Football match is a very intense antagonistic sport. It is common for players to get injured in the game. If it is hit hard, it will form a big swelling, commonly known as edema. If it is not treated in time, the inflammation will be lengthened, the bruised part will be swollen all the time, and you can't play for a long time. In order to get better as soon as possible and play games, athletes used to use ice. Is to put the ice-water mixture in a bag and press it on the wound. This can reduce the joint/muscle temperature and control the inflammatory reaction of the affected area. Doing so can make the swollen place get better three or four days in advance.
Now there is a better way to make the swollen place better faster, which is what the title says: enter the freezer. This technology is called "ultra-low temperature cold therapy", which uses liquid nitrogen (-196 degrees Celsius) as the cold source, and the working temperature can be as low as-150 to-180 degrees Celsius to cold therapy the human body surface.
Because the temperature is very low, this method is better than ice compress and the wound heals faster. However, such equipment is less and the cost is much higher. Only some athletes will do this.
Moreover, this kind of liquid nitrogen is not a real liquid, but a kind of body temperature gas, which will not harm people's health and form low-temperature frostbite, and the effect is really good.
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This question, in fact, Master Jin Yong has already told you the reason. In "The Condor Heroes", the cold jade ice bed of the little dragon girl is this principle. Sitting on a cold jade ice bed to practice can be brave and diligent, one year is worth ten years of ordinary practice, and it can also prevent general computer viruses.
Although Jin Yong's novels are exaggerated and dramatic, they still have some truth.
After the game, athletes' muscles will feel sore, and some old injuries will feel dull pain. In order to eliminate these pains and reduce the inflammatory reaction of the body, sitting in the freezer can effectively improve these pains and accelerate the return of muscles to normal.
The so-called ultra-fast freezer, mainly composed of liquid nitrogen, can provide ultra-low temperature environment, and its principle is similar to "ice compress". However, ice compress only applies cold compress to a certain part of the body, and the liquid nitrogen tank keeps the whole body in the state of ice compress.
Because the temperature is extremely low, it is easy to get frostbite, so generally speaking, athletes can only stay in the freezer for three minutes at most. Moreover, for male athletes, there is a particularly important point to note, that is, they must wear thick underwear to enter, so as to avoid frostbite of male athletes' "balls" and affect related functions.
Don't underestimate this equipment, it is very expensive. Some professional sports organizations provide rental services for three minutes in 380 yuan RMB. Therefore, this device is rarely seen in China at present, and most athletes still use traditional ice compress.
Actually, this is a kind of cryotherapy.
It is inevitable for players to bump on the court.
It is easy to cause swelling and edema in the body.
On the one hand, the use of freezers
Vapor released by liquid nitrogen at minus 100 degree,
In order to achieve the effect of sedation and cold compress for athletes,
Special technology is adopted in the quick-freezing box,
So that when the athletes go in,
There is a protective layer nearby, which will not be frostbitten.
On the other hand, in order to better restore physical function,
Help players' muscles quickly return to normal from fatigue.
But also has a very obvious detumescence effect on the swollen parts of the body.
Can reduce the swelling of blood vessels in the injured part,
Congestion has been improved.
Medically speaking, it is mainly to prevent muscles from continuing to be congested and swollen. In the process of competition, the amount of oxygen required for muscle metabolism is greater than the oxygen intake of athletes, so generally speaking, muscles are in an anaerobic consumption state. In the case of sufficient oxygen, the body mainly performs the tricarboxylic acid cycle, that is, aerobic glycolysis. But in the case of relative hypoxia, it is anaerobic glycolysis. Therefore, in this process, a large number of acidic substances will be produced, and lactic acid in muscle will increase greatly. Therefore, the muscles will feel sore. In this way, muscles can stop moving and anaerobic glycolysis can be organized. After the freezer comes out, there will be blood flow when the muscles return to normal, which can further bring out the residual lactic acid in the muscles and relieve the pain.
Football is a highly antagonistic sport. When you are on the court, you come and go, sometimes you push too hard and something will happen. After the football match, some athletes will enter the quick freezer to recover their physical strength.
This is the same as using ice cubes to relieve pain and swelling when people are injured. We usually see many athletes collide and strain on the court. Inflammation and edema are easy to occur after limb injury, and the condition will get worse if it is not treated in time. At this time, the person in charge of emergency medical treatment will run to the field and spray the injured part of the player repeatedly with frozen spray to achieve the effect of cooling and relieving pain.
Quick-freezing box is a kind of therapy that uses liquid nitrogen as cold source to treat human surface. Because of its low temperature, wide coverage and long relative time, the effect is better. Some people doubt that people will not get frostbite in a box with liquid nitrogen at MINUS 100 degrees. In fact, athletes are only surrounded by liquid nitrogen vapor and will not really touch liquid nitrogen. When you are in the freezer, a gas film will form around you to separate the human body.
