JP2002101903A - Shoes - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide shoes having a center of gravity not far from a moving center of a foot, not giving a feeling of heavy to a person during walking, and preventing the person from being fatigued. SOLUTION: The shoes of this invention have the center of gravity G of the shoes on a vertical lower part of a talocrural articulation 1 of an wearer of the shoes, or near the same, the moment of inertia in the change of the feet wearing the shoes from a low bent forward state to a bent backward state is small, and the additional motion necessary for the wearer to move his feet, is small.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to athletic shoes such as soccer, baseball and basketball, as well as all kinds of shoes such as children's shoes and even elderly shoes. Is provided.

[0002]

2. Description of the Related Art In conventional shoes, importance has been placed on the design and form of the shoe and the weight reduction of the shoe, and no shoe has been designed with the center of gravity of the shoe being clearly defined.

[0003] Japanese Utility Model Laid-Open No. Hei 6-24501 discloses a light boot for physical training in which the center of gravity of the shoe is located on the forefoot for the purpose of applying a load to the forefoot of the wearer.

Further, Japanese Patent Application Laid-Open No. Hei 10-234412 discloses a shoe sole in which the thickness and angle of the sole are partially changed so as to easily perform the "tilting operation" of the foot, shoes including the sole, and sandals. Is disclosed.

[0005]

However, conventional shoes in which design and form are emphasized, especially large-sized town shoes, often have the center of gravity separated from the movable center of the foot. Therefore, the wearer unknowingly used extra kinetic energy in addition to the weight of the shoes every time the foot was moved,
There was the inconvenience of feeling heavy and being easily tired. In addition, it can not be said that only the weight reduction of shoes is an element that reduces the burden on pedestrians. In addition, in the shoe for physical training described in Japanese Utility Model Laid-Open No. 6-24501, the purpose is physical training,
Because the forefoot of the shoe is extremely thick, the toe portion of the shoe sole is easily caught on the ground while the wearer is walking, and in many cases, he falls. The physical training shoes do not consider the walking motion of the wearer, and thus have a problem that they are liable to cause injuries. Further, JP-A-10-234412
In the shoe sole and the shoe including the same, the energy required for walking is reduced by the thickness and angle of the sole, but the center of gravity of the entire shoe (or sole) is described. Not at all. For this reason, if the center of gravity of the shoe is far from the movable center of the foot, the wearer feels heavier and tends to be tired.

[0006]

Therefore, in the development of shoes for general healthy people, young children and elderly people, and also shoes for athletes who require high performance, the wearing of shoes should minimize the burden of wearing. In order to demonstrate effective exercise efficiency, we focused on the appropriate center of gravity position of shoes.

[0007] In other words, in order to solve the above-mentioned problems, the anatomical and medical aspects of human limb and foot morphology are used to clarify the origin of the locomotion caused by the gait of the foot, and the most effective exercise efficiency is determined. The inventor has now invented a shoe in which the center of gravity is located at an optimum position so that the shoe can be exercised.

[0008]

Embodiments of the present invention will be described below. The shoe according to the present invention reduces the burden on the foot by minimizing the load on the foot by setting the center of gravity of the shoe including the shoelace, the insole, the insole, the midsole, and the outsole at the optimum position. Exercise efficiency can be effectively exhibited. First, we focused on the movement of the feet in the basic walking movement of human life activities. 1 (a) to 1
As shown in (h), when a person walks, the state from the ankle to the toe changes continuously from the low flexion state to the dorsiflexion state (or from the dorsiflexion state to the low flexion state).
FIG. 2 shows a dorsiflexion state, and FIG. 3 shows a plantar flexion state. In FIG. 1, (e) shows a dorsiflexion state, and (b) shows a low flexion state. In both the low flexion state and the dorsiflexion state, the joint at the ankle is used as an axis, and the toe is moved. The axis of the axis is the thigh joint. FIG. 4 shows the position of the tacroarticular joint (1).

