This Javascript-based LevelCalc calculator helps users determine their heart rate values according to the BCF/Peter Keen guidelines. It includes an equation to estimate maximum heart rate (MHR) for those who do not know it. This calculator is useful for those who want to achieve their personal training goals, such as spending time at level 2 with a cadence of 90 rpm.
Here is a rather spartan Javascript version of the LevelCalc heart rate calculator. This one calculates heart rate values based entirely upon the BCF/Peter Keen guidelines. With the one important change to allow people who have no idea what there maximum heart rate (MHR) is can estimate from the equation MHR=220-age.
LevelCalc is better - but only if you can run Windows software. I use the BCF method because it "feels" right. All I really need to do to achieve my own personal training goals is to spend as much time as possible at level 2, with my pedals spinning at a cadence of around 90 rpm.
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