Forecasting future FTP using AT and AI FTP

I’m confused by what you’re trying to get here. You do get those changes with a re-assessment every 4-6 weeks. Knowing if you’ll get that much now, which is just really a WAG has no real impact
on the training you should do.

And a 2-3% difference in intensity is a really big deal. It makes a huge difference in workouts - without AT I’d often start failing workouts coming off a change like that.

Guessing what fitness changes will be is irrelevant. What we really want is actually sustained 2-3% growth. Compound that for yourself over a year or two and you’d be extremely happy.