Next, attention was paid to the additional amount of the movement and the moment of inertia required when the wearer moves the foot. FIG.
As shown in (a), when the state of the shoes and feet changes from the low-bend state to the dorsi-bend state, the following becomes clear about the additional amount of exercise required when the wearer moves the feet. . As shown in FIG. 5 (b), when the position of the center of gravity (G) of the shoe is far from the position of the thigh joint (1), which is the axis, the moment of inertia increases, and when the wearer moves the foot, The amount of additional exercise required is also greater. However, as shown in FIG. 5 (c), when the position of the center of gravity (G) of the shoe is close to the position of the thigh joint (1), which is the axis, the moment of inertia becomes small, and the wearer steps on the foot. The amount of additional motion required when moving is also smaller. From the viewpoint of fatigue, shoes with the center of gravity of the shoe located close to the position of the thigh joint, which is the axis, require a small amount of additional exercise when the wearer moves the foot, making it less likely to fatigue. It can be said. Still further, in a shoe in which the center of gravity of the shoe matches the position of the thigh joint, which is the axis, the moment of inertia when changing from the low flexion state to the dorsiflexion state becomes 0, and when the wearer moves the foot, The required amount of additional exercise is also minimal. In order to match the position of the center of gravity of the shoe according to the present invention with the position of the wearer's thigh joint, the following settings were made.

FIG. 6 (a) shows a cross section of the shoe and the position of the thigh joint. As shown in FIG. 6A, it is assumed that the center of the inside (2) of the wearing mouth is the position of the thigh joint (1) of the wearer of the shoe. In addition, as shown in FIG. 6 (b), inside the shoe, it is at a height of 15% or more and 35% or less of the foot length (L) from the heel tread portion (3), and from the last part of the insole (4) to the front. The position of the thigh joint of the wearer of the shoe is included in a range from 15% to 30% of the foot length (L) toward the part.
As shown in FIG. 6 (c), the heel is at a height of not less than 2 cm and not more than 12 cm from the stomping part (3), and is not less than 10 cm from the last part of the insole (4) to the front part.
The range of the distance of not more than cm includes the position of the tacroarticular joint of the wearer of the shoe. Comparison of the length of the foot (L) from the heel treading section (3) to the thigh joint (1), setting of a numerical range, and distance from the last part of the foot length (L) and the insole (4) The comparison of the length up to the thigh joint (1) and the numerical range were set with reference to the measurement data of each part of the foot for Japanese.

[0011] In sports shoes such as golf shoes and baseball shoes, the outsole is heavier than the upper due to the spikes and shank used. As described above, the center of gravity of the shoe matches the position of the wearer's tarotal joint, or
If it is located in the vicinity, the kinetic energy required by the wearer when the foot on which the shoe is worn is changed from the low-bend state to the dorsi-bend state is small and effective. However, in actuality, when planning shoes with heavy outsole such as golf shoes, it is difficult to plan shoes at the position of the center of gravity.

Accordingly, a shoe was invented in which the center of gravity of the shoe was positioned vertically below or near the thigh joint of the wearer of the shoe. As described above, the definition of the position of the center of gravity of the shoe has been clarified as described below in order to match the definition of the position of the shoe below the leg joint of the wearer. FIGS. 7 (a) and 7 (b) show a cross section of the shoe and the position vertically below or near the position of the thigh joint (1). As shown in FIG. 7 (a), the shoe is located below the center of the inside of the wearing mouth (2) and within a cone (M) having the center of the inside of the wearing mouth (2) as the apex. And the vicinity thereof vertically below the thigh joint of the wearer. The vertical section of the cone (M) has a base angle of 50.
An isosceles triangle of degrees. As shown in FIG. 3, in a plantar flexion state of a healthy person's foot, the angle between the axial direction of the foot and the direction from the ankle to the toe is approximately 40 degrees. Is an isosceles triangle having a base angle of 50 degrees. Also, as shown in FIG. 7 (b), in the cone (M), the foot length is 3
It is at a height of less than 0%, and a range of 5% or more and 50% or less of the foot length (L) from the rear end of the insole (4) to the front part of the foot joint of the wearer of the shoe. It is vertically below or in the vicinity. Also, as shown in FIG. 7 (c), it is within the cone (M), at a height of less than 10 cm from the heel tread, and at least 1 cm to 15 cm from the rearmost part to the front part of the insole (4). The range of the following distance is vertically below the leg joint of the wearer of the shoe, or in the vicinity thereof.

As described above, even in a shoe in which the center of gravity of the shoe is positioned vertically below or near the tacroarticular joint of the wearer of the shoe, as described above, the foot on which the shoe is worn has low bending. The moment of inertia when changing from the state to the dorsiflexion state is small, and the amount of additional motion required when the wearer moves his foot is also small.

