Originally Posted by
Coachtj Cormier
Also if HR is so much better the Watts whay are all lab tests (for cycling) done measuring Watts? I've tested many athletes (LT VO2Max and such) and many times for LT we will see a drop in HR at LT but we've seen the resistance (Watts) increase. So again the use of HR alone is not as reliable as using HR RPE and Watts.
I don't think anyone's arguing for the superiority of HR over power. But its shortcomings can be to some extent compensated for by experience and it is telling you something useful. Obviously, using power and HR together is going to be superior.