backstroke的意思|示意

Backstroke is a style of swimming used in water sports competitions. It is one of the four types of swimming strokes, and the only one performed with the swimmers back to the water’s surface. It is considered the most efficient swimming stroke since it relies on a wave-like motion of the arms and legs to move the swimmer forward in the water.

Backstroke can be used for all distances in a competition, from sprints to long distances. The stroke itself involves pushing up and out with the arms, while keeping them straight and sweeping back in a wave-like motion, and kicking with the feet. The head should be kept out of the water at all times, with the eyes looking ahead.

When swimming backstroke, it is important to keep the body in a straight line. This helps to create a more streamlined shape, helping to reduce drag and improve speed. To further improve efficiency, swimmers can use a technique called ‘dolphin kick’. This involves alternating the feet in a dolphin-like flutter kick while the arms are pushing out and sweeping back.

When competing in backstroke events, swimmers must stay in their own lane at all times. This helps to keep the race fair and ensures that swimmers are not hindered by those swimming in other lanes. In addition, backstroke swimmers must wait for the start signal at the beginning of their race, and must touch the wall at the end.

Backstroke is a powerful and efficient stroke, and can be used by all types of swimmers, from beginners to advanced. It is an exciting part of swimming competitions, and can be a great way to improve your overall swimming technique.