1. I doubt that either of the physiologists I know, or maybe any physiologists, have actually enhanced the performance of a real athlete by doping that athlete. If they did they wouldn't really be able to tell anyone about it anyway. and even if they could acknowledge what they did it still would not be conclusive because they'd have no way of knowing what that athlete would have done had they not been doped. But lots of people know what EPO does, whether it enhances athletic performance or not and the physiologists I asked about this said the idea that there can be a very small and select group of people for whom it doesn't work the same as it does on everyone else is nonsense. And again, if Renato really wants this idea taken as gospel it would help if he cited some knowledgeable people to confirm this idea. Maybe there are some and I've missed them but this is a subject where he has a serious vested interest in promoting the idea that the athletes he's working with, the ones getting the maximum results, are doing it because of their abilities and his coaching and not from PEDS
You doubt any physiologist actually enhanced the performance of a real athlete by doping that athlete. I'm with you, nobody tried.
But I have NO DOUBTS that they NEVER studied the effect of advanced and proper training (the training of the best athletes, volume, intensity, modulation, rest, recovery, etc...) of REAL TOP ATHLETES, and for that reason cannot have any clue about the effect of blood doping
WITH ATHLETES FOLLOWING FOR LONG PERIODS MODERN ADVANCED TRAINING IN ALTITUDE.
This is the reason because what physiologists say about blood manipulation for top athletes can't have credibility : they continue to study the effect of doping on the performances WITHOUT including in their studies the variable TRAINING, that absolutely don't know (otherwise never can exist stupid researches like the one of Pitsiladis with 15 kenyan boys and 15 scottish boys for demonstrating something everybody knows at that level (EPO can improve the performance of NOT TRAINED athletes), or consider Elite athletes 40 min far from the WR in Marathon, or consider "well trained" athletes who run 5 days per week one hour easy...).
The subject of their studies is not the same of their final reference when they want to apply to the best athletes the same parameters. It's like to study how to better a Fiat 500, and after to apply the same parameter to a Formula One.
For that reason, I don't care about physiologists who have nothing to do with training, and my convinctions are based on what I know many top athletes did in training (not only athletes whom I coach or coached, but athletes coached by other coach, too).
This doesn't mean some top athlete can use doping, but this only one time (the case of Abraham Kiptum) helped one athlete to reach the top of the World (and in 3 years only we could see how much improvement there was, in a event clearly still far from the possibilities of the best current specialists).