lets say you were at an ftp of 200, then went through a block and retested at 240. Your FTP didn’t magically jump to 240, it slowly increased between the block with training. While not likely perfectly linear, it is a good enough approximation. So say you change the FTP to 220 for the middle of the block to recalculate TSS, ATL, CTL, and TSB. This usually results in a slightly lower training load over time and slightly lower CTL/fitness by the second block.
Why bother? If you want to push the numbers just simply do the workouts by feel and up the percentage. If 90% feels too easy increase the intensity you will get higher TSS and CTL. These two are only values to roughly describe your training and should be looked in a wider context in my opinion.
It has nothing to do with current workout levels, it has to do with tracking your yearly TSS/CTL loads as your FTP varies over seasons. You can’t objectively look back at training to determine how well it works without having but a micro and macro scale look at your training. In particular it is helpful to look at things like TSS ramp rate that Friel recommends, and this is dependant on an accurate FTP and frequent testing.
I do not think that micromanaging FTP is way to go, too much hassle and no reward other than numbers in line with some general suggestions. If you want to push harder, push harder. If the jump is really big, simply change the FTP value in settings if you want to micromanage. Of you can do proper long threshold workout every two weeks to test your FTP.
again I think you are misunderstanding. I’m not asking for a microadjustment in real time of FTP for pushing current workouts, this is for retrospective analysis of previous work, for recalculation of TSS and CTL
I think my confusion misunderstanding stemmed from looking at my ramp test ride file.
In that it shows my FTP as being the old FTP and if I change the FTP number used to the new FTP number then the TSS value changes. To me that suggested it was based on the old FTP number.
I’m guessing there is some technical wizardry and calculation hidden which means it isn’t quite that simple.
Thanks for taking the time to respond.
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