It does but it is a double edged sword. If that is the expectation and that is what people do then that is what people are going to do. If an older, or younger, or injured person sees their like doing machine exercises then they will too. @Jim Lauerman 's post reveals progression, sorting out issues and moving on.....yes, Jim is 69 but he could be a 31 year old desk worker. And maybe some people will reach their limits or be limited or be slower on a progressive scale compared to the athletic population BUT age isn't the barrier, it's mindset. If a 60 year old walks into a gym and sees another 60 year old whacking out some snatches or lifting heavy or using the rings or doing a planche then that would alter their expectations. It may represent unrealistic expectations too, yes for some, but in general age shouldn't be a, or THE, limiting factor.....movement is. Plenty of young people are affected by the very same issues. I may change my mind in a couple of years from now when I hit that 56 mark, haha!