Many athletes use a sports psychologist, who may be the first to observe depression – especially when working with retired athletes.
One possible explanation is that nandrolone may be contained in improperly labeled nutritional supplements that many athletes use, some scientists have said.
So in 2011, the World Anti-Doping Agency convened a team of researchers to try to determine more accurately how many athletes use performance-enhancing drugs.
Benno M. Nigg has become a leading researcher on orthotics — those shoe inserts that many athletes use to try to prevent injuries.
In addition, many athletes use belts and straps to improve force generation.
Kiptanui, one of the most successful runners in Kenyan history, had alleged in February that many athletes use performance-enhancing drugs as a shortcut to wealth.
The three-times 3,000m steeplechase world champion and coach alleges many athletes use performance-enhancing drugs as a shortcut to wealth.
At the time, he was regularly--and legally--taking androstenedione, a steroid that many athletes use for its alleged muscle-building properties.
It's no secret, but not publicized, that many athletes use or even own their own hyperbaric chambers; Michael Phelps being one, and Tiger Woods another, who is building his own oxygen therapy room in his new home.
