improvisational theatre
1850 Australian swimmer Willis uses a stroke in which his hands move forward on the water, which can be regarded as the prototype of butterfly stroke. Later, John Trajan, a British swimmer, adopted the swimming style of crawling forward alternately with his chest, legs and hands in 1873. Later, Richard Carr, an Australian, created a' shallow water' kick based on the swimming styles of Trajan and Alex Wyham. Since then, the kicking of the legs has only changed a little. There are many forms of perfect cooperation in freestyle. Generally speaking, it is common to draw water twice, draw water six times and breathe 1 time.
breaststroke
It is a swimming posture that imitates the frog's swimming action, and it is also the oldest swimming posture. In breaststroke, swimmers can easily observe whether there are obstacles ahead and avoid hitting them. /kloc-in the middle of the 0/8th century, breaststroke was called "breaststroke" in Europe. Because the speed of breaststroke is relatively slow, in the freestyle competition at the beginning of the 20th century (free swimming without specified posture), the speed of breaststroke was not as fast as other postures, which made breaststroke technology excluded. Later, FINA stipulated the swimming stroke, and the breaststroke technique was developed.
backstroke
The early backstroke just floated on the water, and then it was propelled by the kick of breaststroke. In the Olympic Games of 1900, swimmers began to use the swimming style of moving forward with both hands on the water, and the kicking style of stepping did not appear until the Olympic Games of 19 12.
butterfly stroke
The butterfly stroke was first used by German swimmer erich Rademacher in the 1926 breaststroke competition. At that time, he still used the breaststroke kicking method. 1952 After the Olympic Games, FINA decided to separate this swimming style from the chest stroke, so butterfly stroke was added, and swimmers could use dolphin kick.