huge heart-rate reserves, with resting pulses that can dip below 40 beats a minute.

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