A trampoline is a tight sheet of canvas that is attached with springs to a metal frame, and used for gymnastic springing and tumbling. The springs provide a rebounding force which thrusts the jumper high in the air.
The name originates from the Spanish trampolin, meaning a diving board. It is also assumed that the trampoline originated from the Inuit people, a group of Eskimo people who used to toss each other in the air on a walrus skin. Some evidence also indicates that in England, people were tossed in the air by a number of others holding a blanket.
The first modern trampoline was built around 1934 by two enterprising men, George Nissen and Larry Griswold. While it was initially used to train acrobats and gymnasts, it soon gained popularity in its own right.
There are two types of trampolines, recreational and competitive. Recreational trampolines can come in various shapes, although they are mostly circular or rectangular. They are made of water proof canvas or polythene material. They are less sturdy, and their springs are not all that strong.
The frame of a competitive trampoline is made of steel, rectangular in shape and has a size of...
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