I have a power meter on my road bike, but not on my MTB, so will have to train with HR on the MTB. I have established an estimate of my FTP via the CTS 2x8 minute test done on my road bike with the power meter. As part of this, my average HR for the best 8 minute test was 161. Do I enter this into TP as my threshold HR? I see there are different methods of calculating the HR zones, one of which is ‘CTS Cycling’ with ‘Lactate Threshold’. So, the HR value that I enter for using that calculation method - should it be the 161 average HR for the best 8 minute test, or something else? (Based on some other recent rides that I’ve uploaded, TP is suggesting a LT HR of 156, so not real far off, but I don’t want to screw myself out of a few extra beats of pain/gain, if I should be entering the higher number. I suspect that TP is looking at max X-minute heart rate to come up w/ the 156?)
Thanks for your help!