JP5927714B2 - Underwater exercise legwear - Google Patents

Description

  The present invention relates to leg wear worn during underwater exercise.

  In recent years, underwater exercise such as underwater walking and aquabics has attracted attention for the purpose of rehabilitation and dieting. In this type of underwater exercise, it is desired to reduce foot slip in order to increase mobility.

  In this regard, Patent Documents 1 to 3 disclose legwear for wearing during underwater exercise. In these leg wears, the soles are formed only in portions corresponding to the soles of the metatarsal bone head and the ribs. That is, the sole portion is not formed in a portion corresponding to the sole side of the heel portion. Thereby, it is said that drainage can be improved while improving anti-slip properties.

JP 2010-119472 A JP 2000-166608 A JP 2000-217601 A

  However, the sole part of the legwear disclosed in Patent Documents 1 to 3 uses a common shoe sole. According to the study by the inventors of the present application, it has been found that a general shoe sole intended for slip resistance on wet ground has low slip resistance in water such as a pool.

  Then, an object of this invention is to provide the leg wear for underwater exercise | movement which has high anti-slip property in water, such as a pool.

  As a result of intensive studies, the present inventors have found that, when synthetic leather having a concavo-convex pattern imitating natural leather wrinkles on the surface is used for the sole, the anti-slip property in water such as a pool can be improved. I found it.

  Therefore, the underwater exercise leg wear of the present invention includes a sole portion covering at least a portion corresponding to the sole side of the metatarsal bone head and the rib portion, and the sole portion is made of polyvinyl chloride, polyurethane, and rubber. It consists of synthetic leather which has at least one of them as a main component and has an uneven pattern imitating natural leather wrinkles on its surface.

  According to this underwater exercise leg wear, the sole portion covering at least the portion corresponding to the plantar side of the metatarsal bone head and the rib portion is made of synthetic leather having a concavo-convex pattern imitating the heel of natural leather on the surface. Therefore, it is possible to improve the slip resistance in water such as a pool. For example, it is possible to improve the slip resistance from the grip of the floor surface around the baseball to the completion of kicking out by the tip of the toes. As a result, the walking speed in water can be increased, the resistance force by water can be increased, and the mobility in water can be increased.

  It is preferable to cover the above-mentioned sole portion to the foot side portion on the fifth heel side. Here, assuming the walking of a healthy person, the movement order of the weight and force of the sole on the floor surface will be described. First, the outer side of the heel touches the ground, and then gradually moves forward from the rear part of the outer limb. After reaching the base of the fifth heel (little finger), crosses the sole and the first heel (thumb). It is said that it rolls to the base of the head, pitches it as the warp of the first heel (thumb) as it is, moves the force gradually to the first heel toe part, and finally kicks the ground strongly with each heel and moves forward. Therefore, since a force acts on the varus side when the floor of the sole is grounded during walking or exercise, a force is particularly applied to the sole and the side surface of the fifth heel. According to this structure, since the sole portion covers up to the foot side portion on the fifth heel side, it is possible to efficiently obtain anti-slip property in water such as a pool. Further, the fabric on the instep side can be prevented from rubbing against the floor surface, and the durability can be enhanced.

  Moreover, it is preferable that the above-described leg wear for underwater exercise further includes an instep portion that covers the instep portion, and the instep portion has a porous structure. According to this structure, water can be instantaneously discharged according to the movement of the foot without water remaining in the legwear. Thereby, a wearer's comfort can be improved.

  Moreover, it is preferable that the above-mentioned sole portion covers only the portions corresponding to the plantar side of the metatarsal bone head and the rib portion. According to this structure, it is possible to efficiently cover only the ground contact part from the latter half of the forward movement of the body weight during walking and exercise to the kicking out by the tip of the toes, and the maximum slip resistance with the minimum necessary covering amount Can be obtained. In addition, it is possible to improve the water sweeping property and to improve the wearer's comfort.

  Moreover, it is preferable that the above-described leg wear for underwater exercise further includes a heel band part that goes around the heel part and fixes the sole part and the instep part, and the heel band part has a length adjusting mechanism. According to this structure, the fit can be adjusted. Moreover, it can be used without depending on the size of the foot.

