Originally Posted by
unterhausen
from what I have seen on my trainer, heart rate is a really poor measure of power. I suppose if all you do is steady-state, but that seems unlikely for most of us.
Fully agree. If I stop at a Burger King or McDonalds and have a couple breakfast sandwiches, my next hour and a half will have a much higher heart rate with lower speed.
I rely on the heart rate monitor to tell me where I am relative to my full capacity, but my full capacity varies by lots of factors during the day and from day to day.
Since I do not use it for any form of comparison training from one days data to the next, it is more than adequate for my purposes.