I could be totally wrong but, I believe that these guys that seem to be injury prone, I think that it's mostly because they're lazy with their weight training and they're not getting the bodies in top FB playing condition. As a once upon a time weightlifter, I learn that it takes a very dedicated strong mind to get into it to where you get the most out of it.

Most people when they start weight training, it's over before they can get over that initial soreness right after they start bc it takes those muscles about 8 to 10 days to heal enough, and that's mostly bc they start out trying to do to much to fast and a few days after they are so sore they can barely move whatever muscle group they started out working. I started and stopped working out 3 or 4 different times before I ever stuck with it past that first soreness bc it's a biotch to talk yourself into going back and continue knowing how sore that you are.

I finally stuck with it by lifting really light weight 7 or reps of two sets the first two weeks, then I went to 10 reps 2 sets the 3d and 4th weeks and the soreness was nothing compared to what it was the other times I started and quit bc I tore my muscles down to much to fast. Anybody starting out should start light with 6,7, 8 reps with no more than 2 sets and slowly moving up the reps and the sets for at least a month before moving up in weight, reps, and sets. Do that and you will continue if you really want to build your body and get stronger.... Just thought that I would say this for anyone wanting to start lifting bc that was how I was finally able to stick with it, and once you start seeing those muscle grow, it makes you want to keep it up....