Hgh doesn't increase strength all that much. It does however increase bone density and all that old stuff which allow for more muscle and strength growth when adding steroids in the mix.I'm sure WSM would be more tested then the body building poor shows. Most likely HGH.
Bro you'd be surprised how much money is spent on trying to hide drugs from being detected from drug tests.
Bro in the Olympics there's heaps of drug cheats that are only caught ears later.
Mr Olympia and all that are a joke of drug testing lol.