Cupérus served as the president of the federation for its first 43 years, during which time it welcomed new members and became associated with the nascent modern Olympic movement. In 1921 the organisation became the Fédération Internationale de Gymnastique ('International Gymnastic Federation') as it accepted national federations from non-European countries. At that time it had sixteen members and a participant in the organisation of the Olympic games, drawing up rules of competition and scoring methodology.
You can learn more about the history of the organisation from their website.
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