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Trampoline is a device consisting of a taut, strong fabric stretched between steel frames using a number of coil springs. People are jumping on trampolines for entertainment and competition.
The fabric (often referred to as a "bounce pad" or "trampoline") that the user bounces does not have elasticity on its own; elasticity is provided by a spring attached to the frame, which stores potential energy.
The frame of competitive trampoline is made of steel, which can be folded and transported to the competition site. The trampoline is a rectangular 4.28 x 2.14 m (14 ft 1 in x 7 ft 0 in) mounted in a 5.05 x 2.91 m (17 ft x 10 ft) frame [8] with approximately 110 steel springs (actual number may vary from manufacturer to manufacturer). The bed is made of strong fabric, although it is not elastic in itself. Spring only. Fabric can be woven with webbing, which is the most commonly used material. But at the 2007 World Championships in Quebec City, Ross beds (or two) were made of thin single threads. This bed adds some extra height to the rebound plate.
Using trampolines can be dangerous. Organized clubs and gymnasiums usually have large safety ends with foam pads on both ends, and observers are placed beside trampoline to prevent falling or falling athletes from falling down. In 1999, the U.S. Consumer Product Safety Commission estimated that 100000 people were admitted to hospital emergency rooms for trampoline injuries.
Because of the large number of people involved and the low safety standards, the majority of injuries occurred in private owned trampoline or commercial trampoline facilities, rather than in organized gymnasiums.
The CBC TV market found that the Canadian trampoline park industry is not regulated, its padding and foam pits are deep, self inspection and maintenance standards are different, and there is no need to report injuries. It was also noted that, in general, there were too few staff to enforce the rules and that promotional advertising often indicated that participants had somersaults, even in the absence of appropriate training, which were extremely dangerous. All trampoline parks rely on exemption from liability, in which case the signer bears the risk of the activity, including the risk of injury due to the fault of the enterprise itself or improper maintenance of the equipment, rather than strengthening safety standards and supervision.
Jumping from a trampoline can cause a fall of 3-4 meters (10-13 feet) from the rebound peak to the ground, or into suspension springs and frames. In recent years, there has been an increase in the number of family trampolines and a corresponding increase in the number of reported injuries. Some medical organizations recommend banning the use of these devices in the home.
Authorities suggest that only one person should be allowed to jump down at a time in order to avoid collisions and people being ejected in unexpected or higher than expected directions. One of the most common sources of injury is multiple users jumping on the trampoline at the same time. Often, this causes users to bounce back and get hurt. Many people suffered from fractures as they landed badly after hitting another user.
The domestic entertainment trampoline is not as strong as the competitive trampoline, and the spring strength is weak. They can have a variety of shapes, although most are circular, octagonal, or rectangular. The fabric is usually waterproof canvas or polypropylene woven material. Like competitive trampolines, recreational trampolines are usually made of spiral steel springs to provide resilience, but there are also springless trampolines.
Trampoline has been used by science teachers to explain Newton's three laws of motion and "elastic collision".
In collaboration with the University of Bremen and the German Aerospace Center (DLR), Bremen, Germany machtWissen.de The company has developed a weight-loss demonstrator "gravity jumper" based on trampoline. Because of the acceleration during the jump, in addition to the usual gravity, there is also an acceleration force. When the two forces add up, the people on the trampoline seem to be heavier. Once the jumper leaves the trampoline, he is in free fall, which means that the jumper does not seem to have weight and does not feel accelerated by gravity. Everyone will receive a triaxial acceleration sensor and fasten it to them with a belt. The sensor transmits the flight path data to the monitor. The monitor shows the acceleration process, including the weightlessness phase. The acceleration interaction between trampoline and weightlessness becomes obvious.
The first trampoline World Championships were held in London in 1964 by Ted Blake of Nissen. The first world champions were the Americans, Dan Millman and Judy will cline. Klein continues to lead the pack and become the most decorated trampoline champion of all time.
One of the first pioneers of trampoline as a competitive sport was Jeff Hennessy, a coach at the University of Louisiana at Lafayette. Hennessy also coached the American trampoline team, producing more world champions than anyone else. His daughter, Leigh Hennessy, is his world champion. Jeff and Leigh Hennessy are both in the US Gymnastics Hall of fame.
Since 2000, the competitive gymnastics of trampoline has become a part of the Olympic Games. On modern competitive trampolines, skilled athletes can bounce to a height of 10 meters (33 feet) and perform multiple somersaults. Trampolines also compete in slamball (a variant of basketball) and bossaball (a variant of volleyball).
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