How unreliable is virtual power?
Here are some numbers;
FTP test on new years day : 262w
Manually adjusted FTP 2 weeks later as workouts were very easy : 275w
FTP test Monday(13th FEB) : 338w
Now, as much as I'd like to believe I'm pushing out 4.7w/kg I'm pretty sure I'm not. I know I tested badly on new years day, and I know I felt really good on Monday, but what else could be going on here? Could my turbo of lost some resistance in the past 6 weeks? Something else changed that could make this much difference? tyre pressure? It doesn't matter too much as I am only currently using power within trainerroad at the moment and won't be able to get a powermeter any time soon.