Former Netherlands international and World Cup finalist Johnny Rep has admitted to doping during the 1970s.

The confession comes after a German study on doping has raised questions about several German national teams, including the 1974 World Cup-winning team.

Rep was a member of the Netherlands side that made it into back-to-back World Cup finals in 1974 and 1978.

In an interview with RTV Noord-Holland, the 61-year-old, also a member of Ajax’s European Cup-winning side in 1973, confessed to doping during his playing days and added that this was common practice amongst players.

“Indeed I took an amphetamine pill before a European Cup game. But that was not that extraordinary,” Rep said. “Looking back you think there maybe was something. But what do you think about the South Americans we faced in the Club World Cup with Ajax? They were stiff through amphetamine.”

Rep, who won 42 caps for his country, also believes that something was wrong with the Brazil and Uruguay sides that Netherlands faced during the 1974 World Cup.

“They were totally wild, but you only realise that later when you look back on it,” he said.

The controversial doping issue has been widely discussed in Germany throughout the past week.

A comprehensive doping study conducted by Berlin’s Humboldt University and commissioned by the Federal Institute of Sport Science had suggested a systematic doping system used by the former West Germany. It linked the German national teams from 1954, 1966 and 1974, who all reached World Cup finals, with doping.

The German Football Association and former Germany internationals Franz Beckenbauer and Uwe Seeler have rejected allegations that the 1966 side used performance-enhancing drugs during the tournament.