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Swimming is the self-propulsion of a person through water, or other liquid, usually for recreation, sport, exercise, or survival. Locomotion is achieved through coordinated movement of the limbs and the body to achieve hydrodynamic thrust that results in directional motion. Humans can hold their breath underwater and undertake rudimentary locomotive swimming within weeks of birth, as a survival response. Swimming requires stamina, skills, and proper technique.
The trudgen is a swimming stroke sometimes known as the racing stroke, or the East Indian stroke. It is named after the English swimmer John Trudgen (1852–1902) and evolved out of sidestroke.
The butterfly is a swimming stroke swum on the chest, with both arms moving symmetrically, accompanied by the butterfly kick along with the movement of the hips and chest. It is the newest swimming style swum in competition, first swum in the early 1930s and originating out of the breaststroke.
Breaststroke is a swimming style in which the swimmer is on their chest and the torso does not rotate. It is the most popular recreational style due to the swimmer's head being out of the water a large portion of the time, and that it can be swum comfortably at slow speeds. In most swimming classes, beginners learn either the breaststroke or the freestyle first. However, at the competitive level, swimming breaststroke at speed requires endurance and strength comparable to other strokes. Some people refer to breaststroke as the "frog" stroke, as the arms and legs move somewhat like a frog swimming in the water. The stroke itself is the slowest of any competitive strokes and is thought to be the oldest of all swimming strokes.
Backstroke or back crawl is one of the four swimming styles used in competitive events regulated by FINA, and the only one of these styles swum on the back. This swimming style has the advantage of easy breathing, but the disadvantage of swimmers not being able to see where they are going. It also has a different start from the other three competition swimming styles. The swimming style is similar to an upside down front crawl or freestyle. Both backstroke and front crawl are long-axis strokes. In individual medley backstroke is the second style swum; in the medley relay it is the first style swum.
Medley swimming is a combination of four different swimming strokes into one race. This race is either swum by one swimmer as individual medley (IM) or by four swimmers as a medley relay.
The sidestroke is a swimming stroke, so named because the swimmer lies on one's side with asymmetric arm and leg motion. It is helpful as a lifesaving technique and is often used for long-distance swimming. The sidestroke allows the swimmer increased endurance because instead of working both arms and legs simultaneously in the same way, the side stroke uses them simultaneously but differently. A swimmer tired of exercising one side can turn over and use the other, the change of action helping the limbs to recover.
The flutter kick is a kicking movement used in both swimming and calisthenics.
Finning techniques are the skills and methods used by swimmers and underwater divers to propel themselves through the water and to maneuver when wearing swimfins. There are several styles used for propulsion, some of which are more suited to particular swimfin configurations. There are also techniques for positional maneuvering, such as rotation on the spot, which may not involve significant locational change. Use of the most appropriate finning style for the circumstances can increase propulsive efficiency, reduce fatigue, improve precision of maneuvering and control of the diver's position in the water, and thereby increase the task effectiveness of the diver and reduce the impact on the environment. Propulsion through water requires much more work than through air due to higher density and viscosity. Diving equipment which is bulky usually increases drag, and reduction of drag can significantly reduce the effort of finning. This can be done to some extent by streamlining diving equipment, and by swimming along the axis of least drag, which requires correct diver trim. Efficient production of thrust also reduces the effort required, but there are also situations where efficiency must be traded off against practical necessity related to the environment or task in hand, such as the ability to maneuver effectively and resistance to damage of the equipment.
Swimming lessons are the process of learning to swim. In most countries there is a definition of a number of swimming levels that are reached in the process of the curriculum. The respective certificates of swimming tests are required for further training in aquatic abilities. Many countries have defined a minimum swimming level that children should reach by the end of primary education, in most cases with the help of school swimming classes being part of the normal curriculum.
David "Dave" Charles Berkoff is an American former competition Hall of Fame swimmer, Olympic champion, and former world record-holder in two events. Berkoff was a backstroke specialist who won a total of four medals during his career at the Olympic Games in 1988 and 1992. He is best known for breaking the world record for the 100-meter backstroke three times, beginning at the 1988 Olympic trial preliminaries, becoming the first swimmer to go under 55 seconds for the event. He is also remembered for his powerful underwater backstroke start, the eponymous "Berkoff Blastoff" which after a strong push-off from the side of the pool used a horizontal body position with locked arms outstretched overhead and an undulating or wavelike aerodynamic dolphin kick to provide thrust and build speed.
