Heart rate zones (Karvonen method)
Calculate the five training heart-rate zones using the Karvonen reserve method, which adjusts for resting heart rate.
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- Heart rate reserve (HRR)126
- Z1 lower bound (50% HRR)121
- Z2 lower bound (60% HRR)133
- Z3 lower bound (70% HRR)146
- Z4 lower bound (80% HRR)158
- Z5 lower bound (90% HRR)171