Just for laughs, I looked at the IFs of some of the riders who have completed the ramp. Average = 0.96 with SD +.- .06.

I guess if this holds up, you could get within 6% of whatever other method you used to get FTP. Probably better if their algorithm figures out whose data to drop.

Now it makes me wonder if the BSX was using this sort of calculation, at least to 'flavor' their SmO2 readings. Was always a bit suspicious based on my own results, that how far you were able to push in their ramp had some effect on the calculated FTP. But that's a whole other can of worms.

A.