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I would ignore most of Strava's "calculated" values... they seem to generally be pretty iffy.
Stick to what Training Peaks is telling you (pretty sure I have seen you post up some TP graphs before - so presume you are using it)
The calculated (from cp20) FTP I got from TP and TrainerRoad were within 1-2W
danb-
I would ignore most of Strava's "calculated" values... they seem to generally be pretty iffy.
Stick to what Training Peaks is telling you (pretty sure I have seen you post up some TP graphs before - so presume you are using it)
The calculated (from cp20) FTP I got from TP and TrainerRoad were within 1-2W
I'm using the FTP value from the 2x20 Trainer Road test, which I input into Training Peaks (257 watts), it was a dreadful test though - at least half was at tempo tbh.
I've been using that as it was an actual test, that I did, rather than an algorithmic interpretation of ride data.
However, the intention (use hard data) may be actually generating bad data (FTP set too low, bonkers TSS and CTL values the result).
Does Training Peaks have an "estimate threshold power" function? I'd be more inclined to trust that than Strava.
Dammit
I've not looked into it but my reason for distrusting the Strava figure was that it appeared to simply take the 20 min power and use that as your FTP.
I may be wrong though.