How difficult is the "4A" that Yu Yusuke pursues?

[Global Times reporter Ji Fang Xin Bin] At this Year's Beijing Winter Olympics, the famous Japanese figure skater Yu Yu Yuki challenged the 4A and failed. The 4A that Yu Yu strings want to achieve is also a difficult action that many figure skaters want to challenge.

After defending his title at the 2018 PyeongChang Winter Olympics, Yusei Yushin aimed to complete 4A. He has been working hard for this goal for almost 3 years. So far, with the exception of Norway's Axel, no figure skater has successfully jumped out of the 4A in the competition. 4A is also called Axel Jump Around. Axel Jump is one of six jumping moves in figure skating, first completed by Norway's Axel in 1882. The reason why it is difficult is because although 4A is counted as a four-week jump, it takes half a week to turn around, and it actually has to complete four and a half weeks. This requires players to have faster speeds and jump higher. In addition, the 4A jump will also put the legs of figure skaters, especially the ankles, knees, etc. under a lot of pressure - the impact after landing is about 8 times the weight of the players. Astronauts rotate in the centrifuge to train, the limit is 8 times the weight load, the impact force can be imagined.

As one of the most important action elements of figure skating, the jumping action is highly competitive and is undoubtedly the "strength responsibility" of figure skating. A full jump requires the player to jump into the air, make a quick turn, and fall to ice after completing at least one spin. There are 6 common jumps in figure skating, the difficulty from low to high is: rear outer point ice jump, rear inner knot ring jump, rear outer knot ring jump, rear inner point ice jump, hook jump and Axel jump. Each jump is divided into one week, two weeks, three weeks, and four weeks. The more laps you spin in the air, the harder it becomes. Axel Jump is different from the other 5 jumps, it is the only jumping action that jumps forward and falls backwards on the ice, so it jumps half a week more than other jumps, and is considered to be the most difficult of the 6 jumps with the same number of rotation cycles.

In today's figure skating events, whether men or women, the three-week jump can be said to be "standard". Russian figure skating talent Trusova is the first female athlete in history to successfully complete the hooker's four-way jump at an international competition. Vallieva, who won her first Russian figure skating title at the end of last year, mastered the four-week jumping action that even male players could hardly complete as a teenager.