Here's some more great info I just came across- a must read for parents and coaches of young female athletes.
The following study from Reuters.com shows a lowered risk of knee injuries for female athletes who start training at an early age.
Take a look:
http://www.reuters.com/article/2012/10/16/us-girls-muscle-training-idUSBRE89F1MM20121016If you have any questions about the article, or training young athletes in general, please feel free to contact me.
Best,
Coach Mike