Shoes and health are right and wrong
Ben Wang News on July 12, shoes are essential for people's daily necessities. It not only enhances the taste of a person but also is closely related to our health. From the comfort and simplicity of plain shoes to the temptation and fashion of high-heeled shoes, the footwear industry is constantly changing the height of the heel. The latest research shows that negative heels are more conducive to human health. Merino Wool Flocking Wraps, Flocking Wool Scarf, China Merino Wool Flocking Wraps Women Sweater,Cashmere Scarf Co., Ltd. , http://www.cncashmeresweater.com
Shoes are an indispensable supply of modern human life. The ancient saying goes: A thousand miles begins with a single step. If you don’t have shoes, you can’t think
Like. If you mention the science of shoes, people must first think of sports shoes. Although in 1960, the Ethiopian marathoner Abebe barely won the world championship, with the development of sports science and technology, the era of barefoot big fairies is over. In modern sports, sports shoes are boots and equipment. The manufacturer's development of sports shoes is no less than an arms race. It can be described as cost-effective and costly. A pair of running shoes can cost as much as tens of thousands of dollars. The scientific design of sports shoes is reflected in the soles of the shoes. Different sports and even different venues have different requirements for soles. Therefore, many sole components can be freely replaced for emergency use. Liu Xiang, the famous hurdler, had temporarily decided to change the short nails of the running shoes before the match and achieved satisfactory results, saying that the spike was his “secret weaponâ€.
As the saying goes, life is sport. Ordinary people's standing walking is also a kind of exercise. Should there be corresponding health equipment? Because people are straight, the weight is entirely borne by the two legs. When standing and walking, shoes and feet must be combined into an organic whole. So whether ordinary people's shoes are scientific is also the soles of shoes. Unscientific design is not only detrimental to daily life, but also harmful to health. The classic is a series of foot problems caused by high heels. At the same time, high heels also directly affect the health of the spine. Therefore, doctors are particularly reminded patients with low back pain, cervical spondylosis, we must pay attention to the choice of shoes, avoid wearing high heels. This is a major issue related to human health. Therefore, the study of life shoes is far more important than the study of sports shoes.
The relationship between people and shoes is like the relationship between the building and the foundation. Any building will not be taken lightly in the design of the foundation. The Architectural Society has also specially set up foundations for foundations to conduct in-depth studies. For shoes design, it has never been so rigorous. The backwardness and prejudice of traditional concepts have seriously hampered the development of shoe research and caused more problems that are detrimental to health. Clinical data show that "in addition to congenital malformations, many of the foot diseases are acquired acquired podiatric diseases. It is estimated that about one quarter of the world's people suffer from varying degrees of foot disease." The medical community confirmed that most of the foot Disease has a direct relationship with shoes. And a large amount of data confirms that barefoot is more beneficial to the health of the foot. In other words, from the point of view of the health of the foot, shoes are harmful and useless. Due to the long-term failure to find a true cause and countermeasures, she had no alternative but to call it a "civilized disease." This is undoubtedly a great irony for highly developed modern science.
Love and hate interlaced heels
High-heeled shoes are the love of fashion women. It is as beautiful as an artwork. But the feeling of wearing it at first, it must be trembling, walking on thin ice, as the song sings: "High heels stepping on bumps." With the pain of torture, various kinds of lesions follow. In terms of shoes and health issues, the damage to health of high heels is the most typical and prominent. It mainly manifests in the following aspects.
Forefoot disease. Common forefoot diseases such as hallux valgus and interdigital nerve tumors are generally associated with excessive stress. High-heeled shoes move the body's center of gravity forward, and the force on the soles of the feet increases exponentially. In the long run, it must cause illness. Once these two diseases are formed, the ability to walk will be greatly affected, and even normal shoes are difficult to use. In addition to surgery, there are no better solutions.
Flatfoot disease. Deciduous relaxation is an important cause of flat foot disease. It is located on the sole of the foot and acts like a bowstring to maintain the stability of the arch. The higher the heel, the longer the arch of the forearm, the greater the tension (tension) of the diaphragm. If the long-term pulling force is too large, the aponeurosis is loosened and the arches are reduced. Severe cases can cause flat feet. The relationship between the height of the heel and the tensile force of the diaphragm can be clearly reflected from the structure of the sole. Many of the shoe's ankles (corresponding to the aponeurosis) have a steel plate called the "hook heart." It is used to reinforce the sole. The higher the height of the heel, the higher the requirement for the strength of the steel hook. Otherwise, the sole will be easily broken. The shoes without the heel must not use the hook. The greater the height of the heel, the more steel soles are needed to reinforce the soles of the soles, and the human aponeurosis cannot be reinforced. Isn't it scary?
