History
The first trampoline was built by Americans George Nissen and Larry Griswold in 1936. Nissen was a gymnastics and diving competitor, Griswold was a tumbler on the gymnastics team; both at the University of Iowa, USA. They had observed trapeze artists using a tight net to add entertainment value to their performance and experimented by stretching a piece of canvas, in which they had inserted grommets along each side, to an angle iron frame by means of coiled springs … Nissen explained that the name came from the Spanish "trampolín," meaning a diving board … We could not have said it better!
The double-mini trampoline developed from the common mini-tramp, it allows an even more acrobatic performance. After the run-up the competitors show one skill on the apparatus followed by a second skill onto a landing mat. Top-level athletes show double and triple somersaults with twists!
Fonte IWGA
By TrampNews