What is the latest findings on heart rate calculations
As you probably already know, all the heart rate formulas have come under attack for inaccuracies. Here is the latest article from ACE on how to use the new formulas:
http://www.acefitness.org/blog/3502/advances-in-aerobic-training-how-to-…
I hope it helps. I tend to use RPE for most of my clients as I find it easier to use with them and easier for them to see when they need to work harder without having to recalcuate their HR as they become more fit.