Streamline form is a swimming technique that is used underwater in every stroke. At the start of a race or on a turn, streamline form is used, usually along with a dolphin kick or flutter kick, to create the least amount of resistance to help the swimmer propel as far as they can. Many factors contribute to the perfect streamline form and mastering this method increases a swimmer's speed. Streamline is one of the key fundamentals to mastering any stroke.
Combat side stroke or CSS is a variation of the side stroke that was developed by and taught to the United States Navy SEALs. The Combat Swimmer Stroke was developed for the United States Navy Seals by Former Navy SEAL Stew Smith (CSCS) and Terry Laughlin of Total Immersion Swimming.
The dolphin kick is a kicking movement used in swimming. It is frequently used by competitive swimmers during entry and turns, and as part of the Butterfly stroke.
Swimming is an individual or team racing sport that requires the use of one's entire body to move through water. The sport takes place in pools or open water. Competitive swimming is one of the most popular Olympic sports, with varied distance events in butterfly, backstroke, breaststroke, freestyle, and individual medley. In addition to these individual events, four swimmers can take part in either a freestyle or medley relay. A medley relay consists of four swimmers who will each swim a different stroke, ordered as backstroke, breaststroke, butterfly and freestyle.
The front crawl or forward crawl, also known as the Australian crawl or American crawl, is a swimming stroke usually regarded as the fastest of the four front primary strokes. As such, the front crawl stroke is almost universally used during a freestyle swimming competition, and hence freestyle is used metonymically for the front crawl. It is one of two long axis strokes, the other one being the backstroke. Unlike the backstroke, the breaststroke, and the butterfly stroke, the front crawl is not regulated by the FINA. Hence, in "freestyle" competitive swimming events, any stroke or combination of strokes is permissible. This style is sometimes referred to as the Australian crawl although this can sometimes refer to a more specific variant of front crawl.
Freestyle is a category of swimming competition, defined by the rules of World Aquatics, in which competitors are subject to only a few limited restrictions on their swimming stroke. Freestyle races are the most common of all swimming competitions, with distances beginning with 50 meters and reaching 1,500 meters, also known as the mile. The term 'freestyle stroke' is sometimes used as a synonym for 'front crawl', as front crawl is the fastest surface swimming stroke. It is now the most common stroke used in freestyle competitions.
Swimming has been recorded since prehistoric times; the earliest recording of swimming dates back to Stone Age paintings from around 7,000 years ago. In 1578, Nikolaus Wynmann, a German professor of languages, wrote the first swimming book.
In swimming, a turn is a reversal of direction of travel by a swimmer. A turn is typically performed when a swimmer reaches the end of a swimming pool but still has one or more remaining pool lengths to swim. In competitions, there are judges or pressure pads in each lane to verify that a swimmer has touched the end wall while turning. A short course race has double the number of turns of the same-distance long course race, and the world record will be quicker because of the leverage provided by push-off turns.
The German rescue swimming badge is awarded by the Wasserwacht of the German Red Cross, the DLRG and the ASB for proficiency in rescue swimming skills. The German rescue swimming badge is awarded in bronze, silver, and in gold. The awards is available as a cloth patch, as a metal badge, or as a ribbon. The rescue swimming badges in silver and gold are permitted to be worn on uniforms of the Bundeswehr, the German Police and various rescue services as a ribbon. It is also an entry-requirement for some German Police agencies.
References
- ↑ "David Berkoff and Daichi Suzuki's Underwater Duel in '88". 11 June 2015.
- ↑ "How to Develop an Awesome Underwater Dolphin Kick". 21 July 2020.
- ↑ "Is This New Swim Stroke the Fastest Yet?". 25 June 2015.
- ↑ Encyclopedia of Marine Mammals , p. 1142, at Google Books
- ↑ Royal Life Saving Society Canada (2017). Canadian Lifesaving Manual. Lifesaving Society. p. 208. ISBN 9780920326466.
- 1 2 "Archived copy" (PDF). www.usscouts.org. Archived from the original (PDF) on 13 June 2011. Retrieved 15 January 2022.
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