Hey, I’ve been using xert for a while now have around 3 weeks of data with a power meter uploaded to it mostly outdoor rides and more recently a couple indoor rides. Problem is xert FTP calculations give me an FTP of 280 watts however I did a indoor ramp test yesterday (which is also uploaded into xert) which gave me an FTP of 235.
My peak power seems to be close to what it is, just my FTP from xert differs a lot from my indoor ramp test. Do I have any outdoor activities that are screwing up my calculation somehow? Is the indoor factor that makes my FTP be lower from what xert calculated using outdoor rides as well?
Would like some clarification if possible since from 235 to 280 it’s still quite a big jump and not sure on what I should base my training .
Ah I use exactly the same powermeter indoors and outdoors so there is no variation there!