In order to set the position of the center of gravity of the shoe as described above to the position of the wearer's thigh joint, the position vertically below the position, and near those positions, the overall weight of the shoe is taken into consideration. Meanwhile, the specific gravity (density) and apparent specific gravity (density) or relative weight of the material constituting the instep are increased from the forefoot to the middle foot, and from the middle foot to the heel, and further from the heel to the ankle. Use means to do this. With the apparent specific gravity (density), the shoes, or parts such as the instep, the insole, and the insole that make up the shoes are designated as the forefoot part, the middlefoot part, etc. on any basis, It refers to the average specific gravity (density) of the constituent materials. Here, FIG.
As shown in (a), the division area does not necessarily denote a shoe or parts such as an insole, an insole, and an insole that constitute the shoe as a boundary line (1).
According to 5), it is not necessary to be strictly divided, and as shown in FIG. 14 (b), it is not specified as a division area in a shoe or parts such as an upper cover, an insole, an insole, and the like constituting the shoe. It may be coexisting with the place. Also, the relative weight, shoes, or parts such as the insole, insole, insole, etc. that make up the shoe are specified in the forefoot, midfoot, etc. area on an arbitrary basis,
It refers to the weight of the material constituting the zone. (Hereinafter, the specific gravity (density) and apparent specific gravity (density) or relative weight of a material will be referred to as the specific gravity (density) of the material.)

Here, as shown in FIG. 11 (a), from the forefoot part (11) or the middle foot part (12) of the shoe to the wearing part (1).
If the specific gravity (density) of the material is increased toward 4), the center of gravity of the shoe is located at or near the wearer's thigh joint, or vertically below or near the thigh joint. Further, as shown in FIG. 11B, when the specific gravity (density) of the material is increased from the forefoot portion (11) or the middle foot portion (12) of the shoe toward the heel portion (13), the center of gravity of the shoe is increased. It is located at or near the position of the wearer's thigh joint, or vertically below or near the thigh joint. Also,
As shown in FIG. 11C, the specific gravity of the material from the forefoot part (11) or the middle foot part (12) of the shoe to the heel part (13) and the heel part (13) toward the wearing part (14). When the (density) or the like is increased, the center of gravity of the shoe is located at or near the thigh joint of the wearer, or vertically below or near the thigh joint. Further, as shown in FIG. 11D, when the specific gravity (density) of the material is increased from the heel portion (13) of the shoe toward the wearing mouth portion (14), the center of gravity of the shoe is changed to the thigh joint of the wearer. , Or in the vicinity thereof, or vertically below the tacrofemoral joint, or in the vicinity thereof.

As described above, in order to increase the specific gravity (density) and the like of the material from each part of the shoe toward the wearing part, the weight part is provided near the wearing part of the upper, and the wearing part is provided. It is effective to make the weight of the portion larger than the weight other than the portion near the mouth portion. As the method, specific gravity is 1.
Attaching, adhering, or incorporating zero or more resin moldings, metal, leather, or a combination thereof near the mouthpiece. Further, as the method, a pocket or a concave portion is provided in the vicinity of a mouth portion of the instep, and the resin molded product or the like is inserted into the portion.

Further, in order to increase the specific gravity (density) of the material from each part of the shoe toward the wearing part, the material constituting the wearing part of the upper (upper covering material) must be overlapped. An effective method is to increase the number of materials constituting the parts other than the slip-on portion to be greater than the overlap. As shown in FIGS. 12 (a) and 12 (b), as the method, the upper material of the forefoot part (11) is one sheet, the upper material of the middle foot part (12) is two sheets, and the heel part. (13) The upper material of the upper layer is piled up three times, and the mouth part (14)
The method is to form a four-layer instep material.

In addition, as a method of increasing the specific gravity (density) of the material from each part of the shoe toward the wearable portion, a method of increasing the specific gravity (density) or the like of the material in the insole of the shoe from the forefoot or the middle foot to the heel. A method of increasing the specific gravity (density) or the like. As the method, a plurality of materials are used as a constituent material of the insole, or the thickness and the shape are changed. The insole is usually created by bonding the fabric to the top surface of the foam sponge body, but as a method of changing the specific gravity,
It is advantageous to use multiple foam sponge materials. As shown in FIGS. 13 (a), 13 (b) and 13 (c), it is conceivable to use sponges having different specific gravities for the forefoot part, the stomach part, and the heel step part of the insole. The sponge material is selected so that the specific gravity of the sponge used for the insole increases from the front to the rear. As an example, the material constituting the forefoot part of the insole is N1 (specific gravity is 0.10), the material of the sponge constituting the stepping part is N2 (specific gravity is 0.20), and the heel stepping part is constituted. Material is N3 (specific gravity 0.50)
Insole that is. These three types of materials can be bonded to form an insole body, or an insole body can be formed by integral molding.

