Today I did Monitor +2 (I redid my plan recently and what it had put in made no sense), and I was playing around with cadence. I also am someone with a really low initial FTP (118) and this was seeming a bit easy, so I had it cranked up to 105%
I’m a 50 year old male and haven’t tried to find my actual max heart rate for years. I’m running in ERG mode, so same watts no matter what.
During intervals, my heart rate ramps from about 133 to 135 and then recovers nicely, at my usual cadence of 85 RPM.
If I crank that up to 95-100 RPM, I get a lot more sweaty, and I breathe harder, and my heart rate? Exactly the same. If anything, it recovers a bit faster than usual.
If I dial it down to a mashing 70 RPM, my legs burn like crazy. And my heart rate? Exactly the same. Recovery is a little slower than usual.
I guess I’m surprised that perceived effort doesn’t have hardly any impact, so I guess the rate is just a reflection of watts and nothing else. So the next question is, how much harder should I be pushing to see if I can make it go higher (if at all at this point)?