How is FTP actually calculated now?

What is TRs new definition?

Don’t do drugs, kids.

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I’m pretty sure James is trolling you.

They lay it out here. covers why its better than any old testing.

So TRs own definition of FTP is a number that allows you to complete a level 3 workout.

You don’t see why that’s rather arbitrary and would inflate someone’s FTP if their previous definition of it was LT2 or a number they could do a 40k time trial at, or a number they could hold for 40-70 mins?

Why not make it a number you can complete a level 5 threshold workout out? Or a level 7? Or 6.7?

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I understand your point, but do you also see the arbitrary nature of ‘their previous’ definition as people rarely understood its actual definition and mostly don’t know what MLSS is either?

They still have all those things, and those things are still not FTP. They may or may not be similar numbers.

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Probably looked at:

  1. where the majority of the customer base was

  2. what levels the model saw the biggest increases in watts either due to structure, workout consistency, or something else.

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Don’t talk to me about level 5 threshold workouts :sweat_smile:

The progression levels paradigm encourages us think there is a similar progression path across zones when there isn’t.

As for level 7. There’s not many folk who would see their optimal adaptations from these kinds of workout;


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This is wrong, it’s more like “level 3 and rate it hard”. Max effort threshold is way different.

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No changes to workouts that would impact my projected FTP other than this one. It is harder than the scheduled workout but still projected as Moderate. How is it possible that this workout would REDUCE my FTP when it is a harder workout? The logic makes zero sense.

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