As a sport, skating is divided into ice skating and roller skating but the former predominates. The world governing body for ice skating is the International Skating Union (ISU), which was founded in 1892 and is based in Lausanne. The essential ice skating disciplines are figure skating (which includes ice dancing) and speed skating. Roller skating includes the modern sport of skateboarding. Figure skating has been a Winter Olympic sport since the first Games in 1908. Speed skating was first contested at the Winter Olympics in 1924.