Subject: What are some concepts of physics involved in the sport of gymnastics?

I'm writing a paper on gymnastics and the physics behind it. I need some 
concepts to start with. I was thinking along the lines of rotational interia.  
Do you know of any other resources (books, encylopedias, other websites, etc.) 
that link gymnastics with physics or even come close to it? I'm having trouble 
finding them. Thank you, Christine

Re: What are some concepts of physics involved in the sport of gymnastics?