1: 2 minutes 30 seconds, 2 minutes 50 seconds, 3 minutes 20 seconds, 4 minutes 40 seconds, 5 minutes 30 seconds. In addition, if swimming is not limited, swim 50 meters continuously. Then 1 corresponds to10 ~1year, 2 corresponds to 12 ~ 13 year, 3 corresponds to 14 ~ 15 year, and 4 corresponds to. Note: This speed is only a rough reference.
Different people may have different speeds, and age is only a rough reference. The actual speed will also be affected by factors such as physical condition and training intensity. You can pass every form, which means you are already excellent. There is no need to have too many requirements for this swimming level, and don't swim too much, which is easy to hurt your health.
Introduction to swimming
Swimming is a skill that people float upward under the buoyancy of water and make their bodies move regularly in the water by virtue of buoyancy. From 65438 to the 1960s, swimming activities in many parts of Britain were quite active. 1828, Britain built the first indoor swimming pool at Liverpool George Pier.
This kind of swimming pool appeared in major cities in Britain from 65438 to 1930s. 1837, the first swimming organization was established in London, England, and held the earliest swimming competition in Britain. 1896, swimming was listed as an Olympic event. The highest organization of swimming is the International Swimming Federation, headquartered in Lausanne, Switzerland, and has been swimming for all since then.