  Moreover, it is preferable that the toe part in the above-mentioned sole part and the above-mentioned instep part has a partition structure that is divided into at least two branches. According to this structure, it can suppress that legwear rotates to the left and right at the time of an underwater exercise | movement by the partition structure which divides a toe part into two steps.

  ADVANTAGE OF THE INVENTION According to this invention, the legware for underwater exercise | movement which has high slip resistance in the water of a pool etc. can be obtained.

It is a perspective view showing legwear for underwater exercise concerning one embodiment of the present invention from the front inner side. It is a figure which shows the legwear for underwater exercise | movement which concerns on one Embodiment of this invention from an outer surface. It is a perspective view showing legwear for underwater exercise concerning one embodiment of the present invention from the sole side. It is an enlarged view which expands and shows the surface of the sole part of the legwear for underwater exercise | movement which concerns on Example 1 of this invention. It is an enlarged view which expands and shows the surface of the sole part of the legwear for underwater exercise | movement which concerns on Example 2 of this invention. It is an enlarged view which expands and shows the surface of the sole part of the legwear for underwater exercise | movement which concerns on Example 3 of this invention. It is an enlarged view which expands and shows the surface of the bottom part of the legwear for underwater exercise | movement which concerns on the comparative example 1 of this invention. It is an enlarged view which expands and shows the surface of the sole part of the legwear for underwater exercise | movement which concerns on the comparative example 2 of this invention. It is an enlarged view which expands and shows the surface of the sole part of the legwear for underwater exercise | movement which concerns on the comparative example 3 of this invention. It is an enlarged view which expands and shows the surface of the sole part of the legwear for underwater exercise | movement which concerns on the comparative example 4 of this invention. It is an enlarged view which expands and shows the surface of the sole part of the legwear for underwater exercise | movement which concerns on the comparative example 5 of this invention. It is an enlarged view which expands and shows the surface of the bottom part of the legwear for underwater exercise | movement which concerns on the comparative example 6 of this invention.

  Hereinafter, preferred embodiments of the underwater exercise leg wear of the present invention will be described in detail with reference to the drawings. Since the underwater exercise leg wear is substantially symmetrical, only the left will be described below. In the drawings, the same or corresponding parts are denoted by the same reference numerals.

  FIG. 1 is a perspective view showing an underwater exercise leg wear according to an embodiment of the present invention from the front inner side, and FIG. 2 is a view showing the underwater exercise leg wear according to an embodiment of the present invention from an outer side. FIG. 3 is a perspective view showing leg wear for underwater exercise according to an embodiment of the present invention from the sole side. In addition, in FIGS. 1-3, the legwear for underwater exercise | movement of a wearing condition is shown. The underwater exercise leg wear 1 shown in FIGS. 1 to 3 includes an instep part 10, a sole part 20, a heel band part 30, and an adjustment part 40.

  The instep portion 10 covers the instep portion of the wearer. For the instep portion 10, a stretchable fabric, for example, a double raschel knitted fabric or the like is used. In particular, the instep part 10 preferably has elasticity in the foot width direction. Further, the instep portion 10 has a porous structure (mesh shape).

  The sole portion 20 covers a portion corresponding to the sole side of the metatarsal bone head and the rib (phalangeal bone) portion on the sole side of the wearer. Synthetic leather (artificial leather) having an uneven pattern on the surface, which is composed mainly of at least one of polyvinyl chloride, polyurethane, and rubber, and imitates natural leather wrinkles (so-called wrinkles). Leather, artificial leather).

  By using polyvinyl chloride, polyurethane, and rubber, the sole 20 is appropriately deformed by the weight of the wearer, and friction with the floor surface in water can be instantaneously increased. As a result, it is possible to effectively exhibit anti-slip properties in water. Among these, polyvinyl chloride is preferable because it is excellent in chemical resistance against pool disinfectants such as chlorine and is excellent in mechanical durability.

