Born in Tashkent, Uzbek SSR, Shmonina competed for the Unified Team at the 1992 Summer Olympics, in the heats of the relay competition. When the team of Yelena Ruzina, Lyudmila Dzhigalova, Olga Nazarova and Olga Bryzgina won the final, Shmonina was also awarded the gold medal. Shmonina was hailed in Uzbekistan as the first Uzbek athlete to win an Olympic gold medal.
At the 1993 IAAF World Indoor Championships Shmonina tested positive for the anabolic steroid stanozolol and the Russian 4x400 relay team lost the gold medal. Shmonina was also handed a four-year ban from sports for the anti-doping rule violation.
|Representing Soviet Union|
|1989||European Indoor Championships||The Hague, Netherlands||2nd||400 m||52.36|
|World Indoor Championships||Budapest, Hungary||5th||400 m||52.44|
|1990||European Indoor Championships||Glasgow, Scotland||1st||400 m||51.22|
|Goodwill Games||Seattle, United States||7th||400 m|
|1st||4 × 400 m relay||3:23.70|
|European Championships||Split, Yugoslavia||7th||400 m||51.67|
|1st||4 × 400 m relay|
|1991||World Indoor Championships||Seville, Spain||2nd||4 × 400 m relay||3:27.95|
|Representing Unified Team|
|1992||European Indoor Championships||Genoa, Italy||5th||400 m||52.26|
|Olympic Games||Barcelona, Spain||1st||4 × 400 m relay|
|Representing Russia Russia|
|1993||World Indoor Championships||Toronto, Canada||DSQ (1st)||4 × 400 m relay||DSQ (3:28.90|
- At both the 1990 Europeans and 1992 Olympics Shmonina ran in the heats but not the final.
- At the 1993 World Indoors, the Russians were the original winners in 3:28.90. They were disqualified due to Shmonina failing a drugs test.
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