As a bit of background to my question, I’m a 57 year old “|ife-long cyclist” returning to TrainerRoad after a two-year complete break from cycling due to a (thankfully, apparently one-off) brush with the dreaded AF.
My main fear with the AF, is getting another attack when I am 20 miles from home, so I’m starting my rehabilitation riding on the home-trainer until I get a bit more confident that my heart rate is behaving itself under (moderate) stress. On that basis, the last thing I want to do is a maximal effort to get an accurate FTP.
As such, I’m manually setting my FTP to a level that enables me to keep my heart rate at a “moderately extended” level in the drills, and I’m just wondering (on a totally subjective basis) how far “under” I am. I’d emphasise, I’m not trying to guestimate any kind of meaningful FTP value, I’m just looking to get a view on how much under the correct effort level for each workout I’m actually working at.
Prior to my AF issue, at 55 I used to try and cap my efforts on the road under 165BPM, although my actual max heart-rate was well into the mid-high 170’s (I had a premonition that I shouldn’t be pushing it too hard, as my resting heart rate was starting to resemble a particularly lumpy old diesel).
With my current “pseudo-FTP”, I’m staying under 150 during sweetspot workouts and maybe drifting up to 155 on Threshold. In both cases subjective exertion is moderate.
Any feedback on what HR% any of you hit would be much appreciated.