Today I have been wondering if HR and power zones usually align, albeit with different ‘curves’ if plotted on a linear graph - imagining power as a straight line then does HR typically increase at a lesser rate to a certain point then ramp up quickly until max?
(Notwithstanding variations to HR caused by fatigue, sickness etc.)
Below is why am thinking that.
Did Baxter today for the first time in a very long time, started SSB1 from scratch this week so did ramp a few days ago.
Unusually I had an HRM on, almost all my training has been RPE or power alone. Shocked me that the higher zone 2 into zone 3 power stuff hardly moved my HR or RPE for that matter.
Mostly I was in zone 1 for HR, only nudged into zone 2 for the tempo intervals and only by a couple of BPM.
As background I have taken some time off the bike for last month and not trained much since late November. Baxter felt very easy, never uncomfortable in the slightest. FTP on recent ramp was around 10 watts lower than November (from ramp and 20 min test)