Running shoes can be divided into three categories: providing shock absorption, providing stability and providing motion control. Running shoes that provide shock absorption, usually with soft midsole soles, help the feet to be evenly stressed during exercise and help the feet to absorb shock. Shoes are usually light and have poor stability. Running shoes that provide stability usually have columns on the soles or sandwich structures inside.
Encyclopedia of running shoes:
On the shoe wall of sporting goods store, pick up a running shoe and observe. From the perspective of the outsole, the outsole is generally covered with various special lines, and there may be many grooves in the middle. The color is mostly black, but there are other colors, and the thickness is generally 3-5 mm.
The main function of the outsole is to play an anti-wear and anti-slip role in the process of direct contact with the ground, and the full lines and grooves play this role. The material of the outsole is generally carbon-containing rubber, which is more wear-resistant, with ideal anti-slip effect and weight.
Running shoes are between the outsole and the brightly colored upper, usually with a white midsole. The thickness of the midsole is about 1-2cm, and its main function is to cushion the vibration from the ground. When running, the vibration transmitted from the ground to the body can reach about 8 times of the normal walking state. If there is no midsole, running will do great harm to the whole body.
Therefore, various high technologies have been developed and applied to the midsole. For example, Nike's AIR PAD, Adidas' ADIPRENE, ASICS' GEL, Mizuno's WAVE, etc. The name is different, but the purpose is the same, that is, to find ways to reduce and transfer vibration and make you feel comfortable and safe during running.
The material of the midsole, except the patented technology specially used by various brands, is mostly foamed rubber such as EVA or PU. It has good elasticity and light weight. The midsole goes up, which is the upper part. This part is in direct contact with your feet (and of course through socks).
? It's like a protective sleeve, which protects your feet from wearing safely. Among them, the first is to touch the insole of your foot. If you look at shoes, you will find that there are many kinds of insoles. Indeed, this part is also permeated with high technology. For example, EVA is generally used as insole material, but the surface is treated, which increases the absorption and distribution function of foot sweat.