JP2013138805A - Sole of training shoe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sole of a training shoe which has an appearance not so different from a general shoe sole, an excellent duration compared with a conventional sole of a training shoe, increases electromyogram during walking compared with a general shoe, and has a training effect.SOLUTION: In a sole of a training shoe, an upper layer midsole has a uniform thickness from a heel position to a tread position and has a thickness gradually reducing from the tread position to a toe position, a lower layer midsole has a thickness of 15 mm to 20 mm from the heel position to a front position being 30% of the length of the shoe sole, and has a thickness gradually reducing toward the tread position, the midsole has a hardness reduced in the lower midsole than in the upper midsole, and a toe portion and heal portion of an outsole are curled up to a shoe upper, only the toe and heel parts of the side surfaces of the upper and lower layer midsoles are covered with the outsole, so that the electromyogram of a leg is increased as compared with the general shoe, and the sole of a training shoe which is excellent in duration is provided.

Description

  The present invention relates to a shoe sole for toning that has a structure in which the amount of muscle discharge of the legs is larger than that of a general shoe in normal walking, although the appearance is not different from that of a general shoe.

In recent years, many words of metabolic syndrome have been heard, and many people are aware that it is necessary to perform aerobic exercise such as walking, jogging and swimming for the purpose of improving lifestyle-related diseases. It has become to. However, there are not many opportunities to move the body in everyday life, and there are many people who are lacking in exercise, so shoes that allow daily activities such as commuting, schooling, shopping, etc. to be linked directly to exercise are sought. Various types of toning shoes have been proposed.

Many of these toning shoes eliminate the heel part of the shoes and apply a load to the legs to increase the exercise effect, and exercise effects by trying to keep the balance by making the shoe sole special shape There are various types, such as those that increase the weight, but in any case, it is only what brings effects by applying a load to the legs by movements different from normal walking, and it does not relieve the impact due to landing during walking and hurts the foot There was a fear.

Also, in the appearance of shoes, the shape of the sole is unique, so people who are confused with toning shoes at a glance may feel resistance and hesitate to use, or the sole structure is air The need for a room and a structure for absorbing shocks necessitates a large number of complicated work processes and parts, which makes the shoes for toning expensive.

In Japanese Patent Application Laid-Open No. 2006-204712, a toe support portion for supporting a toe periphery having a lower hardness than an arch support portion for supporting the arch periphery from below, and a heel periphery from below is supported. It has been disclosed that the load applied to the joint is reduced while the muscular strength of the wearer is trained by the shoe sole configured with the heel support portion for the purpose.

However, with the above structure, the arch support part and the toe support part, and the arch support part and the heel support part, which have different hardnesses, concentrate on the joint part of the arch support part and the heel support part and continue to use it. As a result, parts with low hardness may be damaged.

JP 2006-204712 A

The present invention is intended to solve the above-described conventional problems, and is a shoe sole that provides a toning effect by increasing the amount of muscle discharge of a leg as compared with a shoe sole of a general shoe. It is an object of the present invention to provide a shoe sole for toning that can maintain its durability.

  In a shoe sole using two-layer midsoles with different hardness measured by a type E durometer hardness test according to JIS K 6253, the upper midsole has a uniform thickness from the heel position to the stepping position. The thickness gradually decreases from the attachment position to the toe position, and the lower midsole has a thickness of 15 to 20 mm from the heel position to the 30% forward position with respect to the shoe sole length, and the thickness gradually decreases from the depression position to the stepping position. The lower midsole has a lower hardness than the upper midsole, the outsole toe portion and the heel roll up to the shoe upper, and the upper and lower midsole. Shoe sole for toning, characterized in that the sides are covered only by the toes and heel by the outsole.

The shoe sole for toning characterized in that the hardness of the upper midsole is 55 to 65 and the hardness of the lower midsole is 35 to 45 in the above described shoe sole.

The upper midsole of the shoe sole for toning of the present invention has a uniform thickness from the heel position to the stepping position, and gradually becomes thinner from the stepping position to the toe position, similar to a general shoe midsole. The same structure as ordinary shoes makes it easy to walk normally.

