Before revision: AAS were placed on the list of banned substances of the International Olympic Committee (IOC) in 1976, and a decade later the committee introduced ' out-of-competition ' doping tests because many athletes used AAS in their training period rather than during competition.
After revision: AAS were placed on the list of banned substances of the International Olympic Committee (IOC) in 1976, and a decade later the committee introduced " out-of-competition ", doping tests because many athletes used AAS in their training period rather than during competition.