Common, I think that, instead, physiology has to explain HOW IS POSSIBLE TO REACH RESULTS OF MY ATHLETES WITHOUT DOPING, if really doping works. You continue to speak about opinions, not supported by any scientific evidence, because NEVER there was any experimentation with top athletes using the same type of training and looking at their results WITHOUT doping and WITH doping.
If you know something about what we can call "Scientific experimentation", you know that, in this case, the system used is the "doppio cieco" in Italian, that we can translate as double-blind. We give to the same subject some substance, or some placebo, but he doesn't know, and we see the results. Do you think somebody had an experimentation like this in pharmacology or physiology ?
So, you have only two possibilities :
1) You believe I'm a cheater, a lier, a doper, and I attack for removing from myself and my athletes any suspicion of doping, because ALL my athletes were doped (but in this case, because never any my athlete or myself were in the middle of this problem, why I need to go in the storm ?)
2) You believe in the FACT that my athletes obtained their result completely clean, and in this case you have to change some opinion about the doping effect for every type of person.
About the fact that Kenyan athletes look at coaches and managers of other Countries, this is for the same reasons because the best African brains wants to study in US, or because fifty years ago if somebody needed a heart transplant had to go in South Africa to the equipe of dr. Barnard : because for improving everybody needs the support of the best professional persons in any area, and, not for their fault, black African Countries at the moment don't have in these roles the same level that we can find in other Countries, with more history and more background.
ENRICO FERMI (Italian) was the first discovering the nuclear fission, in US, and nobody asks WHY he didn't do it in Italy. The answer is easy : because it was not possible.
Do you know that the first real athletic coach, in the Italian Federation, was Boyd Comstock, from US ?
Why do you think there are so many Italian coaches of football (Capello, Ancelotti, Mancini, Di Matteo in UK, Spalletti winning Russian league in Russia, Zenga in UAE), of volley (there are 4 top Countries with Italian Coaches), now also of walking (Sandro Damilano is, from the beginning of October, the new responsible for China) ?
And, in any case, the situation is exactly the opposite :
about 25 years ago, were European managers (the first was John Bicourt from UK, immediately after Kim McDonald) going to Kenya for developing athletes, according the new professional activity, able to produce economic incomes, while before athletics was for glory only. And only later some European coach arrived for working with the athletes, normally connected with some management. This is a very different situation from what happens in US, where Kenyans athletes went (and continue to go) as students, and their activity is out of the professional circuit.