  The sole 20 also covers the foot side of the wearer's fifth heel. Here, since a force acts on the varus side when the floor of the sole of the foot is grounded during walking or exercise, the outer side of the foot on the fifth heel side is in contact with the floor surface slightly more than the bottom. Therefore, the sole portion 20 is arranged in a wide area toward the instep side slightly from the bottom surface in the foot side portion outside the foot on the fifth heel side.

  The instep part 10 and the sole part 20 are toe edge parts 11 and 21, outer edge parts 12 and 22 on the fifth heel (little finger) side, and inner edge parts 13 and 23 on the first heel (thumb) side, respectively. Are sewn together. Further, stretchable tapes 14 and 24 are sewn to the ankle side edge portion of the instep portion 10 and the heel side edge portion of the sole portion 20, respectively.

  A toe part formed by the instep part 10 and the sole part 20 is provided with a partition 50 that divides the first heel (thumb) and the second heel (index finger) into two branches. For example, the instep portion 10 is sewn to the sole portion 20 between the first heel and the second heel. As a result, the first basket and other baskets can be stored separately. A heel band portion 30 is provided on the instep portion 10 and the sole portion 20.

  The heel band part 30 fixes the instep part 10 and the sole part 20 to a wearer's leg by circling a wearer's heel. For the heel band part 30, for example, a band-like tape having elasticity is used. The outer edge of the heel band 30 on the fifth heel side is sewn to the tapes 14 and 24 at the joint between the instep part 10 and the sole part 20. On the other hand, the inner end portion on the first heel side of the heel band portion 30 is fixed to the tapes 14 and 24 at the joint portion between the instep portion 10 and the sole portion 20 via the adjustment portion 40.

  The adjustment unit 40 includes a Z can 41 and a plurality of holes 42 for fitting the Z can 41. The Z can 41 is fixed to the inner end of the heel band 30. On the other hand, the plurality of hole portions 42 are formed in series on the extension of the heel band portion 30 in the tape 24 in the sole portion 20. According to this adjustment part 40, the fastening position of the bandage part 30 can be adjusted by selecting the hole part 42 which fits the Z can 41, and the length of the bandage part 30 can be adjusted. it can.

  According to the underwater exercise leg wear 1 of the present embodiment, the sole portion 20 covering the portion corresponding to the sole side of the metatarsal bone head and the rib portion has a concavo-convex pattern imitating natural leather wrinkles on the surface. Since it consists of the synthetic leather which has, it can improve the slipperiness in water, such as a pool. Below, this effect is considered.

  FIG. 4 is an enlarged view showing the surface of the bottom part of the leg wear for underwater exercise of the present embodiment (and Example 1 described later) in an enlarged manner. In FIG. 4A, the enlargement ratio is 30 times, in FIG. 4B, the enlargement ratio is 50 times, and in FIG. 4C, the enlargement ratio is 100 times.

  As shown in FIG. 4, the surface of the synthetic leather has skin-like grooves A in random directions over the details. When the floor is grounded, water is drained through the groove A, and there is no water layer (film) between the convex region B surrounded by the groove A and the floor surface, and the convex region B becomes the floor surface. It is thought that it adheres without limit. Moreover, it is thought that the convex area | region B closely_contact | adheres to a floor surface as much as the convex area | region B deform | transforms moderately with a wearer's weight. Thus, it is considered that the frictional resistance in the convex region B can be instantaneously increased.

  Further, the pool bottom surface having a relatively rough surface flatness is a convex region B having a relatively high flatness, and has a convex shape that is appropriately deformed by the weight of the wearer whose load is limited by the buoyancy of water. Region B is considered suitable.

  In this way, for example, the slip resistance from the grip of the floor surface around the baseball to the completion of kicking out with the tip of the toes can be improved. As a result, the walking speed in water can be increased, the resistance force by water can be increased, and the mobility in water can be increased.

  Furthermore, it is possible to efficiently cover only the bottom ground contact part from the latter half of the forward movement of body weight in walking and exercise to the kicking out by the tip of the toes, and the maximum slip resistance can be obtained with the minimum necessary covering amount. it can. In addition, it is possible to improve the water sweeping ability, to improve the wearer's comfort, and to reduce resistance during underwater exercise.