As the environment gets colder, the blood will begin to secrete anti-inflammatory proteins, which will slow down the blood flow in blood vessels and slowly converge to the core organs. In this case, athletes can recover their physical strength more quickly and effectively and relieve physical fatigue. Of course, this method is only a short-term conditioning. It takes too much to play a game, and the real physical recovery requires long-term training and standardized work and rest for athletes.
After high-intensity exercise, local blood vessels will expand and muscle tissue will be seriously congested. Especially in the case of injury, if the local inflammation is not effectively suppressed, it will expand, including some injuries under soft tissue. Ice compress can contract blood vessels, reduce blood circulation, reduce tissue metabolic rate and inhibit inflammatory reaction. When the temperature drops to a certain extent, the nerve conduction of pain will be slowed down or blocked, which can produce effective analgesic effect. This is why we often need ice when we are injured. On the other hand, low temperature will make collagen fibers stronger and more elastic, thus protecting injured muscle tissue.
On the other hand, from the latitude of the brain nerve, when the human body is in a cold place, the nerve tissue will send a signal to the brain in an extremely cold place, so that the brain will control the blood to secrete a special protein, protect the human muscle tissue and eliminate inflammation.
In addition, we know that lactic acid is produced because of anaerobic reaction. This kind of hypothermia treatment can make more blood flow to the core organs and make the core organs get more oxygen. This method is that when the human body comes out of the extremely low temperature environment, the core organs of the body have stored a lot of oxygen, and then enter the high temperature environment, and the core organs will pump this oxygen into the tissues of the body, thus effectively inhibiting the production of lactic acid and accelerating its decomposition and accelerating the recovery of the body.
Football is a highly antagonistic competitive sport, and fans are happy to see both sides playing on the court. You know, after the football match, many football players will go into the quick freezer. Why on earth is this?
In fact, this is mainly to alleviate the inflammation of the players' bodies, accelerate the regression of muscle soreness and the recovery of injuries. Because football is a very intense competitive sport, it is normal to fall down. Serious collision may cause edema, and improper handling may affect the game. In order to recover as soon as possible, football players will enter the quick freezer to heal their wounds.
The quick freezing machine is a means to cold therapy the human body with liquid nitrogen at minus 196 degrees Celsius as the cold source. Simply put, it is an upgraded version of omni-directional three-dimensional ice compress, which is the same as everyone's usual ankle ice compress. The quick-freezing box can not only contract blood vessels, reduce tissue metabolic rate, inhibit inflammatory reaction, but also achieve the effect of relieving pain, and the nerve conduction of pain will be slowed down or blocked by low temperature. Moreover, low temperature can also strengthen the collagen fibers of muscle and protect the injured muscle tissue.
Although it is called liquid nitrogen, it is not a liquid, but a gas. Generally, in order to avoid frostbite at low temperature, athletes will not stay in the freezer for too long, only 3 minutes is enough. Some people joked that it seems that Little Dragon Girl is right. Ice beds can not only improve skills by leaps and bounds, but also prevent computers from becoming possessed.
However, due to the high cost, it has not been fully popularized. After spraining your ankle, you can go to the freezer to experience it.
Because the intensity of a football match is very high, so is the physical consumption. Football players are often extremely tired after the game, and their endurance in all aspects of their bodies drops rapidly. At this time, most muscles are in a state of mild inflammation.
In fact, refrigerator is synonymous with liquid nitrogen. Under normal pressure, the temperature is as low as-196 degrees. Many people will ask, the temperature in the box is so low, won't such a low temperature make the players more injured? In fact, we don't have to worry, because liquid nitrogen won't come into direct contact with players, and people will automatically produce an air protective film when they go in. So the real contact is nitrogen vapor, which is the so-called Leiden frost phenomenon. In this way, the player is actually very safe. Now many players are using this aspect to decompress their muscles. Lionel Messi and cristiano ronaldo need to do the same.
When using the freezer, it can help the body to quickly cool down, that is, the contraction of blood vessels, and reduce the metabolism of the body, thus achieving the effect of inhibiting inflammation. For example, cold compress with ice cubes is actually the same principle. So as to achieve the purpose of analgesia, which is a very effective way for these athletes.
recover
Because the muscles of the whole body are in a state of fatigue.
Professional football players are prone to muscle fatigue, and long-term fatigue will do harm to their bodies and easily cause injuries. Long-term fatigue can lead to injury.
The freezer can relieve muscle fatigue and avoid the impact of injuries.
This freezer is actually refrigerated by liquid nitrogen, which is frozen by liquid nitrogen. Instantaneous cryopreservation can relieve muscle fatigue and avoid muscle fatigue. Especially in the case of multiple games in a short period of time, athletes are easily injured. This method is one of the most scientific restoration methods in the world today.
Many people may think that instant liquid nitrogen freezing will do harm to athletes, but don't worry about it. Although the temperature of liquid nitrogen will be below zero 100 degrees, it will not directly contact the athlete's body, and there will be a layer of air between the machines, so there is no need to worry about frostbite.
Low temperature can relieve muscle fatigue, reduce inflammation, contract blood vessels and reduce human metabolism, which is the most scientific recovery method in the world sports at present.