He talks about the big picture, how training fits in with life. On his website, he also talks a lot in regards to athletes and training. He had a 531 for athletes, and there are numerous testamonials on coaches/athletes whom have used the program successfully as part of a compete program (weights, conditioning, skills practice, etc.)
When in doubt, the 2nd edition is the go-to since it lays out the principles in greater detail. OR, you could wait for his upcoming new book, which apparently focuses on complete programing.