Originally Posted by GhostRider62

I'm into my 60's and can hit 183 bpm and 18.4 METS on a treadmill. I can't touch those numbers on either an upright bike or a recumbent bike

On an upright, normal bike I can hit 175 bpm and around 365 watts for 5 minutes (VO2max proxy). I would TT in the low 160 HR BPM

On my very reclined recumbent bicycle, I have trouble exceeding 160 BPM and my best 5 minute power is 348 watts at 137 BPM, 20 minute power 322 watts at the same heart rate. If not fit, I have to push into the high 140's to make less power. Fitness increases stroke volume (of course)