Heart rates and effort zones

From your minimum and maximum heart rates, you can define effort zones.

Maximum rate: pls/min
Minimum rate: pls/min
Very intense effort pls/min
Intense effort pls/min
Moderate effort pls/min
Feeble effort pls/min
Very feeble effort pls/min

N.B. The improvement of aerobic performances takes place only in the intense and very intense effort zones. In these zones, the heart rate is not proportional to the effort, which means you can get higher performances from lower rates (Ref.).

Design of the calculator