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Encyclopedia > Trampoline
A youth at the peak of his jump on a home trampoline

A trampoline is a gymnastic and recreational device consisting of a piece of taut, strong fabric stretched over a steel frame using many coiled springs to provide a rebounding force which propels the jumper high into the air. In a trampoline, the fabric is not elastic itself, the elasticity is provided by the springs which connect it to the frame. A trampoline is a gymnastics and recreation device. ... Image File history File links Download high resolution version (2272x1704, 1619 KB) A youth at the peak of his jump on a trampoline. ... Image File history File links Download high resolution version (2272x1704, 1619 KB) A youth at the peak of his jump on a trampoline. ... Gymnastics is a sport involving the performance of sequences of movements requiring physical strength, flexibility, and kinaesthetic awareness. ... For the 1914 Charlie Chaplin film, see Recreation (film). ... Helical or coil springs designed for tension A spring is a flexible elastic object used to store mechanical energy. ...

Contents

History

Early trampoline-like devices

It could be said that a kind of trampolining was done by the Inuit people who used to toss each other into the air on a walrus skin, something like the sheet used by firemen to catch people jumping out of burning buildings. For other uses, see Inuit (disambiguation). ... Binomial name (Linnaeus, 1758) Distribution of Walrus Subspecies Walruses (Odobenus rosmarus) are large semi-aquatic mammals that live in the cold Arctic seas of the Northern Hemisphere. ...


There also is some evidence of people in England having been tossed into the air by a number of people holding a blanket. For other uses, see England (disambiguation). ...


These may not be the true antecedents of the modern sport of trampolining, but it is certain that in the early years of the 20th century some acrobats used a "bouncing bed" on the stage to amuse audiences. The bouncing bed was in reality a form of small trampoline covered by bedclothes on which the acrobats performed mostly comedy routines. (19th century - 20th century - 21st century - more centuries) Decades: 1900s 1910s 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s As a means of recording the passage of time, the 20th century was that century which lasted from 1901–2000 in the sense of the Gregorian calendar (1900–1999...


According to circus folklore, the trampoline was supposedly first developed by an artiste called Du Trampolin who saw the possibility of using the trapeze safety net as a form of propulsion and landing device and experimented with different systems of suspension, eventually reducing the net to a practical size for separate performance. While there were trampoline like devices used for shows and in the circus, the story of Du Trampolin is probably a myth and no documentary evidence has been found to support it. This article needs to be cleaned up to conform to a higher standard of quality. ...


The modern trampoline

The first modern trampoline was built by George Nissen and Larry Griswold around 1934. Nissen was a gymnastics and diving competitor and 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. It was initially used to train tumblers but soon became popular in its own right. The name comes from the Spanish trampolín meaning a diving board. George Nissen heard the word on a demonstration tour in Mexico in the late 1930s and decided to use an anglicized form as the trademark for the apparatus. George Nissen, (Born 1914 in Blairtown, Iowa) is an American gymnast and inventor who developed the modern trampoline and made trampolining a worldwide sport. ... Larry Griswold, (Died August 24, 1996), known as The Diving Fool, he was an American gymnast and entertainer who was involved in the early development of the trampoline. ... Year 1934 (MCMXXXIV) was a common year starting on Monday (link will display full 1934 calendar) of the Gregorian calendar. ... Gymnastics is a sport involving the performance of sequences of movements requiring physical strength, flexibility, balance, endurance, and kinesthetic awareness, such as handsprings, handstands, split leaps, aerials and cartwheels. ... For other uses, see Dive. ... Wiktionary has a definition of: Tumbler Tumbler is a part of a lock whose position must be changed by a key in order to release the bolt. ... The University of Iowa, also commonly called Iowa or U of I, is a major national research university located on a campus in Iowa City, Iowa, USA, on the banks of the Iowa River in East Central Iowa. ... An acrobat below a balloon Trapeze artists, in lithograph by Calvert Litho. ... For other uses, see Dive. ... Face The 1930s (years from 1930–1939) were described as an abrupt shift to more radical and conservative lifestyles, as countries were struggling to find a solution to the Great Depression, also known in Europe as the World Depression. ...