The lower midsole of the shoe sole for toning of the present invention has a thickness of 15 to 20 mm from the heel position to 30% forward position with respect to the shoe sole length, and the thickness gradually decreases toward the stepping position. It is preferable that the lower midsole has a lower hardness measured by a type E durometer hardness test based on JIS K 6253 than the upper midsole. The reason is that if the thickness of the lower midsole is 15 mm or less, the sinking of the heel at the time of landing is reduced, so that the amount of muscle discharge during walking is reduced and the toning effect is reduced. Further, if the thickness of the lower midsole is 20 mm or more, the balance during walking is deteriorated and normal walking cannot be performed, and the appearance looks like special shoes different from general shoes. The thickness of the lower midsole gradually decreases from the heel position to the stepping position from the front position to 30% with respect to the shoe sole length so that the appearance does not change from that of a general shoe.

In general shoes, when landing on the foot, the impact is reduced with a heel and the center of gravity moves toward the base of the little finger, then moves along the side arch to the base of the thumb and the thumb using the arch of the arch It has a structure that makes it easy to efficiently repeat the kicking operation in a series.
The shoe using the sole of the present invention has a structure capable of moving the center of gravity in the same manner as a shoe using a general shoe sole. The lower midsole has a thickness of 15 to 20 mm from the heel position to 30% of the shoe sole length, and the thickness gradually decreases from the stepping position to the type E durometer in accordance with JIS K 6253. Since the lower midsole has a lower hardness than the upper midsole, the energy measured in the depth test is greatly relaxed compared to ordinary shoes when landing on the foot, and the energy to move forward By weakening, it becomes impossible to move the center of gravity smoothly forward, and energy is required to newly move the foot forward, so it takes a lot of strain on the muscle strength of each part of the leg, but after that general shoes As with, the center of gravity moves toward the base of the little finger, moves along the side arch to the base of the thumb, and can kick out the thumb using the arch of the arch Going on.

In addition, the hardness of the upper midsole and lower midsole of general shoes is often designed in the range of hardness 55 to 65 that does not cause foot glitches during walking landing and reduces impact. . On the other hand, the upper layer midsole of the shoe sole for toning of the present invention may have the same hardness range of 55 to 65 as that of general shoes, but by setting the hardness of the lower layer midsole to 35 to 45, It is possible to increase the amount of muscle discharge in the leg. If the hardness of the upper midsole is 55 or less, as described above, the sense of stability during walking is poor and the legs are twisted, which is likely to cause injury. If the upper midsole has a hardness of 65 or more, the impact on the foot during walking is increased, which similarly causes pain. In the lower midsole, if the hardness is 35 or less, by repeatedly compressing when walking, the lower midsole will not get back to its original thickness and can not be expected to increase muscle discharge, Inferior durability will cause damage to the lower midsole. Further, when the hardness of the lower midsole is 45 or more, it becomes close to the hardness of a general shoe, so that an increase in muscle discharge cannot be expected.

In the shoe sole for toning of the present invention, the outsole toe part and the heel part are rolled up to the shoe upper, and the upper and lower midsole sides are covered only by the toe part and the heel part by the outsole. Since the toe part and the heel part, which are most likely to be damaged by the force, are covered with the outsole, it is possible to prevent the direct application of force to the midsole and to improve the durability. In addition, when walking and landing, the lower midsole has a low hardness of 35-45 as measured in the type E durometer hardness test in accordance with JIS K 6253, so it is greatly compressed and deformed by the weight load, but it is outsole. Since it covers the buttocks, the amount of compression is also reduced, and it has a structure that does not interfere with walking due to moderate compression.

