Her younger brother Kirill Antyukh is a former competitive sprinter, who turned to bobsleigh, and was part of the reserve Russian squad for the 2014 Winter Olympics.

[8] On 8 August 2012, Antyukh, then 31 years old, won the gold medal in the 400 metres hurdles at the 2012 Olympic Games in London, with a personal best time of 52.70 seconds.

[15] In 2019, all Russians, including Antyukh, were banned by the World Anti-Doping Agency from competing in international track and field events representing Russia for a four year period.

The Athletics Integrity Unit said the cases were based on an investigation into Russian doping for the World Anti-Doping Agency presented in 2016 by Canadian lawyer Richard McLaren.

[18][19] In October 2022, more than 10 years and 2 months after the race, her results from July 2012 to June 2013 were disqualified, stripping her of the gold medal in the 400 m hurdles at the 2012 Summer Olympics, with the new recipient being the former silver medalist, American Lashinda Demus.