Bushey’s two-year period of ineligibility began on December 19, 2016, the date on which she acknowledged her use and possession of the prohibited substances.

In addition, Bushey has been disqualified from all competitive results obtained on and subsequent to June 11, 2016, the date she ordered the products containing prohibited substances, including forfeiture of any medals, points and prizes.

During USADA’s investigation, Bushey admitted to ordering and using products that listed ostarine and arimistane as ingredients, based on the recommendation of a trusted source.

Due to the circumstances that led Bushey to purchase the products, USADA determined that Bushey should receive a sanction reduction from four to two years.

The products containing prohibited substances that Bushey used were both added to the USADA High Risk List in January.

Ostarine, a selective androgen receptor modulator, and arimistane, an aromatase inhibitor, are found in adulterated dietary supplements.

They are unapproved drugs, which do not meet the Food and Drug Administration definition of a dietary ingredient, and may present a significant or unreasonable risk of illness or adverse health event to consumers.

"Both substances are prohibited at all times under the USADA Protocol for Olympic and Paralympic Movement Testing, the United States Olympic Committee National Anti-Doping Policies and the International Association of Athletics Federations Anti-Doping Rules, all of which have adopted the World Anti-Doping Code (the Code) and the World Anti-Doping Agency Prohibited List," USADA said in a statement.

In May, Jason Young and Imani Oliver were handed doping bans by USADA.

Oliver provided a positive urine sample containing ostarine at last year’s Olympic trials in Eugene and was given a one-year ban.

An investigation determined that the positive test resulted from her use of a product marketed as a dietary supplement that specifically listed ostarine as the primary active ingredient.

It was also discovered another dietary supplement contained arimistane.

USADA determined a reduction in Oliver’s period ineligibility was appropriate based on her voluntary admission of her anti-doping rule violation, full cooperation and substantial assistance to officials conducting the investigation.

Her one-year ban began on the date of her positive test on July 7, with competitive results obtained on and subsequent to March 16, 2016, the date she acknowledged ordering supplements that contained ostarine and arimistane, being removed.

Young, a discus thrower, was given a four-year ban relating to his use and possession of multiple prohibited growth hormone (GH) releasing factors, including a GH Secretagogue ipamorelin and GH Releasing Peptide GHRP-2.

He was found to have used and had possession of multiple growth hormone agents since January 2013.

The 36-year-old admitted to the offence on November 17 last year, with his four-year sanction beginning from the date.