Originally Posted by
Doge
I often see folks compare HR between athletes and then power between athletes and say see how much more reliable power is... Paraphrased of course. But yea.
On the edge numbers I see smoother lines for HR than power. I have not looked into sampling rates, but just about any Strava TT for a leader that post both power and HR - the HR plot is smoother.
Isn't that a bit obvious? Output power has a large dynamic range and can change very quickly, e.g. it can go from maximum to zero in one pedal stroke. Heart rate, however, changes relatively slowly over a more limited range.
*I guess it's possible for your HR to go from maximum to zero in one pedal stroke, but you better hope it doesn't!