I have started doing all my z2 rides with lactate testing every 10m. I aim for exactly 2mmol because it’s a nice round number (very individualized too 
) that just magically corresponds to physiology and peak mitochondrial function, how convenient.
It seems to be working however as my ftp has gone up by 50w but the cost of lactate strips is getting a bit expensive.
It is a bit of a hassle and my fingers are starting to hurt from all the lancets but I am sure it’s worthwhile.
Unfortunately not it. That’s just a description of how to use lactate to train, not someone seeing if training by lactate leads to different performance outcomes from training by power. Thanks for the link though!
Yeah read that but they are linking lactate to power zones which implies they see them as interchangeable in some way, so might be worth looking at their ‘power performance calculator’.
BTW I neither support nor decry their work, it just looks related. 
ISM has been put on a pedestal for having “coached” Pogacar but where are all the other world beaters?
Coming across one generational talent and being able to coach them is just luck.
McNulty wasn’t transformed (still a good rider but not top of the podium). Anyone else that ISM magically transformed?
Marinus Petersen (Kilowatt coaching) had some interesting comments about ISM style Z2 vs. much lower intensity higher volume. He said that world tour teams seem to be split. Some do higher volume at lower intensities (like 50% of FTP because when your FTP is 400+, even 50% is burning through a lot of kjs). And other teams are doing ISM style long intervals (right at LT1) on less volume.
There seems to be no clear winner with these strategies other than Pogacar (n of 1) in the pro peloton.
Sorry. I’m not going to read all that. Have a good night.