Originally Posted by
MoAlpha
You may well be right and I’m certainly not claiming that I’m fast or that this was any sort of great ride. The only reason I brought it up was that I didn’t really need to fuel much for it. If we re-run it at an FTP of 220 or 3.4 W/kg, which I’m pretty sure is an overestimate, based on my unimpressive history, the intensity is 82%. The truth may be somewhere in between.
Just looking at your data again, the variability at 1.31 is very high. So might be skewing the NP value compared to a more steady state effort. I only see that kind of variability on very hilly steep climbing/descending rides. Or rides with lots of stops averaged in. Your average power of 138W looks more in line with your FTP. My ride had a variability index of 1.18 so my average power was much closer to my NP (176W average vs 208W NP). So that might explain your relatively high IF.
I take your point about fuelling. I'm sure I could go for that length of time without re-fuelling too if I had to. But I perform better and recover better if I fuel my rides.