[masraum]

Well, the two are developed differently. The Gym routine is usually designed to build muscle size and possibly ultimate capacity ("I was able to press 350# three times today!" type of thing)

I can only assume that what you are talking about with real world muscle is some guy that hefts 50# bags of concrete all day every day for his living. His muscles are defined by what they do, and are defined by functionality.

I would certainly assume that the two types will yield people with 2 different sets of abilities.

I think you could go to the gym and build muscles more like the real world muscles by doing more reps of less weight, but I'm not sure that with machines and free weights that you could match the range of motion and muscles worked by someone who is moving naturally in the course of the day. You'd probably have to do a lot of different stuff. I've never been a boxer or trained as a boxer, but based on the type of stuff that you always see on TV, those guys, swimmers, gymnasts, they probably have muscles that are more like "real world" muscles.