History -

After man becomes famous to this world, the swim has been deeply related to life. The swim seems to have been played so that an ancient race might go over the river etc. in the war. It was assumed that the acute infectious disease always occurred, it got sick easily the swim, and it violated the principle of the religion and the ethics morality and was prohibited when becoming about the 16th century. The swim place appeared again in Europe after it became the 18th century, and it was used as a social function. The swim does sports in the 19th century, it is done, and it has developed into the athletic meet.

Rules-

The swimming race item of the swim is as follows

-The breast stroke 50m 100m 200m

- Free style 50m 100m 200m 400m 800m 1500m

-Butterfly 50m 100m 200m

-Backstroke 50m 100m 200m

-Relay 50m × 4 100m × 4 200m × 4

-Medley relay 100m × 4

-Individual Medley 200m 400m

. How to decide combination and the order of course

. Method distributed from finality class in 4, 5, 3, 6, 2, 7, 1, and eight courses and order in order of simple method velocity.

. Method distributed from central course sequentially in order of average division method velocity.

. The member of the same indiscrimination method team determines by lot while making it not become the same class.

. The final is done by a simple method.

Crawl-

You may swim with the free style by what swimming style (style). Swimming styles (style) other than the butterfly, the breast stroke, and the backstroke are called a free style in the medley relay and the Individual Medley item. In the turn and the goal touch, the any body part can touch the wall. You may being to have gone under water the body completely after the start and the turn is up to 15m. The any body part should always go out on the surface of the water excluding this. The head should surface completely from the wall to 15m point when starting and turning. Keeping playing a game by walking in the bottom of the water and kicking is bad while your may being to stand in the bottom in the pool play a game.

Breaststroke-

The body is from a start of the following first person persimmon it is necessary to start, to turn, and to lie upon Do not become the posture of turning up at any time. It is necessary to operate the both arms and both legs at the same time by a symmetric, right and left, equal height. The vertical motion of both feet (Dolphin kick) before the following first persimmon of the person is bad. start, turn Do not start, do not turn, do not exclude the following first person persimmon, and do not return both hands behind the hipline. Both hands should arrange from the chest from the surface of the water, in water or the water forward together, extend, and lack the surface of the water or the surface of the water under. The elbow should be in water excluding the last stroke in the goal. The gray-headed lapwing of both feet should face it outside rear. The Dolphin kick the flap foot, the butter foot, and under is bad. It is necessary to do the turn and the touch of the goal to simultaneous both hands. Both the top and bottom of the surface of the water of touch are acceptable. You may go under water the head after operating the last arm before touch. You may start, turn, and do "..person.. come" and "Person gray-headed lapwing" about the following coming to the surface on the surface of the water. A part of the head should go out on the surface of the water. A part of the head going out of the surface of the water should completely locate a part of the head above the surface of the water and touch air. The parietal region is not admitted to put on the wave.

Backstroke-

It is necessary to always swim by the posture of turning up excluding while operating the turn. In the start, it to have to be turning up to kick the wall. ..point of 15m.. head should completely go out on the surface of the water though you may have gone under water from the wall after the start and the turn the body up to 15m completely. In the turn, the any body part should touch the wall. When the turn is being operated, you may become the posture of turning up the shoulder for the surface of the water exceeding 90 degrees. Moreover, the lack of an arm while continued afterwards or a both arms that comes or continues and is simultaneous can be used to operate the turn. Do not use the lack of a kick and an arm not related to the operation of the turn when the body is not a state of turning up and becomes even one degree it. It is necessary to return to the posture of turning up before the foot parts from the wall. As for the goal touch, the hand should touch the wall by the posture of turning up. However, even if the goal touch is done in the parietal region by mistake, it doesn't become a violation.

Butterfly-

After the start and the turn, the body is lying upon face, and both shoulders should keep surface of the waters from the first arm or beginning come the parallel. Do not become supine at any time though it starts, it turns, and the sidekick in the following water is admitted. It is necessary to carry on the surface of the water forward at the same time, and to lack the both arms backward at the same time and symmetrically. Both legs and both feet are operated always at the same time, and a vertical vertical motion is permitted. Move neither both legs nor both feet alternately though it is not necessary to become equal height. It is necessary to do the turn and the touch of the goal to simultaneous both hands. Both the high and low of the surface of the water of touch are acceptable. It is necessary to pull out the lacked hand on the surface of the water though "..person.. come" in the kick, and water is permitted to the frequency under the surface of the water without the limitation the athlete. The head should completely go out from the wall to the point of 15m on the surface of the water though you may have gone under water the body completely after the start and the turn. The any body part should go out even of the following turn or the goal on the surface of the water while operating one stroke in the game.

Bibliography:

"Swimming." The Official Website of the Beijing 2008 Olympic Games. 2007. Beijing Organizing Committee for the Games of the XXIX Olympiad. <http://en.beijing2008.cn/cptvenues/sports/swimming/index.shtml>.