A thousand pardons, Phreaknite, I didn't connect the two threads. I usually pay more attention than that.
http://www.bodybuilding.net/21755-8-post.html.
I had meant to say something about the weight work but I got so busy speachifying I forgot.
It is most commonly recommended to wait until adolescence to begin weight work. In general this means around age 13 although it varies (a clue: if your getting facial hair, pubic hair, or some more size down below that's a hint that puberty may have begun).
However there is no real reason to fear weightlifing at age 11 so long as it is done safely and with certain guidelines in mind. Most strength gains for preadolescents will be neural adaptations. It is possible to get a little muscle gain but the adrogens are just not in place to put on a lot yet. Yes, I saw "Little Hercules" too and besides the fact that the kid looks hideous I think it's pretty safe to say his "special diet" was spiked.
If it were my son at 11 I would start him out with moderate weights. In fact I would probably choose a weight he could do 12 to 15 reps with so I guess I should say fairly light. He would not up the weights until he could complete 3, if not 4 sets with that. Strict adherence to form, proper warmup, and post workout stretching would be mandatory. I would avoid the dynamic olympic lifts.
I'd start him with bodyweight squats until the above guidelines are met and then move on to a light empty bar. Keeping in mind that there is not a big relationship between doing bw squats and proper form for weighted squats so form still has to be learned. I wouldn't have him bench at first but would start with pushups. Setting records would not be a priority. Slow and steady would be the credo.
No deadlifts or any exercises that exert shearing forces on the spine. Plenty of rest between sets at least at first.