Jumping stilts
Jumping stilts
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Jumping stilts

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Jumping stilts

Jumping stilts, bounce stilts or spring stilts are special stilts that allow the user to run, jump and perform various acrobatics. Spring stilts using fiberglass leaf springs were patented in the United States in 2004 under the trademark "PowerSkip", marketed for recreational and extreme sports use. Spring stilts are often mostly made of aluminium. Using these stilts is also called "bocking" or "powerbocking", derived from Alexander Böck, the stilts' inventor.

The act of "bocking" or "powerbocking" includes jumping, running, and performing acrobatics with elastic-like spring-loaded stilts. They can be used to jump great distances and allow the user to bounce over people and cars and to perform backflips.[citation needed] For some, it is an extreme sport; for others, it is a form of exercise, artistic expression and a form of entertainment.

The stilts are often referred to generically as bocks or powerbocks; as power stilts, jumping stilts, bounce stilts or spring stilts; or by their brand name.

Each boot consists of a foot-plate with snowboard type locking straps, rubber foot pad which is also commonly called a hoof, and a fibreglass leaf spring. Using only their weight, and few movements, the user is generally able to jump 3–5 ft (1–1.5 metres) off the ground and run up to 20 mph (32 km/h). They also give the ability to take up to 9-foot (2.7 metres) strides.

Jumping stilts were used in the closing ceremony of the 2008 Olympic games in Beijing.

They were originally patented by Alexander Böck, from Germany (European Patent EP 1 196 220 B1 on 2 July 2003, US Patent No. 6,719,671 B1 on 13 April 2004, both with a priority date of 20 July 1999), as "Powerskip". Many people also use common brand names to refer to them generically. Common brand names are 7 League Boots, Air-Trekkers, Powerizers, Pro-Jump, and Powerskips.

On 4 December 2010 Samuel Koch was heavily injured during the show Wetten, dass..? during a stunt where he attempted to jump over multiple moving cars in succession. He failed to clear one of the moving vehicles and was left tetraplegic after suffering severe injuries to his neck and spine.

Two competitions exist in France: the Nancy Power Days (since 2009) in Nancy and the Riser Winter Cup (since 2015) in Lille.[citation needed]

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