 He won two medals in the C2 event with a gold medal in 1996 and a bronze medal in 1992.Frank Adisson also won four medals in the C2 event at the ICF Canoe Slalom World Championships with two golds in (1991, 1997), a silver in (1995), and a bronze in (1993).He earned 5 more medals in the C2 team event (2 golds, 2 silvers and 1 bronze).