I took a boys team to the Peter Vidmar competition in Los Angeles in 2004. (photos)
Christopher Sommer’s gymnasts from Desert Devils, Mesa AZ were the most impressive I saw at the meet. I immediately introduced myself and congratulated his athletes.
As a coach, Sommers emphasizes conditioning. It showed in his athletes!
Check the DragonDoor.com website for a wealth of conditioning articles.
A good starting point is this article:
Building an Olympic Body through Bodyweight Conditioning, by Christopher Sommer
Gymnastics Coaching.com 