an elevated, resilient webbed bed or canvas sheet supported by springs in a metal frame and used as a springboard for tumbling. Trampolining, or rebound tumbling, is an individual sport of acrobatic movements performed after rebounding into the air from the trampoline.
Although rebound tumbling has existed for centuries, it did not achieve wide popularity until the 20th century, when it became a featured attraction performed by circus acrobats. The modern sport was born in 1936 with the development of the present-day trampoline by American gymnast George Nissen.
![Trampoline dimensions. [Credit: Encyclopædia Britannica, Inc.]](http://images.bookrags.com/images/eb/76708.gif)
Trampoline dimensions. [Credit: Encyclopædia Britannica, Inc.]The first unofficial American trampolining competition took place in 1947, followed by the first official American championships in 1954. The sport was included in the Pan-American Games for the first time in 1955. In 1962 the first open international trampolining event took place in West Germany, after which the first world championship was held in England in 1964. Immediately after the 1964 competition, officials from participating countries met to form the International Trampoline Association, the sport's worldwide governing body. Trampoline gymnastics debuted as an Olympic sport in 2000.
A competition consists of one compulsory and one optional routine, with the winners of those events performing another optional routine. Each routine is limited to eight contacts with the trampoline, with competitors scored on difficulty, execution, and form.
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