Slovenia is a natural sports venue, with many Slovenians actively practicing sports. A variety of sports are played in Slovenia on a professional level, with top international successes in handball, basketball, volleyball, association football, ice hockey, rowing, swimming, tennis, boxing, climbing, road cycling and athletics. Prior to World War II, gymnastics and fencing used to be the most popular sports in Slovenia, with athletes like Leon Štukelj and Miroslav Cerar gaining gold Olympic medals. Association football gained popularity in the interwar period. After 1945, basketball, handball and volleyball have become popular among Slovenians, and from the mid-1970s onward, winter sports have, as well. Since 1992, Slovenian sportspeople have won 45 Olympic medals, including ten gold medals, and 24 Paralympic medals with four golds.