In 1942 Griswold and Nissen created the Griswold-Nissen Trampoline & Tumbling Company, and began making trampolines commercially in Cedar Rapids, Iowa. Year 1942 (MCMXLII) was a common year starting on Thursday (the link will display the full 1942 calendar) of the Gregorian calendar. ... Nickname: Location in the State of Iowa Coordinates: , Country United States State Iowa County Linn County Incorporated 1849 Government  - Mayor Kay Halloran Area  - City  64. ...


Use in flight and astronaut training

During World War II, the United States Navy Flight School developed the use of the trampoline in its training of pilots and navigators, giving them concentrated practice in spatial orientation that had not been possible before. After the war, the development of the space flight programme again brought the trampoline into use to help train both American and Soviet astronauts, giving them experience of variable body positions in flight. Combatants Allied powers: China France Great Britain Soviet Union United States and others Axis powers: Germany Italy Japan and others Commanders Chiang Kai-shek Charles de Gaulle Winston Churchill Joseph Stalin Franklin Roosevelt Adolf Hitler Benito Mussolini Hideki Tōjō Casualties Military dead: 17,000,000 Civilian dead: 33,000... Currently, the most common technology for space transport is rocket propulsion, which expels matter to provide a net forward thrust. ... Astronaut Bruce McCandless II using a manned maneuvering unit outside the U.S. Space Shuttle Challenger in 1984. ...


Competitive trampoline sports

Main article: trampolining

The competitive gymnastic sport of trampolining has been developed and it has been part of the Olympic Games since 2000. On a modern competitive trampoline a skilled athlete can bounce to a height of up to ten metres, performing multiple somersaults and twists. Trampolines also feature in the competitive sport of Slamball, a variant of basketball, and Bossaball, a variant of volleyball. Trampolining is a competitive sport in which gymnasts perform acrobatics while bouncing on a trampoline. ... Trampolining is a competitive sport in which gymnasts perform acrobatics while bouncing on a trampoline. ... The five Olympic rings were designed in 1913, adopted in 1914 and debuted at the Games at Antwerp, 1920. ... Facsimile of a Woodcut in Exercises in Leaping and Vaulting, by A. Tuccaro: 4to (Paris, 1599). ... Slamball is a four player team sport loosely based on basketball. ... This article is about the sport. ... Bossaball court Bossaball court. ... Volleyball is an Olympic sport in which two teams separated by a high net use their hands, arms or (rarely) other parts of their bodies to hit a ball back and forth over the net. ...


Cross-training for other sports

There are a number of other sports which use trampolines to help develop and hone acrobatic skills in training before they are used in the actual sporting venue. Examples of this can be found in diving, gymnastics, freestyle skiing, water skiing, snowboarding and Wrestling For other uses, see Dive. ... Gymnastics is a sport involving the performance of sequences of movements requiring physical strength, flexibility, balance, endurance, and kinesthetic awareness, such as handsprings, handstands, split leaps, aerials and cartwheels. ... Freestyle skiing began in the 1930s, when Norwegian skiers began performing acrobatics during alpine and cross-country training. ... // Water skiing began in 1922 when Ralph Samuelson strapped two boards to his feet and rigged a clothesline up to his boat on Lake Pepin in Lake City, Minnesota. ... Snowboarder in a half-pipe Snowboarder riding off cornice Snowboarding contributes greatly to the economies of ski resorts Snowboarding is a sport that involves descending a snow-covered slope on a snowboard that is attached to ones feet using a boot/binding interface. ... Ancient Greek wrestlers (Pankratiasts) Wrestling is the act of physical engagement between two unarmed persons, in which each wrestler strives to get an advantage over or control of his opponent. ...


Construction

There are two types of trampoline, recreational and competitive.


Traditional recreational trampoline design uses coiled steel springs to provide the rebounding force. A 2001 invention by New Zealander Dr. Keith Vivian Alexander of the University of Canterbury replaces the springs on the edge of a trampoline with pultruded fibreglass rods. This spring free "soft edge" design uses cantilivered rods installed below the plane of the jumping surface to provide the rebounding force. A user cannot come into direct contact with the rods so safety is claimed to be improved.[1] Rod based designs necessitate the use of alternative materials and additional structural members. This page is about the New Zealand University. ... Pultrusion is a continuous process of manufacturing of composite materials with constant cross-section whereby reinforcing fibers are pulled through a resin, possibly followed by a separate preforming system, and into a heated die, where the resin undergoes polymerization. ... There is a disputed proposal to merge this article with glass-reinforced plastic. ...