As a method of increasing the specific gravity (density) of the material from each part of the shoe toward the wearer's mouth, a method of increasing the specific gravity (density) of the material from the forefoot or the middle foot to the heel at the midsole of the shoe. A method of increasing the specific gravity (density) or the like. As the method, a plurality of materials are used as the constituent material of the insole, or the thickness and shape are changed. The insole is usually made of paper, fiber, cork, etc.
The shape is such that the thickness gradually increases from the front to the rear. In addition, it is also possible to gradually increase the amount of metal powder, resin, or the like from the front to the rear, and to adhere, interpose, or insert the metal powder on the upper surface, the lower surface, or the middle of the midsole.

As a method of increasing the specific gravity (density) of the material from each part of the shoe toward the wearing mouth, a method of increasing the specific gravity (density) of the material in the midsole of the shoe from the front foot or the middle foot toward the heel. A method of increasing the specific gravity (density) or the like. As the method, a plurality of materials are used as a constituent material of the midsole, or the thickness and the shape are changed. The sponge material is selected such that the specific gravity of the sponge used for the midsole increases from the front to the rear. As shown in FIGS. 10A and 10B, as an example, the material constituting the forefoot portion of the midsole is S1 (specific gravity is 0.15), and the material of the sponge constituting the stepping portion is S1. S2 (specific gravity is 0.25), and the material constituting the heel tread is S3 (specific gravity is 0.50). By adhering these three types of materials, a midsole can be produced, or it can be produced by integral molding.

As a method of increasing the specific gravity (density) of the material from each part of the shoe toward the wearing mouth, as a method of increasing the specific gravity (density) of the material in the outsole of the shoe, from the forefoot or the middle foot to the heel, or A method of increasing the specific gravity (density) of the material from the forefoot portion or the middle foot portion to the heel portion, and from the heel portion to the wearing mouth portion, or from the heel portion to the wearing mouth portion, or the like. As shown in FIGS. 15 (a) to 15 (c), the outsole (5) of the shoe is not limited to a flat shape, but also has a shape in which the outsole (5) rises greatly from the heel to the wearing mouth. FIG.
As shown in (a), when the shape of the outsole (5) is flat, the specific gravity (density) of the material in the outsole (5) of the shoe from the forefoot or the midfoot toward the heel. Etc. are characterized by being large.
Further, as shown in FIG. 15 (b), the shoe of the present invention has a structure in which the outsole (5) has a continuous shape from the forefoot portion to the heel portion and from the heel portion to the wearing mouth portion. In the outsole (5), the forefoot or midfoot to heel,
And the specific gravity (density) of the material from the heel to the shoe
Etc. are characterized by being large. Also, as shown in FIG. 15 (c), when the outsole (5) has a thicker shape at the mouth portion as shown in FIG. It is characterized in that the specific gravity (density) of the material becomes larger toward the portion.

As for the shape of the outsole of the shoe, the method for forming the insole and the midsole is as follows.
The specific gravity of the outsole is increased from the front to the rear by using a plurality of materials or changing the thickness and shape of the outsole. Further, as the method, spikes and shank attached to the outsole, various components, a built-in insert member, and the like can be used.

As described above, the center of gravity of the shoe is located near the position of the thigh joint of the wearer of the shoe, or the specific gravity of the material of the shoe is shifted from the forefoot portion or the middle foot portion of the shoe toward the wearing mouth. When the configuration is such that the size of the shoe becomes large, the method as described above is used, but care must be taken so that the weight of the entire shoe does not become too heavy.

[0024]

The present invention will be described below in more detail with reference to examples. 1 shows an embodiment relating to running shoes. As shown in FIG. 8, in a normal running shoe, materials such as artificial leather and mesh fabric are used for the upper (5),
Materials such as rubber and sponge are used for the midsole (6), and the overall weight is reduced. In addition, the weight is about 200 g for one foot of the center size (26.0 cm), and the center of gravity is often located near the center of the step portion (7).

