Sweet Spot Progression

[Bbt67]

Well I tried it to see if it simplifies to that and didn’t get the correct answer, I use the formula I posted and it equals the values in TrainingPeaks & WKO

Formulas from ‘Training and Racing with a Power Meter’

TSS calculation (formula)

I’m having a hard time figuring out how TSS is calculated. The only thing that resembles a formula I can find on the Internet is this: TSS = (t * NP * IF) / (FTP * 3600) * 100 where t is the ride duration in seconds. That looks awfully complicated. For one thing, why measure t in seconds only to divide by 3600? Why not just measure it in hours (1 hour = 3600 seconds)? For another, isn’t IF just NP / FTP? So the formula simplifies to this: TSS = t * IF * IF * 100 where t is the ride duratio…

https://support.rouvy.com/s/article/What-is-TSS-and-IF?language=en_US