In a shoe sole using two-layer midsoles with different hardness measured by a type E durometer hardness test according to JIS K 6253, the upper midsole has a uniform thickness from the heel position to the stepping position. The thickness gradually decreases from the attachment position to the toe position, and the lower midsole has a thickness of 15 to 20 mm from the heel position to the 30% forward position with respect to the shoe sole length, and the thickness gradually decreases from the depression position to the stepping position. The midsole is lower in the lower midsole than the upper midsole, the outsole toe and heel are rolled up to the shoe upper, and the upper and lower midsole sides Is the same structure as a general shoe that is covered only on the toe and heel by the outsole, so it has a sole structure compared to other toning shoes. Inexpensive and can be produced from a single thing.
The hardness values described in the present invention are all numerical values measured by a type E durometer hardness test in accordance with JIS K 6253.

Shoes side view Shoe sole side view Target muscle map EMG integral value diagram

The upper midsole has a uniform thickness of 7 mm from the heel position to the stepping position, and the thickness gradually decreases from the stepping position to the toe position. The lower layer midsole is 30% forward from the heel position to the shoe sole length. The thickness up to the position is 15 mm, and the thickness gradually decreases toward the stepping position. The upper midsole has a hardness measured by a type E durometer hardness test in accordance with JIS K 6253, the lower mid The sole has a low hardness of 40, the outsole toe and heel are wound up to the shoe upper, and the upper and lower midsole sides are covered only by the toes and heel by the outsole. A toning shoe (toning) with a bottom was prepared.

The upper midsole has a uniform thickness of 7 mm from the heel position to the stepping position, and the thickness gradually decreases from the stepping position to the toe position. The lower layer midsole is 30% forward from the heel position to the shoe sole length. The thickness up to the position is 15 mm, and the thickness gradually decreases toward the stepping position. The upper midsole has a hardness measured by a type E durometer hardness test in accordance with JIS K 6253, the lower mid The sole has the same hardness as 60, the outsole toe and heel are wound up to the shoe upper, and the upper and lower midsole sides are covered only by the toes and heel by the outsole. A general shoe (blank) with a bottom was prepared.

When the nine test subjects wore the toning shoes (toning) and the general shoes (blank) created as described above, the right leg hamstrings (ham) and the right leg outer vastus muscle (broad muscle) EMG measurements were performed to verify the toning effect.

In the electromyogram, the muscle abdomen was identified by palpation, and after defatting the skin surface with alcohol, electrodes were attached to the muscle surface. The electromyogram was measured by walking with each shoe. The analysis was performed on the electromyogram during the stance phase (from ground contact to takeoff). As an evaluation of the muscle burden, after calculating the integrated value of the electromyogram, the average amplitude of the stance was obtained by dividing by the time of the stance (Equation 1). Twenty cycles were extracted and the average value was compared between each condition. For the significant difference test, a corresponding T test was used, and a significance level of 5% was considered significant.

Table 1 shows the electromyogram results of each subject, and FIG. 4 shows a comparison of electromyograms in the stance phase. The electromyogram integration value indicates the degree of muscle strain throughout one cycle, and the greater the value, the greater the muscle strain. Toning showed a higher value than the blank condition, and a significant difference was observed between hamstrings (ham) and outer vastus vastus (bius).

1. Shoe cover 2. Outsole 3. 3. Upper midsole Lower midsole 5. Heel position 6. Stepping position 7. Toe position8. Toe part 9. Buttock

Claims (2)

In a shoe sole using two-layer midsoles with different hardness measured by a type E durometer hardness test according to JIS K 6253, the upper midsole has a uniform thickness from the heel position to the stepping position. The thickness gradually decreases from the attachment position to the toe position, and the lower midsole has a thickness of 15 to 20 mm from the heel position to the 30% forward position with respect to the shoe sole length, and the thickness gradually decreases from the depression position to the stepping position. The midsole is lower in the lower midsole than the upper midsole, the outsole toe and heel are rolled up to the shoe upper, and the upper and lower midsole sides Shoe sole for toning, characterized in that only the toe and heel are covered by the outsole. The shoe sole for toning according to claim 1, wherein the hardness of the upper midsole is 55 to 65 and the hardness of the lower midsole is 35 to 45.