not sure why you all are so focused on EPO and HGH. EPO was likely a factor for Wang's distance runs in 93, but the 80s sprint and throw records were all about testosterone and related anabolics. They didn't have a very good test at all until around 83 Pan Am games and into the late 80s the testing still wasn't frequent enough or good enough to catch someone using it to build muscle and then stopping before competitions. The men were using as well, but testosterone gives a much bigger advantage to women because their natural levels are so much lower.