You are reading a single comment by @hippy and its replies.
Click here to read the full conversation.
-
http://alex-cycle.blogspot.co.uk/2008/05/the-seven-deadly-sins.html
"the seven deadly sins....
...er, ways of determining your functional threshold power (roughly in order of increasing certainty):
1) from inspection of a ride file.
2) from power distribution profile from multiple rides.
3) from blood lactate measurements (better or worse, depending on how it is done).
4) based on normalized power from a hard ~1 h race.
5) using critical power testing and analysis.
6) from the power that you can routinely generate during long intervals done in training.
7) from the average power during a ~1 h TT (the best predictor of performance is performance itself).Note the key words "hard", "routinely", and "average" in methods 4, 6 and 7..."
hippy
The question is which is how well an hours XC racing equates to a 20minute FTP as a testing regime. HR just to illustrate the intensity.