sentences:  This is thought to indicate that doping was not the only reason East Germany was so successful (and more successful than West Germany in particular) in the Olympics, with professional training conditions also being significant.The practice of doping was implemented by a separate state, a former rival who was far less successful.The medal tally of reunited Germany after 1990 was more comparable to that of East Germany before 1990 than of West Germany before 1990.