Under the hood of Adaptive Training: Analysis in four graphs

[martinheadon]

Skipping the ML chat which goes over my head, I don’t think I fully understand the chart below.

What is meant by “nominal FTP”? Is it just that a +1 increase in PL tends to give you a workout with +2.8% intensity? Or is it that cyclists who do a 9.1 SS workout then tend to see a 10% increase in intensity?

It seems strange the way this is framed around “FTP increase” rather than just “workout intensity”.

@Janhein

The link between PL and nominal FTP
Based on the previous graph one can also visualize how changes in SS progression levels and FTP are correlated. The mid-point of the PL scale (1-10) is 5.5. Let’s assume a user that starts at this mid-point with an FTP of 250W. Assume that over time this user improves the SS PL to a score of 9.1. As seen in the graph this equates to a nominal FTP of 110% or 275W. Updating FTP from 250W to 275W will trigger the AT algorithm to reduce SS PL back to the midpoint of 5.5.