International Olympic Committee
The IOC organises the modern Olympic Games and Youth Olympic Games, held in summer and winter, every four years. The first Summer Olympics organised by the IOC was held in Athens, Greece, in 1896; the first Winter Olympics was in Chamonix, France, in 1924. Until 1992, both Summer and Winter Olympics were held in the same year. After that year, however, the IOC shifted the Winter Olympics to the even years between Summer Games, to help space the planning of the two events from one another, and improve the financial balance of the IOC, which receives greater income on Olympic years. The first Summer Youth Olympics were in Singapore in 2010 and the first Winter Youth Olympics were held in Innsbruck in 2012.
Winter Paralympic Games
Sepp Zwicknagl, a pioneer of snow sports for disabled athletes, was a double-leg amputee Austrian skier who experimented skiing using prosthetics. His work helped pioneer technological advances for people with disabilities who wished to participate in winter sports. Advances were slow and it was not until 1974 that the first official world ski competition for physically impaired athletes, featuring downhill and a cross-country skiing, was held. The first Winter Paralympics were held in 1976 at Örnsköldsvik, Sweden from February 21–28. Alpine and Nordic skiing for amputees and visually impaired athletes where the main events but ice sledge racing was included as a demonstration event. There were 198 participating athletes from 16 countries, and it was the first time athletes with impairments other than wheelchair athletes were permitted to compete.