^Absolutely. The myostatin inhibitors that jacked up those mice, I'm not sure if people are using those yet, at least consenting to it, because those look like they would probably kill people. Maybe there are some test subjects somewhere who don't know what they're being given. It should be pretty obvious when people start using those and walking around in public.
But the ones that up-regulate RBC production and thus oxygen transport, and allow endurance athletes to go harder longer, a German olympic coach was caught trying to buy them in 2006 I think. I bet elite endurance athletes are already all over those.