I have used a HRM for many years but have just used it to see what I have been doing - this year I bought a new HRM and have been using it to control my training intensity.
I have calculated my Working Heart Rate 190 (maximum HR based on a treadmill test and the usual 214-0.8 of age they all came out with the same figure) minus my resting HR of 46 therefore my Working Heart Rate is supposed to be
190 - 46 = 144
I have then calculated my training zones ie. 70% is 144 x 0.7 + 46 = 146.8 etc.
These zones seem way off what I actually run at, for instance I ran Great South Run (10 Miler) and maintained an average HR of 177 which is 91% !!!! The training zones suggest for a 10 Miler that I should be running at around 80 - 85% which would be in the 160's which would be way too easy and slow for me to race at?
Do I train and work out my own zones i.e. I know that for a 10 Miler I can maintain 91% and therefore I should be able to maintain 94% or thereabouts for a 10K and so on?
Or should I presume that my maximum HR is actually a lot higher than 190 and up that part of the calculation to say 200 and see how I get on?