Bouncing (sport)
Bouncing (to bounce: hop, jump) or bocking / power bocking is a fun sport . Goes when bouncing, running, sprints, jumps, skips or saltiert of athletes with special jumping stilts that are strapped on the lower leg. The force to jump comes from an arched spring, which is compressed by the body weight of the person exercising it and thereby tensioned. The name Bocking refers to the German inventor of the jump stilts, Alexander Böck, who applied for a patent for these jump stilts in 1999. The jumping stilts (eng. Jumping stilts) are also called after its inventor Bocks called. The persons carrying on as Bocker or Power Bocker . In addition are the names flyjumper and Power Jumper in use.
Experienced bouncers can jump up to two meters high and five meters, do somersaults, show stunts or sprint at speeds of up to 45 km / h.
How the spring stilts work
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The ankle stilts essentially consist of a curved spring , a step surface for the foot, a knee bracket below the kneecap , a spring lever between the step surface and the curved spring, and a rubber sole for ground contact at the lower end of the spring. The spring can either be made of rubber coated metal or shatterproof fiberglass . The force to jump comes from an arched spring, which is compressed by the body weight of the person exercising it and thereby tensioned. After compression, the arched spring tries to straighten itself, releasing the previously stored force. The strength of the springs depends on the weight of the person exercising, as both too slack and tight springs impair the jumping ability.
As with all stilts , you have to keep moving or lean against a wall to avoid falling over.
Manufacturer
The jumping stilts have different names depending on the manufacturer. The biggest marketers are Pro-Jump, Poweriser, Powerstrider, FlyJumper, SpeedJumper, PowerSkip and 7meilenstiefel, although the type names are again different.
costs
The stilts are currently on sale for around € 200 to over € 1000. Wrist, elbow and knee protectors as well as wearing a helmet are recommended as protective equipment.
hazards
As with all stilts, there is a risk of falling from a great height. Since the jump stilts are strapped to the lower leg, you cannot simply jump out and down from the stilts to land your feet on the ground. Therefore there is a serious risk of falling. For this reason, it is advisable to wear a helmet, knee, elbow and wrist protectors.
In the ZDF television show Wetten, dass ..? On December 4, 2010, the game candidate Samuel Koch suffered serious injuries when he tried to jump on stilts with a somersault over a moving car. The contestant suffered a fracture of the cervical spine with spinal cord contusion and has been paraplegic ever since .
World record in backward somersault
The world record in backward somersaults - registered in the Guinness Book of Records - is held by "Half Animal" Jesus Villa. He made 19 back flips over 100 yards at John Carroll University on July 4, 2007.
Trivia
Jumping on stilts was demonstrated during the closing ceremony of the 2008 Olympic Games in Beijing.
See also
literature
Individual evidence
- ↑ Alexander Böck: Device to facilitate locomotion for one person. Google Patents, July 20, 1999, accessed May 18, 2014 .
- ↑ General Bocking Terms and History. (No longer available online.) ProJump.co.uk, archived from the original on May 18, 2014 ; accessed on May 18, 2014 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ Flyjumper / Powerjumper in the Hafencity
- ↑ Tae-Hyuk Yoon: Jumping device for exercise. Google Patents, January 17, 2002, accessed May 18, 2014 .
- ^ Beijing 2008 Olympic Games. Youtube video, accessed on May 18, 2014 .