Ankle injury. Ankle joint injury commonly known as "bad feet", wearing high heels and feet has become commonplace. Normal people in walking and exercise, the ankle tends to produce inward turning force, the outer side of the shoe is always the first to wear is this reason. The person himself is constantly adjusting this turning force in order to maintain balance, but after putting on high heels, the adjustment ability will be weakened and it will easily lead to lameness. And the higher the heel, the greater the potential energy that turns inwards, and the more serious the injury.
Back pain and cervical spondylosis. The main cause of low back pain and cervical spondylosis is the excessive bending of the spine, because the spine is made up of multiple vertebrae, and the contact surfaces of the two vertebrae are nearly flat. When the posture is upright, the vertebrae are in contact between the face and the face, and the stress is dispersed and difficult to damage. When the spine is bent, the contact surface between the vertebrae becomes smaller, the force tends to concentrate, and even concentrates to one point, and the pressure rapidly increases. Large, it is easy to damage the vertebrae. High-heeled shoes make the person's center of gravity excessively advance, inevitably cause the pelvis to lean forward, the curvature of the spine increases, the lumbar vertebrae and the cervical vertebrae are concentrated, and it is easy to form a lesion. The accumulation of this kind of injury will eventually lead to low back pain and cervical spondylosis.
Paradoxical heel shoes
For a long time, heel shoes have been considered to be the most beneficial to health, and have no adverse effects, and heels become a distinct two poles. In the footwear industry, it is regarded as a golden rule, designers as far as possible to make their products meet the medium and the standard, in order to sell well. Consumers often choose heel shoes for health reasons. Those women who are deterred by high heels are fond of the same heel shoes that can also sway. In this way, heel shoes naturally become the mainstream product of footwear.
However, this theory can not help but sometimes people wonder, heel shoes and high heels are on the back of the soles to add a heel, although the height is different, but it is difficult to draw an absolute limit. For example, 3.5 cm high heel, some people think that high heels, some people think that heel shoes, and later there is a "middle high heels" transitional title. Since there is no absolute boundary, how could it have the opposite effect? Is a high-heeled shoe a bad health enemy, and just a little lower heel is the perfect health angel? Looking at it with suspicion, the problem is even greater.
The core of the health theory of heel shoes is that it can make the force of the sole even. It seems to be very simple to explain: high heels make the force of the soles of the feet larger than the heels, which is naturally unfavorable for health; while flat shoes, the weight of the heel is larger than the soles of the feet, and it is not appropriate. Only heel shoes can make the force of the feet even, so it is best.
In fact, as long as you look at the foot anatomy, you can see that the structure of the foot is obviously not uniform, and the calcaneus is thick and solid, and the muscle ligaments are strong; while the bones, muscles, and ligaments of the forefoot are much weaker. From the perspective of ergonomics, calcaneal bones are approximately vertically superimposed, structurally stable, and smooth in gravity conduction. The bones of the forefoot are almost horizontally aligned. The load must be maintained by the strength of muscles and ligaments. It is an elastic structure that is easily deformed. , not suitable for bearing. In short, no matter from which point of view, the forefoot's bearing capacity is far inferior to that of the hind foot. It makes no sense for the front and rear foot to bear the same pressure—evenness is not equal to reason. It will inevitably damage the delicate parts. This is also the reason that the podiatric disease mostly occurs in the forefoot.
Look at the so-called second big advantage of the heel, that is, slow down the shock and protect the spine and brain. The disease caused by vibration is called vibration disease. It reduces the function of the nervous system, inhibits conditioned reflexes, damages the nerve endings, and significantly diminishes the function of vibration and pain. The performance of the arm is tingling, sour, painful, and there is a sense of ants. In severe cases, arm skin is pale, cyanosis, hand muscle weakness and muscle atrophy, and the consequences are serious. However, vibratory disease is an occupational disease and is the result of long-term stimulation of human body by high-frequency mechanical vibration. Occurred in motor vehicle drivers, such as tractors, the vibration frequency sustained by up to 50 times per second, up to high speed gear up to 100 to 200 times. The vibrations and the vibrations produced by one's own movement are two completely different concepts.
