Differences in Coaching Black and White Athletes

Do you think those differences in training response were primarily due to the racial differences of the athletes in question or simply differences in their needs as individuals? How many athletes are we talking about? You only mention those three. If he found this result from coaching say 30 athletes over several years I might be more receptive to the idea. But if your sample size is only the 3 you mentioned, you can’t extrapolate much from it, especially since they are at such high levels of performance which makes them statistical anomalies to begin with.