I’m only going to comment on first 3 circles.
Did he desaturate far? (If Moxy was on the VL, it doesn’t feel low but)
Extremely interesting question. I think it all depends…. if you compare desaturation of his VL and my VL, not far desaturation at all (and I’m not that good),
I can desaturate my VL to 20% easily. There is one caveat: I know I have VL imbalance (I found out yesterday in really bad way how it was caused….Juerg Moxy is better than I thought), while I’m desaturating my VL to 20% my other muscles are really not used that much, if his muscles are balanced closer and they all desaturate equally from 80% to 40% during the same effort, I say we have decent desaturation, still room for improvement, but we have to start somewhere…That would also mean this could be super strong athlete with some work to do.
I guess I didn’t see enough data from world class athletes and how balanced their leg muscles are, so I'm unsure here.
Without sample data from other parts of the leg it is really hard to draw meaningful conclusion.
Did he reached the desaturation all three times with the same physiological stimulation ?
Not at all...
Could he use the power as a guide in this cases.
I will say yes, looking at power could help in this case, first example was steady ramp from 240W to 400W
Second example started to hard at 340W which is 100W higher created instant muscle compression, then he released power thinking “wow it is bit too hard” but that short power release didn’t really eliminate muscle compression, it takes longer for muscle compression to let blood in, so we see instant desaturation that stays for duration of the interval, there is slight SmO2 bump after power release but it seems insignificant.
Third interval was also way too hard and had to be abandoned.
Having said that, I think for 2nd interval to have similar SmO2 profile he would need to ramp it from about 220-380W power would have to be slightly less, so knowing that, he could use power, but if he would be to repeat the same power interval, no it would probably not work.