I have a hunch it has to do with the sort of fast twitch athleticism that is required by the NBA combined with the volume that even young people play competitiv

I have a hunch it has to do with the sort of fast twitch athleticism that is required by the NBA combined with the volume that even young people play competitively. There was a study of a soccer club leagues in Europe. They found the higher in competition you go, the slower twitch the players were. Why? Probably because they could simply play more without injury, even though faster twitch should provide an advantage in speed, etc. Instead though, faster twitch athletes can’t handle the work load and become injured. One suggestion would be to measure this, and tailor the training load individually. Many athletes would benefit from less training because that is how they are built.