Google says, the secondary growth spurt for men ends at around age 20. "Around" being the key word. It talks about genetics, too, and we're talking about genetic freaks when it comes to height. I can see an inch or two of growth for guys up to age 22 or 23. Tyrus Thomas supposedly grew an inch during his rookie season and offseason (he was 19 or 20). The weight thing is pretty obvious. For young people who work out and watch their diet, they are reducing body fat % and putting on muscle. Muscle is considerably heavier than fat. Anecdotally, my brother-in-law is about 3 inches shorter than me and outweighs me; he's a body builder who wins prizes for that sort of thing and he doesn't look "fat" in the least.
You took my suggestion and did the research but where is the link to what you're claiming? yeah, so did nearly every prospect that came up short in the combine... thats my point that keeps getting blown past. Statistics indicate it's pretty obvious we're being lied to with all of these post draft growth spurts. Heck on the Blazers alone we've been told by their PR department that Outlaw, Martell, Kaponen, Batum, and Oden have all grown significantly past their last measurements... I minored in biology in college and have worked for years in that field. I also work out 4-5 days a week with swimming biking weights and hoops. Believe me I'm well aware of muscle weighing more then fat and other basic facts about science. I'm also aware that weighing more is not necessarily a desirable thing in hoops... in fact it can be a detriment for the reasons I previously listed. Thats why NBA players have very different workouts and diets then NFL players... they don't want the extra weight. STOMP
I'm not a Thomas fan at all. In the playoffs against Detroit, he looked puny next to Sheed. Next season, he looked bigger next to Sheed. It's not hard to accept he grew an inch and put on some pounds. I agree that weight training for NBA players is different than for NFL players, but there are some obvious guys who've benefited by putting on bulk in the NBA or who looked like weight lifters. George McGinnis for one, Karl Malone would be another. It sure looks to me like Bynum has been hitting the weights in a big way, too.