Sport Kayak.
Parfenovich competed for the Soviet Union at the Moscow Olympics and became the first canoer to win all three events he entered: K-1 500 m, K-2 500 m and K-2 1000 m. He also won twelve medals at the ICF Canoe Sprint World Championships, with nine golds (K-1 500 m: 1979, 1981-1983; K-2 500 m: 1979, 1981, 1982; K-2 1000 m: 1981, 1982) and three silvers (K-1 500 m: 1978, K-2 500 m: 1983, K-2 1000 m: 1983).
Parfenovich retired from competitions after learning that the 1984 will be boycotted by the Soviet Union. He then worked as an instructor for the Sport ministry of Belarus and served in the KGB and police forces. In 1995-2007 he headed the Canoe-Kayak Federation of Belarus and was a member of the Belarusian Olympic Committee. After that he trained canoers in Russia, and in 2013 became head coach of the Russian team.