Anaerobic workout and FTP decrease

Yesterday, my plan had me doing an anaerobic workout (this are basically sprints?) This is the first such workout I’ve been recommended so I’ve done absolutely zero training at that level. I was unable to hold high intensity for the recommended time which didn’t surprise me. You’ve got to train that intensity to succeed at that intensity. At the end of the session, after I’d filled out the survey, the program suggested a drop in my FTP of 4 or 5 points. I’d just nailed a VO2 max workout 2 days earlier and a threshold workout 2 days before that and was feeling good with my FTP.

I’m curious about whether I am misunderstanding training in general. Even though I’ve never trained anaerobic zones, should I be able to hold such a zone for 45 seconds or a minute immediately? I thought, like with any other progression, you train at 15 seconds with a certain amount of rest, then the next workout 30 seconds with less rest, etc. Are anaerobic workouts a different animal completely?

anaerobic work, if done enough, does begin to affect FTP. this is a good recent vid where Tim Cusick (who does great education) explains a bit about this https://youtu.be/82yws_2_KTY?si=zs5dywt9XohVRWIh

that said I wouldn’t trust what the recommendation gives you, I think you have to do a lot of anaerobic work for that to have a real effect. the level of sensitivity TR is giving to FTP is a bit ridiculous

It makes sense. I took a look ahead at my training plan and I’ve got a bunch of VO2 max and anaerobic workouts upcoming. It looks like some have shorter intervals than I had yesterday so, hopefully, I’ll be succeeding at least one anaerobic workout someday! :grin: I’m not really worried about the ftp decrease since mine isn’t that high anyway! Thanks for the info

Welcome :slight_smile: