“Mr. Vidarte says clenbuterol is given to cattle in Europe and could have seeped into his food and triggered the positive test.”
“The UCI seems to be giving Contador the benefit of the doubt and has said that the case warranted “further scientific investigation” because the Cologne laboratory which detected the clenbuterol is known to be able to detect the tiniest traces of drugs.”
“A banned substance which can be used to help lose weight and help breathing, clenbuterol is also known to boost performance by helping to increase muscle-to-fat ratios, which is why it is sometimes illegally used by meat producers.”
“Since clenbuterol is not a substance naturally produced by the human body, there is no level below which you get a pass.”
“But under the World Anti-Doping Code, clenbuterol is banned entirely.”
“Like salbutamol, clenbuterol is a Beta2 adrenergic agonist, which relaxes those smooth muscle groups over which you exercise no direct conscious control.”
“However, the actual effects of long-term clenbuterol intake on performance, muscle power, and overall health have been unclear.”
“There are reports that clenbuterol, which is used to fatten cattle before slaughter, continues to be administered illicitly by some ranchers in Spain.”
“Contador registered a minute trace of clenbuterol, which is listed as a zero-tolerance drug by WADA, from a test taken on a rest day at last year's Tour.”
“Contador is reported to have tested positive for a minute amount of a substance named clenbuterol, which is said to reduce fat, increase muscle mass, and assist breathing.”
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