I have been training mixed indoors and outdoors for about a year and a half. I started TR, last April and have been very consistent. I had several times prior done an honest 236 watts outdoors, and assumed my outdoor ftp to be 240. Close enough. Just before starting TR, I did an outdoor one hour ride at 253 NP. I started the MV sweet spot base and my first TR ramp test gave me an ftp of 212. I figured fine, and the first couple weeks were so easy that I made small increases, settling on 220 feeling very tough, but maneagable. 6 weeks later, I retested at a disappointing 210. I left it at 220 and continued. My 12 week ramp test gave me 205. I said, screw this and went for a hard outdoor ride to test my sanity. 253 watts for an hour. Okay. So I set my ftp to 253 and did LV short power build, riding Z2 on Wednesdays and Sundays. 4 weeks later, did an outdoor ftp test and got 265. Now, we’re cooking with butter. Continued the next 4 weeks of build outdoors and I was consistently doing higher watts than prescribed for the VO2 max interval workouts on Tuesdays (usually doing 340 watts when 320 was prescribed). Thursdays and Saturdays were still tough so I just did what my head unit told me. Then, we went on vacation for a week, then I caught a cold for a week, then the entire state of California lit on fire. So, I didn’t retest, but just finished a 4 week sustained power build.
I have now used plan builder as some buddies last minute want to try for a sub 5hr Century Nov 8th. It will start on Tuesday. I have noticed that although I am stronger, I am mentally not as tough, so I am switching back to full indoor on Tuesdays, Thursdays, and Saturdays, with a short Z2 outdoors on Wednesday and a long Z2 on Sundays. I’m sure my ramp test will be low, but that’s okay. I now know that it doesn’t mean my outdoor riding (where it matters) will improve.