Just received "The Triathlete's Guide to Training with Power" by Skiba. I loved his first book, so looking forward to this one.
Read Chapter 2 last night on "Setting The Benchmark", and I was surprised that FTP is established by doing a 3min test and a 20min test (both all out) on different days, then taking the slope of the curve (really line) defined by the work done in each of these tests (work=watts*duration).
Skiba then uses the slope of this line as an estimate of FTP (1 hour max power).
This approach comes from work on the 60's by Monod and is related to the historical defination of "Critical Power".
From reading abstracts of Monod's work, it seems to me that one would have to calculate FTP as 60min power based on the assumptions of work=a+b*time.
Also, if using this approach, does it not mean that if you raise VO2max power you will get a lower FTP by definition (slope will decrease)?
Just wondering if anybody else has put thought into this FTP test protocol versus the 20-2-20 or similar.
Read Chapter 2 last night on "Setting The Benchmark", and I was surprised that FTP is established by doing a 3min test and a 20min test (both all out) on different days, then taking the slope of the curve (really line) defined by the work done in each of these tests (work=watts*duration).
Skiba then uses the slope of this line as an estimate of FTP (1 hour max power).
This approach comes from work on the 60's by Monod and is related to the historical defination of "Critical Power".
From reading abstracts of Monod's work, it seems to me that one would have to calculate FTP as 60min power based on the assumptions of work=a+b*time.
Also, if using this approach, does it not mean that if you raise VO2max power you will get a lower FTP by definition (slope will decrease)?
Just wondering if anybody else has put thought into this FTP test protocol versus the 20-2-20 or similar.