In order to avoid panic attacks, the No. 108 (Mechanics and Vibration) Technical Committee of the International Organization for Standardization (IVS) fourth (Human Body Vibration Response) subcommittee specifically studied the impact of vibration on human health and concluded that “walking and running are natural human sports. In particular, in connection with work done by muscles, it can be assumed that the occurring vibrational stress should not have harmful consequences under normal circumstances, in order to obtain indications of the vibration characteristics of the human body in an upright position, and to compare vibrations when walking or running. The resulting human reaction is beneficial.†Since this kind of vibration is beneficial, why should the heel shoes guard against it?
Interestingly, the earliest installation of heels on the soles was not for walking but for riding. When horses are nomads, the heels can keep their feet firmly in the stables, and they can stand up and use their weapons when fighting. With the nomadic people's conquest of various places, shoes with heels have gradually spread and are widely accepted. This is for practical needs and is the only reliable function of the heel.
From the perspective of the human body, heel shoes and high heels are no different. According to the scientific classification, heel shoes and high heels should be referred to as heel shoes. If high-heeled shoes are particularly harmful to the human body, then heeled shoes are moderately harmful, especially to developing adolescents and middle-aged and elderly people who are in decline.
After the issue of the heel shoes was clarified, at present, the death of a severely increased foot disease known as “civilized disease†was also solved. Although the damage of the heel shoes is not as significant as high-heeled shoes, it will eventually lead to illnesses. Even more worrying is that this effect is still intensifying. In recent years, sports shoe manufacturers have launched new styles of mid-heeled sports shoes. With the hesitation of health theories of heel shoes, more and more people have switched to using heel shoes for physical exercise. This is very dangerous. I hope that the questioning and clarification of this issue can lead people to think rationally.
Heels and high heels are collectively referred to as heel shoes. Compared to the role of the human body, there is no essential difference between the two!
Natural Son Flats
Since the higher the heel is, the more harmful, is there no flat heel or barefoot sole that is completely harmless? A lot of medical practice shows that barefoot is more conducive to the health of the foot than wearing shoes, but the skin is easily damaged. Flat shoes can obviously make up for this deficiency, and it can also maintain the barefoot's mechanical state. This is also the most natural and natural state of human beings, and it conforms to the human body's mechanical structure and movement laws.
However, in recent years, many articles have been launched against flat shoes. It is believed that wearing heeled flat heels is overburdened and can easily cause heel damage, and flat shoes have poor shock absorption and affect the health of the spine and brain. Like the health theory of the heel shoes, this is also unscientific.
In fact, when standing barefoot and wearing flat shoes, although the force of the heel is larger than the sole of the foot, it conforms to the mechanics of the foot and does not damage the heel. The previous analysis has been theoretical, and now look at the actual situation. The foot injury caused by excessive exercise is clinically known as "trouble fracture", also called "foot march." It is named after soldiers who walk on the road. The disease is more common in racing, walking and gymnastics and textile workers, porters. Its main damage is in the forefoot of the sacrum (especially the second and third metatarsals) and its surrounding soft tissue. This also proves from practice that the heel's weight bearing capacity is far greater than the sole of the foot, because first of all, the damage is always forefoot. If you wear heel shoes, the forefoot injury will undoubtedly occur earlier and worse. The heel is much stronger than we think. Most of its damage is caused by unexpected injuries or accidents such as falling from a high place. At the same time, it is accompanied by multiple fractures such as the spine pelvis and is not a sports injury. People often wear heels, and occasionally wearing flat shoes may cause heel pain, patients who stay in bed more obvious, this is the long-term lack of weight on the heel, foot fat pad atrophy results, will quickly disappear after adaptation.
Look at the disadvantages of shock absorption. The research findings of the authoritative organization have confirmed that the vibrations caused by the movement of the human body are not only harmless to health, but also beneficial. When we engage in strenuous exercise and heavy physical work, the vibration must be much greater than everyday life. Isn't everyone wearing flat shoes? If wearing flat shoes really hurts the spine and the brain, how do early humans walking barefoot survive?
Reasonable negative heels
So, is there any kind of shoe that is mechanically beneficial to human health? Based on the previous analysis, we naturally think of shoes with high front and low back. We call this kind of shoes a negative heel for the time being. In fact, negative heels are no longer conceived, and appear on the market for several years, but they have been obscured.
There are more varieties and manufacturers of negative heel shoes. The following three are more representative: the United States Earth shoes, Hong Kong's slim fitness shoes and Beijing's body training shoes. The functions of these three kinds of shoes are basically the same - to correct the human posture, so that the spine can be upright.
