Quote Originally Posted by Yorkshire Rob View Post
ydt that calculation can be way off, my max is 198 and that calc would put it at 191 and others have reported being out by 20 beats. Although you may well be correct about the instrument error.
I did use the term 'approximately'! My own max. heartrate was always higher than that given by the approx. formula. I would not say that 198 is way off 191!
ydt