How do people feel about the accuracy of FTP AI detection?

[Helvellyn]

@Power13

The higher your FTP, the more your friends and family will love and respect you.

Friends? Lol.

[Barry_Bean]

@Power13

Factually and definitionally incorrect.

FTP is the sole measure of your self-worth. Your entire entity and value on earth is measured by this number. The higher your FTP, the more your friends and family will love and respect you.

LOL, I stand corrected!

[jsiegrist]

@Monkeyevil

Ramp tests overestimate my FTP because I’m on the wrong side of the 75% of your best 1 min bell curve or whatever equation each platform uses.

AIFTP was finally so frustrating to me that I hired a coach and left Trainerroad. I’ve trained ~550 hours this year and have finally gotten near the number AI FTP thought I was as a year ago, but now I have a huge foundation under it. Obviously not a solution for everyone, and the vast majority of people close to me get along with AIFTP just fine, so I’m probably an outlier.

As an aside, the intervals.icu model turned out to be the most accurate for me for FTP the whole time, but I never believed it could be that low because I drank the AI Kool-Aid.

This mirrors my experience pretty closely. I over perform ramp tests so much that TR had me like 50 watts over what my real threshold was. I had no idea why I was struggling with 8 minute SS intervals. This was a couple years ago now, but I eventually gave up on TR and did a long form test. Even then it took me a minute to suck it up and lower it that much.

Fast forward and my ftp today has finally exceeded what the ramp test gave me way back when. I’m maybe 20 watts over that, but because I’ve spent so much time with extensive work, I can hold it for a full hour no problem. SS tte is 120 minutes, which is something I thought was completely impossible for me 2 years ago.

Once I manually lowered it and built it back up AIftp seems to track it pretty accurately. Maybe 5-10 watts low, but I can now tell where my ftp is by feel, and I usually err on the low side. I know what it’s like to have intended threshold workouts actually be VO2 and let me tell you, it leads to some dark times.

[Monkeyevil]

Yep or endurance rides be tempo. Or like you said failing an 8 min SS intervals and wanting to quit bikes entirely.

I’m also pretty confident I could come back to TR and do okay now on workouts, knowing what I know about training. But I really enjoy big volume now, and that seems incompatible.

[Michael_D]

Feels great I wish you could pay a reduced membership just to get that.

[slrservice]

It’s not super precise but super useful because often when you are training in blocks you don’t want to be spending some of your rest + taper + peaking on just doing an FTP test to confirm what you already know (riding is making you faster). So it is nice to get some kind of idea just from the key workouts.

[MI-XC]

Was surprised to hear that DJ uses Xert’s version of AIFTP to set his training zones in 2024. AIFTP has been perfect for setting my zones and I can’t imagine ever doing another FTP test.