Recreational trampolines are less sturdily constructed than competitive ones and their springs are less strong. They may be of various shapes, though the most usual are circular, octagonal or rectangular. The fabric is usually a waterproof canvas or woven Polypropylene material. Look up Canvas in Wiktionary, the free dictionary. ... Polypropylene lid of a Tic Tacs box, with a living hinge and the resin identification code under its flap Micrograph of polypropylene Polypropylene or polypropene (PP) is a thermoplastic polymer, made by the chemical industry and used in a wide variety of applications, including food packaging, ropes, textiles, plastic parts...


The frame of a competitive trampoline is made of steel and can be made to fold up for transportation to competition venues. The trampoline bed is rectangular 428 cm (approx. 14 feet) by 214 cm (approx. 7 feet) in size[1] fitted into the 520cm x 305cm (17' x 10') frame with around 110 steel springs (actual number may vary by manufacturer). The bed is made of a strong fabric. The fabric can be woven from webbing which is the most commonly used material. However, in the 2007 World Championships to be held in Quebec City a Ross (or "Two-String") bed, woven from individual thin strings, will be used. Nickname: Motto: Don de Dieu feray valoir (I shall put Gods gift to good use; the Don de Dieu was Champlains ship) Coordinates: , Country Province Agglomeration Quebec City Statute of the city Capitale-Nationale Administrative Region Capitale-Nationale Founded 1608 by Samuel de Champlain Constitution date 1833 Government... David Ross (born April 30, 1950) is a Canadian trampolining coach and manufacturer of trampolines and trampoline equipment. ...


In any trampoline, the fabric bed is not elastic itself, the elasticity is provided only by the springs.


Safety

Using a trampoline can be unsafe, and in organized clubs and gyms there are usually spotters placed at each corner of the trampoline to try to break the fall of any athlete who loses control and falls. The majority of injuries happen on privately owned home trampolines. Bouncing off a trampoline can result in a fall of three or four metres from the peak of a bounce to the ground or a fall into the suspension springs and frame. There has been an increase in the number of home trampolines in recent years and a corresponding increase in the number of injuries reported leading some medical organizations to suggest that they be banned.[2]


Authorities recommend that only one person should be allowed to jump at a time to avoid collisions and people being catapulted in an unexpected direction or higher than they expect. It is possible to reduce the dangers by burying the trampoline so the bed is closer to the surrounding surface so any fall is less and having that area padded. Installing pads over the spring and frame will reduce the severity of impact injuries. One of the most common sources of serious injury is an attempt to perform somersaults without having proper training. In some cases, people land on their neck or head which can cause paralysis or even death. Having some training in a gym may also be beneficial in alerting people to possible hazards and provide techniques to avoid bad falls.[3]


Kits are now available for home trampolines that provide a retaining net around the trampoline and prevent users from bouncing over the edge. While these nets do prevent jumpers falling off the trampoline onto the ground, these falls are not the most common source of injury. US Patent 6319174 via CAMBIA Patent Lens[4]


Mini-trampolines

Small, usually round, trampolines (less than one metre in diameter), often called trampettes are sometimes used as part of a physical fitness regime. This so-called rebounding allows the user to gain many of the benefits of exercise with a low impact on knees and joints. This type of trampoline is usually kept in an indoor environment. These trampolines do not give a rebound as high as larger size recreational or competitive trampolines. This article does not cite any references or sources. ...


Notes

  1. ^ description of US patent6319174 from Patentstorm.us, retrieved 29 August 2007.

is the 241st day of the year (242nd in leap years) in the Gregorian calendar. ... Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era. ...

References

Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era. ... is the 103rd day of the year (104th in leap years) in the Gregorian calendar. ...

External links


  Results from FactBites:
 
Trampolining (0 words)
This apparently simple process of jumping from a trampoline is in fact a complex one which of course involves the two topics already discussed but I have so far ignored the part played by the arms in order to focus attention on one area at a time.
I would also use them as part of the early preparation of aspiring competitive beginners So that they develop a deeper understanding of the trampoline medium and their empathy with it.
To test the effectiveness of a straight arm swing, stand upright on the trampoline with the knees locked so that no leg push is possible.
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