Had a very interesting FTP experience today. Just finished SSBMV I, just easy rides this past week. Did AIFTP this morning, gave me 290 up 2W fro 288 (whatever, didn’t bother to accept it). I recently have also been tracking on Xert, and have been using Goldencheetah for years. Xert previously had my TP (xert FTP equivalent) at 260. Goldencheetah had CP (we’ll just assume that’s basically FTP equivalent) at 269.
I did Kolie Moore “baseline” FTP test, cutting power back to 96% thinking better to start conservatively. First 10 min were fine. When it bumped up at the 10min mark, got tough, and I was switching back and forth between ERG and slope modes. I got through the next 7 min near target, then had to cut back for a few minutes to near the original 96% power (276) or below. Then at the end of the 15 min block, tried to ramp slowly. HR got to 155 which is 90% HRmax for me, at basically low end VO2max HR. I managed another 5 min, getting to about 300W, but could only get HR to 158. I had to quit at that point, basically due to burning lungs despite I had a goal to get to 165 which is 95% HRmax, but couldn’t make it. The average was 274 for the effort, which Moore says I should take as FTP. Xert gives updated estimate of TP at 265, and GC give CP of 267
all that said, in SSBMVI, I didn’t feel the workouts were too hard, most I rated “moderate”, and I added a bunch of Z2. So it seems AIFTP is ok for setting TR zones, except I know from previously doing some TrainNow VO2max workouts, I have to turn that down 5%
anway, tldr; AIFTP is higher than my actual sustainable power, but seems to be ok for setting zones for TR workouts, except near VO2max
Not sure how that will impact my planning for the next block, but that would get off topic