How many kinds of postures are there in swimming? Which is the fastest?
According to the requirements of international events, swimming has five freestyle, breaststroke, butterfly, backstroke, individual medley. In actual swimming, there are side trips, anti frog tours, dog paddle tours, etc. the following are the regular items:Free styleOne of the swimming events. In 1896, the first Olympic Games began as a formal event. Freestyle posture without any restrictions, the fastest crawl, crawl becomes the only free swimming posture. Crawl action like crawling, the arms and legs move alternately on alternate kick. It has the advantages of reasonable structure, small resistance and uniform speed. It is the fastest and most labor-saving swimming posture in the world.
ButterflyDuring the 1924~1936 years, the biggest innovation of breaststroke is that the arms are no longer moving from the water until the end of the stroke, instead of using the arm in the air, but the breaststroke kick is still used. In the butterfly stroke, the body is prone to the surface of the water, relying on powerful arms and a wave kick of the legs to propel the body forward without a fixed body position.backstrokeOne of the swimming events. In 1900, the second Olympic Games began as a formal event. Backstroke includes the reverse breaststroke and the crawl backstroke. The reverse breaststroke is one of the earliest kinds of backstroke, which is similar to breaststroke, but the reverse of body posture. That is, the body lies on the surface of the water, with arms from side to side, from the back to the back. The backstroke stroke was used in the back of the first few Olympic games. In backstroke, the body is almost horizontal, lying in the water, the chest stretches naturally and the abdomen is in a straight line, the head is not in the water, the face out of the water. In swimming, the head is always upright and the torso revolves around the vertical axis and rotates naturally due to the arm movements of the arms.
The basic technical features of freestyle, the body prone water, head and shoulders slightly above the water, swim into the trunk when rolling around the longitudinal axis of the body properly, two arms rotate the water to push the body forward. After entering the water, the stroke is S shaped, and the breathing is coordinated with the stroke. When the arm is forced to pull, it uses the trough formed by the water on both sides of the head to inhale.BreaststrokeThe breast stroke is an ancient style of swimming. According to recorded data, swimming was similar to swimming in China, Rome and ancient Egypt 2000~4000 years ago. In August 24, 1875 the famous swimmer M. Webb using breaststroke across the English channel, which lasted 21 hours and 45 minutes. Breaststroke was the first form of swimming to be used in swimming in the early nineteenth Century. But because the breaststroke is slow, and have also appeared in the game, people are using sidestroke crawl, the less the breaststroke. It was not until the third Olympic Games in 1904 that the breaststroke was separated from other postures.