As shown in FIG. 9, in the embodiment of the present invention, the running shoe (8) has a built-in weight (9) conforming to the shape of the running shoe (8). The weight (9) is made of a molded product made of polyurethane containing a metal and has a specific gravity of 3.0 and a weight of 5 g. The forefoot part (11), the stomping part (7), and the heel stepping part (3) of the midsole (6) are EVs having different specific gravities.
A sponge was used. The material constituting the forefoot part of the midsole is S1 (specific gravity 0.15), the material of the sponge constituting the stepping part is S2 (specific gravity 0.25), and the material constituting the heel stepping part is S3 (specific gravity 0.50). Assuming that the specific gravity of the midsole used for ordinary running shoes is 0.2 to 0.3, the running shoes of the present embodiment have the weight (9) built in the wearing mouth (8) and the weight (9). Taking into account, the overall shoe will not be too heavy. A running shoe according to the embodiment of the present invention is constructed by incorporating a weight (9) into the wearing portion and using EVA sponges S1, S2, and S3 having specific gravities as described above as the material of the midsole. The weight does not increase significantly compared to the conventional running shoes, and the position of the center of gravity (G) is located below the center of the inside (2) of the wearing mouth and slightly above the heel tread.

Accordingly, as shown in FIG. 10 (b), the position of the center of gravity (G) of the shoe and the position of the wearer's thigh joint (1) are extremely close to each other. The moment of inertia at the time of the change of the foot serving as the axis from the low bending state to the dorsiflexion state is small, and the kinetic energy required for the wearer is extremely small. In other words, the wearer rarely feels the feeling of wearing the shoe while walking or running, without feeling much of the physical weight of the shoe. Further, the wearer can obtain a good fit as if the foot and the shoe were integrated, and can feel mentally secure as a running shoe.

[0027]

Since the present invention has the above-described structure, the following effects can be obtained. That is, the shoe according to the present invention is a shoe in which kinetic energy is effectively consumed without exerting an unnecessary load on foot exercises such as walking, and the fit of the wearer is excellent. Furthermore, the shoe according to the present invention is a shoe that does not easily cause an obstacle or an obstacle and easily maintains the performance of the wearer, and can contribute to health and safety. In addition, regarding the kinetic energy of the foot, since the position of the center of gravity of the shoe and the position of the thigh joint, which is the axis of the motion of the foot, coincide with or are close to each other, energy loss in the motion of the foot is extremely unlikely to occur. Therefore, the wearer can efficiently exercise his or her feet, such as walking, and is less likely to fatigue. In addition, unnecessary strain is not applied to the muscles that work particularly when plantar flexing the leg, such as the triceps surae, flexor pollicis longus, and flexor longus, so that the wearer can kick out strongly during walking.
Also, unnecessary muscles such as the anterior tibialis muscle, the extensor long hallux brevis, and the extensor long leg muscle, which are particularly effective when the dorsiflexion of the foot is performed, are not similarly burdened. This allows the wearer to carry a strong foot when walking. Therefore, the present invention is effective in preventing injuries such as the fall of the elderly and the like when he / she is tired from walking, and also with respect to obstacles caused by accumulation of fatigue. That is, the shoe according to the present invention is a shoe that can maximize the performance performance of the wearer.

[0028]

[Brief description of the drawings]

FIG. 1 is a diagram showing a foot state in walking.

FIG. 2 is a side view of a foot showing a dorsiflexion state.

FIG. 3 is a side view of the foot showing a plantar flexion state.

FIG. 4 is a view of the foot skeleton viewed from the instep side.

FIG. 5 (a) is a diagram when the state of shoes and feet changes from a low flexion state to a dorsiflexion state, and FIG. 5 (b)
FIG. 5C is a diagram illustrating a state where the position of the center of gravity (G) of the shoe changes from the low bending state to the dorsiflexion state when the position of the center of gravity (G) is far from the position of the tacroarticular joint (1); It is a figure at the time of changing from a low flexion state to a dorsiflexion state when the position of (G) is approaching the position of the talar joint (1).

FIG. 6 (a) is a diagram showing the center of the inside (2) of the wearing mouth and the position of the tacroarticular joint (1) of the wearer of the shoe, and FIG. 6 (b) and FIG. FIG. 6 (c) is a diagram showing the position of the heel tread portion (3) and the foot length (L), the position of the insole (4), and the position of the thigh joint of the wearer of the shoe.

FIG. 7 (a) is a diagram showing the position of the center of the inside of the wearing mouth (2) and the position vertically below or near the thigh joint of the wearer of the shoe, and FIG. 7 (b) and FIG. 7 (c) show the position of the heel tread (3) and the foot length (L), the position of the insole (4) and the thigh joint (1) of the wearer of the shoe. It is a figure which shows the position of the vertically lower part or its vicinity.

FIG. 8 is a view showing a running shoe.

