insoles how to choose a good insole

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<h2>What is a good insole?</h2>
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The medical center defines a good ergonomic insole as follows:</p>
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The heel area of the insole should be 1~2 cm high, to relax the Achilles tendon. The front 1/3 of the insole can be bent, and the back 2/3 is the plantar fascia area, which must have sufficient support, otherwise, it is easy to be fatigued and injured.</p>
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The heel area should not be too soft. Use your thumb and index finger to press the heel with a little firmness to provide certain support for the heel and ankle.</p>
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The heel must be elastic. Every step of walking will cause 0.7 to 1.5 times the weight to fall on the sole, and then back to the ankle joint, knee joint, and even the cervical spine.</p>
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<h2>Why do you need a good pair of insoles?</h2>
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Foot movement when walking, and the quality of the insole directly affect the health and comfort of the walker.</p>
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Due to the fierce competition in the market, shoe manufacturers generally pay attention to the appearance of the shoes and the materials used for the shoes, and the insoles generally use ordinary materials to reduce the cost.</p>
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Many people often buy a pair of shoes and will not change until they break. They never thought about whether the original insoles are suitable for them. They think that the insoles are almost the same. In fact, the shock absorption, elasticity, and arch support function of the insole will affect the health and comfort of feet.</p>
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People tend to emphasize the style, color matching, comfort, and durability of shoes, and seldom pay attention to the influence of insoles on wearing. The importance of insoles is often overlooked.</p>
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In fact, the insole can not only keep the inside of the shoe dry but also make the shoe easy to clean and make the inside of the shoe hard to wear. At the same time, it helps to protect the feet, keep the feet comfortable and clean, and can also alleviate the sole pain caused by standing or walking for a long time, and prevent a variety of foot diseases.</p>
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<h2>What is the function of the insole?</h2>
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First of all, the insole has the function of protecting the feet. The insole fills the space between the sole and the footbed to prevent the foot from sliding in the shoe. At the same time, the insole must provide good support and stability for the feet, and can play a shock absorption effect during exercise to avoid various injuries caused by long-term exercise.</p>
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Secondly, it has good breathability and moisture conductivity. The foot sweats more and the breeding of foot bacteria reduces the comfort of the foot environment. A good insole has good breathability and moisture conductivity, improves the warm and humid environment in the shoes, inhibits the growth of bacteria, and keeps the feet dry and clean.</p>
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Promote blood circulation in the foot again. The use of insoles for the health of the feet promotes physical health and allows the blood to circulate in the feet. This facilitates long-lasting movement of the feet and relieves fatigue.</p>
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<h2>How to choose an insole?</h2>
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Common insoles are divided into categories, such as full palm, half palm, heel pad, etc.; according to the material, there are PU, EVA, silicone insoles, etc., so many choices are difficult. Don’t panic, let’s talk about the humble but important issue of how to choose the insole that suits you.</p>
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Choose the insole according to the height of the arch of the foot. Feet can be divided into high arches, flat feet, and normal feet. The arches are too high, and the area of the soles of the feet in contact with the ground is too small. The body pressure is concentrated on the forefoot and heel, and the cushioning effect of the feet is very poor. The feet with high arches are suitable for shock-absorbing insoles. In addition, there is a need for support in the arch of the foot to increase the contact area of ??the sole, so that the force will not be excessively concentrated on the forefoot and heel, causing fatigue and pain, so that the body is right. The pressure on the feet is dispersed.</p>
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The soles of the low arches are almost entirely attached to the ground. Flat feet will cause excessive pulling of the ligaments and plantar fascia of the foot for a long time, affecting the elasticity of the arch, and more likely to cause foot sprains and valgus. Generally speaking, flat feet are usually not suitable for long-term high-intensity exercise. Flat feet are suitable for supporting insoles. They must be able to support the arch of the foot and use external forces to support the arch of the foot so that the arch of the foot can exert its due cushioning and shock absorption effect. In addition to shock absorption, it also avoids the action of foot eversion.</p>
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Normal feet should not be too happy, the pressure on the soles of the feet is evenly distributed, and the elasticity of the arches is good. The insole can be selected freely according to sports characteristics.</p>
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Generally, people with high arches are more likely to have foot varus. If the angle of the inclination is too large for a long time, it will cause a series of problems with leg shape, knee pain, ligament, and gait changes (inner horoscope), the most obvious is the increased deformation of the knee that affects the shape of the leg (O-leg). The insole can adjust the positive force line to a certain extent, provide the effect of shock absorption and unloading force, and assist in the correction of leg deformation. Avoiding strenuous exercise can also help reduce joint wear and relieve knee pain.</p>
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If the flat feet have not been corrected for a long time, due to the stress points on the soles of the feet, the possibility of foot valgus is greater, and the changes in gait and leg shape will be aggravated for a long time.</p>
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The method of improvement is the same as above, and the principle is the same. Choose an insole that suits your foot shape, balance, and support the stress points on the sole of your foot to correct your foot shape.</p>
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At present, most of the insoles on the market are made of PU, EVA, and silicone materials, and most of the functional insoles are composed of composite materials, and a variety of materials are used on one insole.</p>
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PU is the abbreviation of Polyurethane, and the Chinese name is polyurethane. This material has high density and elasticity. The insole made of PU material has good softness and elasticity. The key is that it will not be deformed. It will be as soft and elastic as a long time. Mid-to-high-end shoes generally use insoles of this material.</p>
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The full name of EVA is Ethylene Vinyl Acetate, which is a synthetic material with a low price. Now, most of the insoles on the market are made of EVA foam. EVA insoles have good softness, but the elasticity is average, and the biggest bug is poor air permeability.</p>
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Silica gel is a solid-liquid coexisting material with moderate softness, good elasticity, and good shock absorption effect, and it is not easy to deform.</p>
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Generally speaking, the elasticity, comfort, and functionality of PU insoles are the best, but the disadvantage is that the price will be slightly higher.</p>
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