No I'm not going to talk about KFC.... though they do have this back on the menu
As I mentioned here, Dr Cogan is back in the lab re-designed the TSS metric from the ground up.
Today he released another teaser,
Blue points are from structured or unstructured workouts at levels 2-5. Red points are from races and from level 6-7 training sessions. TSS was modeled after Banister's TRIMP, and attempts to express power data in terms of the stress that is applied. The new score, OTOH, was designed from the "ground up" based on first principles as a predictor of training-induced improvements in performance.
What this seems to be showing is that some things (crits, circuit races, L6/L7) are in fact NOT as good training as others given the same amount of training stress. That is, 1 extra point of TSS in L6/L7/Crits only gives a 0.46 extra boost in the new performance index, whereas 1 extra point of TSS in L2-L5 training/TTs/ road races gives a 0.76 boost in the new performance index.
I guess the obvious question becomes: is the new performance index intentionally biased toward adaptations that increase FTP (as opposed to, say, strength or Anaerobic Capacity)? Is it trying to measure more directly how much impact your training/races contribute toward improving FTP.....
That makes sense. I find that the MTB short track races are pretty limited in what I take away from them in terms of improvement. They are run at about 95%MHR. Whilst this might boost my FTP a little. They can take a few days to actually recover fully from. A better training stimulus is often to do a 4 hour tempo ride in the hills.
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