sentences:  Slivenko participated in the women's 69 kg class at the 2006 World Weightlifting Championships and won the gold medal, with a World Record snatch of 123 kg, and clean and jerking an additional 140 kg for a total of 263 kg.At the 2007 World Weightlifting Championships she won the gold medal again in the 69 kg class, with a World Record total of 276 kg.She won the silver medal in the 69 kg category at the 2008 Summer Olympics, with a total of 255 kg but was upgraded to gold as the original gold medalist was disqualified for doping.