Stryzhak competed in her first Parlympics at the 2000 Games in Sydney, Australia. There she won a bronze medal in the women's 100 metres - T38 event and finished fourth in the women's 200 metres - T38 event. She was back in the Ukrainian team for the 2004 Summer Paralympics in Athens, Greece, adding a second bronze medal, this time in the women's 400 metres (T38). Stryzhak followed this with her most successful Games to date, winning two gold medals at the 2008 Summer Paralympics in Beijing, China. The first was in the women's 100 metres and the second in the women's 200 metres. Her fourth consecutive Games was London 2012 adding two more bronze medals in the 100m and 200m sprints and a silver in her new event, the long jump.