“Earth shoes†originated from the perception of a yoga instructor. When she was traveling by the sea, she found that the locals were particularly tall and straight. In her observations, she paid special attention to the footprints of the local people staying on the beach: the heel area is particularly deep. Thus, a shoe with a high back and a low front shoe was produced, and after wearing it, he felt straight and straight, and he had the wonderful effect of "Lotus Seat" in yoga practice. It is also comfortable to walk and it seems to be a general enjoyment of "walking barefoot on the beach". Earth shoes have become very popular in the United States. More than 500 sales terminals are scattered all over the country and exported to many countries and regions. The upsurge of walking and fitness in the western countries has also provided a vast market space for Earth shoes.
The inventor of "Slim Fitness Shoes" is a senior female executive of a footwear international trading company in Hong Kong. She found that the front high and low soles can not only upright posture, but also a significant weight loss. This has also aroused great interest among scientists. For the purpose of scientific research, Prof. Hong Youlian (currently the vice chairman of the International Sports Biomechanics Society) and the director of the Human Sports Laboratory Science Center, Dr. Jingxian Li, of the Department of Sport Science, The Chinese University of Hong Kong, jointly presided over the exercise. Body shoes research and testing. Through the photographic recording, electromyogram, energy consumption, respiration, heart rate monitoring, plantar force analysis and other equipment and means, six projects were tested. Studies have confirmed that high and low physical fitness shoes in front of the soles of the shoe can indeed make "the trunk is significantly straight, strengthen the back muscles, and help correct standing and walking postures." "Slimming effect" has also been fully confirmed, so fitness shoes, also known as "slim fitness shoes." At the same time, he unexpectedly discovered that “when wearing this kind of fitness shoes, the change in human posture causes the impact force generated when the foot touches the ground to decrease,†which undoubtedly has a protective effect on the foot.
The trainers of physical training shoes are well known for their theoretical research. They have conducted in-depth research from various angles and published many academic papers. Physical training shoes, as the name implies, are used to beautify the body. The posture of a ballet dancer is undoubtedly the most perfect. What is special is that their torso is much more straight than the average person. People in the industry call it an "unnatural posture," which is the primary condition for becoming a ballerina and the highest level of human beauty. Ballet body training requires the feet to open 180° outward and assume a “one†shape. After the center of gravity moves to the heel, people will form an abnormally straight posture. The principle of physical training shoes is also the same. Because the sole is high and low, it is also forced to move the weight of the person's body of weight to the heel, and the posture immediately becomes tall and straight. In this way, people's standing and walking in daily life all have the meaning of physical training and transform body training into a part of life. This method has been promoted as an educational material in the dance industry. Physical training shoes are more popular with body enthusiasts (especially postpartum women), and they are called "lazy body training methods." Friends who have not been in contact with such shoes can, if they are interested, also be able to verify through two small trials: keeping their bodies straight (such as standing on a wall), understanding whether the center of gravity is on the heel, standing barefoot or wearing flat shoes, Put a 2cm thick book under the forefoot to feel if the posture is taller than usual.
Body training shoes also have medical significance. We all know that the root cause of low back pain and cervical spondylosis is excessive curvature of the spine, and correction is the most fundamental treatment. Healthy body training is a treatment for patients with low back pain and cervical spondylosis. The rehabilitation of physical training shoes can also be interpreted in a popular manner by “falling awayâ€. The surgeon usually advises the patient to “pump away†(step backwards) and the practice proved to be effective. Like the principle of physical training, the role of the reverse is to shift the person's center of gravity back to the heel. However, many conditions, such as road conditions, are constrained by the fact that they are in danger of falling down. It is because of these hidden dangers that it is difficult to sustain long-term exercise and the effect is naturally limited. Physical training shoes solve this problem. It limits the weight of the person's body of weight to the heel for a long period of time, so that even when he walks forward, he has a healing effect. This latest method of rehabilitation of low back pain is known in the medical community as "low back pain foot therapy."
Some people may worry that it is not necessary to fall or wear a heel to damage the health of the heel. Take ballet dancers as an example. Although there are many ballet movements, there are only five positions of the feet, which are called five positions. Each foot position requires the feet to be fully outward (ie, horizontal). At this point, the weight of the whole body almost falls on the heel, which is more stressful than wearing negative heels, and it also requires strenuous exercise. Even so, the ballerina's heel does not suffer from it. In the history of ballet for hundreds of years, there is no record of damage. So, this kind of worry is unnecessary, and the focus of the upright person is on the heel.