Kelli Smith will miss the Olympics after admitting to using EPO, a performance-enhancing drug.
It took years, he says, to show that caffeine had a performance-enhancing effect.
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Kallon, who is expecting the hear the results of the test on his 'B' sample very soon, denied being guilty of using a performance-enhancing substance.
Also uncertain is whether the 2006 Tour de France winner can clear his name after officials accused him of allegedly using a performance-enhancing drug--a charge he denies.
"There's definitely a performance-enhancing effect if you use things that improve oxygen transport to the tissue, " says Larry Bowers, an expert on athletic drug testing and senior managing director of the U.S. Anti-Doping Agency.
The agency was expected to capitalize on Braun capturing the MVP award last season but put those plans on hold after it was leaked in December that Braun had tested positive for a performance-enhancing drug, a charge Bruan always denied.
Armstrong got to say his piece and also give his portfolio a little performance-enhancing boost.
Can we just all accept the fact that all of baseball -- players, management, owners, the unions -- turned a blind eye to performance-enhancing drugs ravaging the sport?
In 2012 the Giants lost a superstar outfielder to performance-enhancing drug violations (Melky Cabrera), lost a star relief pitcher (Brian Wilson) to season-ending surgery, and lost their Cy Young award-winning starting pitcher (Lincecum), to what seems like the pressures born of a gargantuan contract.
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The House committee is investigating the Mitchell Report on steroid use in baseball, which cited McNamee's claims to have injected Clemens more than a dozen times with performance-enhancing drugs.
Last week, the U.S. Anti-Doping Agency released the evidence it had compiled against Lance Armstrong, the embattled cyclist who has had his seven Tour de France victories stripped as a result of his performance-enhancing drug scandal.
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Although Strava says it weeds out belief-defying performance claims, a KOM conceivably could be achieved on a motorcycle, not to mention with performance-enhancing drugs.
And that was before a January report in Miami New Times alleging he received performance-enhancing drugs from a Florida anti-aging clinic.
It may also be no coincidence that the testing of amateurs is well under way in Florida, home to countless anti-aging clinics that are a common source of testosterone and other performance-enhancing drugs.
He says anonymous surveys of athletes indicate that only a tenth of them use performance-enhancing drugs.
So far, if a drug or any other performance-enhancing technology can be used, it has been used.
They had called witnesses to a federal grand jury in Los Angeles, but they apparently determined they lacked evidence to bring a charge that Armstrong used performance-enhancing drugs.
He later sued the author of a book that accused him of having used performance-enhancing drugs and the International Cycling Union cleared him of 1999 doping allegations in a 2006 report.
They've been locked in a bitter public dispute for weeks over performance-enhancing drugs, and they went to Congress yesterday.
Marion Jones went to jail after being convicted of lying to a grand jury about her use of performance-enhancing drugs.
Rodriguez was No. 9 on the 2010 version of the jersey list, just a year after admitting he has used performance-enhancing drugs.
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Mr. Bonds deserved prison because his misstatements were part of a pattern of behavior that included using performance-enhancing drugs and cheating on his wife, he said.
The Miami New Times reported last week that Rodriguez is included in records the paper claims show he bought performance-enhancing drugs from a defunct Florida anti-aging clinic.
More recently, steroids and other performance-enhancing drugs made a lot of normal players larger than they should have been, and may have played a quiet role in causing some of the injuries that were blamed on a player's bulk.
Mr. Armstrong refused to address a story that had caused significant controversy during his career: an episode in 1996 in which some people said they had heard him admit using performance-enhancing drugs to a doctor inside an Indiana hospital room.
The combination of Rodriguez's undergoing another hip surgery earlier this month and Major League Baseball's investigation into whether several players, including Rodriguez, received performance-enhancing drugs from a South Florida anti-aging clinic raises the once-unthinkable possibility that the two parties may divorce.
In the case of the USPS sponsorship, he was required to sign a contract stating that he would not take performance-enhancing drugs.
Major League Baseball said it is investigating reports that a South Florida anti-aging clinic supplied performance-enhancing drugs to several players, including Yankees slugger Alex Rodriguez, from 2009 to 2012.
Major League Baseball is investigating allegations that a South Florida anti-aging clinic supplied performance-enhancing drugs to several players, including New York Yankees slugger Alex Rodriguez, from 2009 to 2012.
The Miami New Times said Tuesday that the three-time AL MVP bought human growth hormone and other performance-enhancing substances during 2009-12 from Biogenesis of America LLC, a now-closed anti-aging clinic in Coral Cables, Fla.
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