Hello, it is very kind of you that you answered my questions ans conserned with this matter.

Yes, he has added at least 10 cm to his lenght last year, as the previous one. He is growing very fast.
His bone age is appropriate with his age.
The dpctor expected that he is going to be almost 190 cm or more.

He my son also slouch/slump when he sits, even standing.
he is a professional basketball player. He has a daily trainig for anour 1,5 hours He sometimes sits on the bench and plays some, we can say that he plays 1 quarter at every match, in average.
The doctor said that he has short upper leg muscles. He said that he has to stretch them. And he has weak abdominal muscles and offered a group of exercises daily.

I aggree with you: In general it is not wise to overtrain a childs body when the child is still growing. He really likes and wants to play basketball. And, to be a professional basketball player, he has to work hard. Is there a way to prepare his body for the trainig before the trainig session, so that his body is not hurt again?

The basketball club he is playing in does not offer a guidance all about these. The trainer is more concerned in the play not the players.

I really very thank you for concerning and showing way.
With my best wishes about Christmas and the new year.

Sincerely,

Berrin Sevgi