Statement: boxing athlete receives sanction


Press Release

29th March 2018

The Australian Sports Anti-Doping Authority (ASADA) today acknowledged the decision of Boxing Australia to impose a two year ban on athlete Brock Shelley for the presence of a prohibited substance.

ASADA collected a urine sample from Mr Shelley on 26 June 2017 at the Super Quattro boxing event in Queensland. His sample tested positive for 1,3-Dimethylbutylamine (DMBA) an ingredient commonly found in supplements.

1,3-Dimethylbutylamine is a stimulant banned under class S6.b of the World Anti-Doping Agency’s (WADA) 2017 Prohibited List and is prohibited in-competition only.

ASADA’s longstanding advice is that athletes can never be 100% certain that any supplement is free from prohibited substances. Supplement companies are not required to prove that their products are safe, effective or even accurately labelled.

ASADA has issued a number of warnings about DMBA, including advice that up to one in five Australian supplements contain prohibited substances, often not listed on labels.

To reduce their risk of testing positive, ASADA recommends athletes consider not taking supplements at all, or if required, that they choose low-risk products which have been batch tested by an independent auditing company. Further information is available on the ASADA website:

Mr Shelley was deemed to have waived his right to a hearing and accepted the sanction on 4 January 2018. As a result, he is ineligible to participate, as an athlete or support person, in any sports that have adopted a World Anti-Doping Code compliant anti-doping policy until 4 January 2020.

Mr Shelley’s sanction also includes disqualification of results and forfeiture of any medals, points or prizes from the Super Quattro boxing event on 26 June 2017 and all other events from 26 June 2017 to 23 January 2018.

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