Doctors tell you how hard it is to figure skating's epic "4A"

Recently, the "4A" of the Winter Olympics, which was known as the "epic action of figure skating", was interpreted by the world figure skater Yusheng with an indomitable spirit, making it a new hot word in the Olympic Games and then popular all over the Internet.

The full name of "4A" is "Axel around the jump", which requires the player to use the speed of gliding on the ice for 6 meters, and then complete the 1440-degree rotation in about 0.7 seconds, and finally bear the impact force of about 7 times its own weight and land on one foot. The doctor of the Third People's Hospital of Mianyang City, Sichuan Province, told you that this is definitely an "inhuman test", and the athletes are mighty!

Cardiovascular physician:

This is definitely a "tempering" for cardiovascular

Chen Bin, deputy chief physician of the Department of Cardiology of the Third People's Hospital of Mianyang City, introduced that when completing the "4A" action, the human body's cardiovascular system encountered an absolute "tempering": First, in the process of falling from top to bottom, when the players bear the impact of 7 times their own weight, the pressure in the chest and abdominal cavity also rises sharply in an instant, and then the blood pressure rises sharply, and the violent fluctuation of this blood pressure is an extremely huge test for the human cardiovascular system; secondly, The 1440-degree transmutation exercise brings a transverse shear force to the internal organs, and the pressure on the aorta is particularly huge, and it may even face the occurrence of aortic dissection in the in-arterial tear.

oculist:

The impact on the retina is comparable to experiencing a car accident

Pushing the limits and challenging non-human jumps embodies the indomitable Olympic spirit, but what kind of impact is the retina experiencing for athletes who flip at 4A altitudes? Zhang Xin, deputy director of the Department of Ophthalmology of the Third People's Hospital of Mianyang City, replied: "It is equivalent to withstanding the impact of a car accident. ”

Zhang Xin explained that exercises like some that cause drastic changes in intraocular pressure can cause the body's retina to fall off. For example, Axel jumped around with the help of the extreme speed of sliding on the ice, and then completed the rotation for four and a half times in about 0.7 seconds, and finally successfully landed on one foot, the impact of this series of actions on the human eyeball is equivalent to experiencing a car accident. Its huge impact force will cause the retina to be violently oscillated, the eyeball to deform, and the vitreous base tissue due to lack of elasticity, can not be extended synchronously with the eyeball wall, it is easy to cause retinal cracks or detachment.

Orthopedic Surgeon:

Ankle weight may be tens of times that of usual

When Yusheng Jiexin challenged the "4A" on the ice but the ice was unstable, Cai Peng, the attending physician of the orthopedics and ankle group of the Third People's Hospital of Mianyang City, pinched a handful of sweat for the contestants across the screen.

Cai Peng analyzed that the ankle joint is the closest weight-bearing joint of the human body to the ground, that is to say, the ankle joint is the joint with the most weight on the whole body, when the Feather Knot String needs to jump about 6 meters high when completing the "4A" action, and then freely change the direction of movement, one-legged rotation is completed on the ground, the impact of this action on his ankle has reached dozens of times the usual, once the landing is unstable, it is easy to cause ankle sprains. "Salute to the players," Cai Peng said heartily, "for the sake of a higher, faster and stronger Olympic spirit, it is really not easy to choose to challenge the human body to the limit again and again!" ”

Neurosurgeon:

An accident is tantamount to hitting a school bus

In the process of practicing 4A, YuSheng Yushin once said: "Every time my body fell heavily on the ice, as if it was a death jump, I was training with my own mental preparation that I was not sure which time I would fall out of the concussion and then die." So what are our brains enduring when we complete the 4A?

Gao Yang, deputy chief physician of the Department of Neurosurgery at the Third People's Hospital of Mianyang City, said: "Yusheng Jiexian is right. According to professional calculations, when jumping "4A", the rotation speed of the runner is equivalent to the wheel speed of a car with a speed of 50 kilometers per hour, and the speed of the brain at this time may not only form a concussion, but also face more serious brain damage. At this time, if an accident occurs, the impact force he suffers is about the same as hitting a school bus.

Beijing Winter Olympics attracted worldwide attention, ice and snow sports are therefore setting off a boom, the doctor warmly reminded that everyone should pay attention to the right amount while actively participating in ice and snow sports, scientific exercise can be fitness and pleasant, but non-professional athletes should not blindly pursue the limit, at the same time, it is recommended that everyone experience ice and snow sports when it is best to carry out under scientific guidance.

Xu Hongjuan Yang Li Liu Lijuan Li Xiaoqing

Edited by Hou Xuanyi

Proofread by Li Ran

Reviewed by Chen Shiyu