成人快手

Cycling's Lance Armstrong, sprinters Ben Johnson and Marion Jones, Baseball's Alex Rodriguez. The list of athletes caught doping over the years is as extensive as the medals they have won.

And the allegations keep coming. This week, just a fortnight before the World Athletics Championships takes place in Beijing - fresh accusations. A whistleblower at the IAAF, the world governing body for athletics, leaked a decade's worth of athletes blood test results, which is claimed to show over 800 suspicious results - many from Olympic medallists.

The IAAF President Lamine Diack however says the allegations, and of course that's just what they are at the moment, are unfounded.

The cloud of suspicion that covers not only athletics, but professional sport as a whole, has led some to wonder why bother?

Would sport be better off if performance enhancing drugs were regulated as opposed to banned?

Sportshour's Sarah Mulkerrins discussed the issue with sports writer Robert Silverman and Chuck Gallagher, author of "Monday Morning Ethics".

Photo: Lance Armstrong celebrating as he crosses the finish line and wins the 17th stage of the 91st Tour de France July 2004. (Credit: PATRICK KOVARIK/AFP/Getty Images)

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