American athletic trainer Alberto Salazar , who trained four-time English Olympic champion Mo Farah and other prominent athletes, was suspended four years, as part of a case investigated by the United States Anti-Doping Agency (USADA) .

The top anti-doping agency said Monday that an arbitration panel made a decision on the punishment for Salazar and endocrinologist Jeffrey Brown , for several infractions, including possessing and trafficking testosterone while working at the Nike Oregon Project (NOP), a center where they trained elite athletes.

Brown did consulting work for the NOP, and was a personal physician for some athletes. After a four-year investigation by the USADA, which began after the BBC gave details of some Salazar practices, including infusions of a legal dietary supplement, called L-carnitine, which supposedly improves athletic performance, was when He found evidence of doping.

The British chain added that marathoner Kara Goucher and Steve Magness , a former NOP coach, were among the witnesses who gave evidence in the case.

The USADA informed that it had received information from 30 witnesses in which all the doping plot that existed was evidenced and in which Salazar himself was involved.

The athletic federation of Great Britain opened its own investigation into Salazar and gave Farah, who competes for that country, permission to continue working with the coach.

Farah separated from Salazar in 2017 , on the grounds that he wanted to return to his country. Salazar, born in Cuba, also trained Galen Rupp , a silver medalist at the 2012 Olympic Games. Rupp and Farah have vehemently denied any wrongdoing.

The USADA reported that it had been based on more than 2,000 evidences between the two cases, and that the procedures included 5,800 pages of transcripts. "The athletes in these cases found the courage to speak and finally expose the truth," said USADA Director General Travis Tygart. "While working on the Nike Oregon Project, Mr. Salazar and Dr. Brown demonstrated that for them, winning was more important than the health and well-being of the athletes they swore to protect."

So far neither Salazar nor Brown have made any comment on the punishment that has been imposed and the result of the investigation carried out by the USADA.

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