FIG. 9 is a view showing a running shoe according to the embodiment of the present invention.

FIG. 10 (a) is a view showing a shoe using a midsole in which the specific gravity of the sponge material used increases from the front to the rear, and FIG.
(B) is a sectional view of the shoe.

FIG. 11 (a) is a diagram showing a case where the specific gravity (density) of the material increases from the forefoot portion or the middle foot portion of the shoe toward the wearing mouth, and FIG. 11 (b) FIG. 11C is a diagram showing a case where the specific gravity (density) of the material increases from the forefoot portion or the middle foot portion of the shoe toward the heel portion, and FIG. FIG. 11D is a diagram showing a case where the specific gravity (density) of the material increases from the heel portion to the wearing mouth portion, and FIG. FIG. 4 is a diagram showing a case where the specific gravity (density) and the like of the first embodiment increase.

FIG. 12 (a) shows one forefoot instep covering material,
Fig. 12 (b) is a diagram showing a shoe in which two upper cover materials of the middle foot portion are stacked, three upper cover materials of the heel portion are stacked, and four upper cover materials of the mouth portion are stacked. Is a sectional view along AA'A ".

FIG. 13 (a) is a side view showing an insole using sponges having different specific gravities for the forefoot part, the stomach part, and the heel treading part, and FIG. 13 (b) is a top view thereof. FIG. 13C is a bottom view thereof.

FIG. 14 (a) is a diagram in which a section is specified by a boundary line for shoes, and FIG. 14 (b) is a diagram in which a section is specified without providing a boundary line for shoes.

15 (a) is a view of a shoe having a flat outsole, and FIG. 15 (b) is a view of the outsole having a shape from a forefoot portion to a heel portion and from the heel portion to a wearer's mouth portion. FIG. 15 is a diagram of a shoe that is continuous up to FIG.
(C) is a view of the shoe in which the shape of the outsole is thicker at the mouth part when the shape of the outsole is worn.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Talo joint 2 Inside of foot 3 Foot heel 4 Insole 5 Outsole 6 Midsole 7 Footstep 8 Foot 9 Weight 10 Midsole 11 Forefoot 12 Midfoot 13 Heel 14 Foot 15 Line 16 Instep cover G Center of gravity L Foot length M Cone N1 EVA sponge with specific gravity of 1.0 (insole) N2 EVA sponge with specific gravity of 2.0 (insole) N3 EVA sponge with specific gravity of 5.0 (insole) S1 EVA sponge with specific gravity of 1.0 (midsole) S2 EVA sponge with specific gravity of 2.0 (midsole) S3 EVA sponge with specific gravity of 5.0 (midsole)

Claims (9)

[Claims] 1. The shoe according to claim 1, wherein the center of gravity of the shoe is located at or near the position of the thigh joint of the wearer of the shoe. 2. The shoe according to claim 1, wherein the center of gravity of the shoe is located vertically below or near the thigh joint of the wearer of the shoe. 3. In a shoe configuration, from the forefoot or middle foot to the mouthpiece, from the forefoot or middle foot to the heel, or from the forefoot or middle foot to the heel, and the heel. A shoe characterized in that the specific gravity (density), apparent specific gravity (density), relative weight, and the like of the material increase from the part toward the mouth part or from the heel part toward the mouth part. 4. The shoe according to claim 3, wherein a weight portion is provided near the mouth portion of the upper so that the weight of the mouth portion is larger than the weight other than the portion near the mouth portion. 5. The shoe according to claim 3, wherein the material constituting the mouth portion of the shoe has more overlap than the material constituting the portion other than the mouth portion. 6. The shoe insole is characterized in that the specific gravity (density), apparent specific gravity (density), relative weight and the like of the material increase from the forefoot or the midfoot toward the heel. The shoe according to claim 3. 7. A structure in which the specific gravity (density), apparent specific gravity (density), relative weight, and the like of the material are increased from the forefoot or the middle foot to the heel in the midsole of the shoe. The shoe according to claim 3. 8. The midsole of the shoe is characterized in that the specific gravity (density), apparent specific gravity (density), relative weight and the like of the material increase from the forefoot or middle foot to the heel. The shoe according to claim 3. 9. The outsole of the shoe may be worn from the forefoot or midfoot to the heel, from the forefoot or middlefoot to the heel, and from the heel to the mouth, or from the heel. The shoe according to claim 3, wherein the specific gravity (density), apparent specific gravity (density), relative weight, and the like of the material increase toward the mouth.