  Moreover, according to the leg wear 1 for underwater exercise | movement of this embodiment, since the sole part 20 is arrange | positioned in the wide area toward the instep side rather than the bottom face in the foot side part by the side of the 5th heel, Even when a force acts on the varus side when the floor surface touches and the foot side portion on the fifth heel side touches the floor surface, it is possible to efficiently obtain anti-slip property in water such as a pool. Moreover, it can suppress that the instep part 10 or the sewing part of the instep part 10 and the sole part 20 is rubbed to a floor surface, and can improve durability.

  Moreover, according to the legwear 1 for underwater exercise | movement of this embodiment, since the instep part 10 comprises a porous structure and has elasticity in a foot width direction, for example, movement of a foot does not stagnate in legwear. The water can be discharged instantly depending on the situation. Thereby, while being able to improve a wearer's comfort, the resistance at the time of an underwater exercise | movement can be reduced.

  Moreover, according to the underwater exercise leg wear 1 of this embodiment, since the length of the heel band part 30 can be adjusted by the adjustment part 40, a feeling of fit can be adjusted. Moreover, it can be used without depending on the size of the foot. Moreover, since the adjustment | control part 40 is provided inside the 1st collar side, the safety | security with respect to the surrounding person is not impaired.

  Further, according to the underwater exercise legwear 1 of the present embodiment, the toe portion has the partition 50 that divides the first heel and the other heel into two forks, so that the legwear can be moved to the left and right during the underwater exercise. It can suppress that it rotates.

  The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, in the present embodiment, the structure in which the first toe (thumb) and the second toe (index finger) in the toe portion are divided into two forks, but the first toe (thumb) and the second toe (index finger) are illustrated. Alternatively, the gap between any of the third toe (middle finger), the fourth toe (ring finger), and the fifth toe (small finger) may be divided into at least two branches.

  Moreover, in this embodiment, although the hook structure which consists of Z can and a some hole part was illustrated as an adjustment part, an adjustment part is not limited to this. For example, a magic tape or the like is applicable as the adjustment unit.

  Further, in the present embodiment, the form in which the sole portion covers only the portion corresponding to the plantar side of the metatarsal bone head and the rib portion has been illustrated, but the sole portion corresponds to the portion corresponding to the sole side of the buttocks. The characteristics of the present invention can be applied even in a covering form.

  The leg wear 1 of embodiment of this invention shown to FIGS. 1-3 was manufactured as an example, and anti-slip property was evaluated. In this evaluation, a comparative evaluation between the example and the comparative example was performed.

Here, the comparative example which compared with an Example and a present Example is shown below.
Example 1

In the leg wear of Example 1, synthetic leather having a concavo-convex pattern (so-called wrinkled) on the surface, which is composed mainly of polyvinyl chloride and imitates the folds of natural leather, was used as the sole. In FIG. 4, the enlarged view of the sole part in the leg wear of Example 1 is shown. In FIG. 4A, the enlargement ratio is 30 times, in FIG. 4B, the enlargement ratio is 50 times, and in FIG. 4C, the enlargement ratio is 100 times. As shown in FIG. 4, the surface of the sole portion in the leg wear of Example 1 is a skin-shaped groove A, and a convex region B surrounded by the groove A, and a three-dimensional convex region B and a floor surface. And have. Moreover, the surface of the sole part in the leg wear of Example 1 is glossy and has a moist feeling. In addition, the thickness of the sole part in the leg wear of Example 1 was about 0.51 mm.
(Example 2)

In the legwear of Example 2, as in Example 1, synthetic leather (so-called crease-processed) having a concavo-convex pattern on the surface, which is composed of polyvinyl chloride as a main component and imitates the folds of natural leather, is used. used. In FIG. 5, the enlarged view of the sole part in the leg wear of Example 2 is shown. 5A, the enlargement ratio is 30 times, FIG. 5B is the enlargement ratio 50 times, and FIG. 5C is the enlargement ratio 100 times. As shown in FIG. 5, the sole of the leg wear of Example 2 is different from Example 1 in that the skin-like groove A on the surface is slightly shallow, and there is no gloss on the surface and it feels dry. The point is the same as in the first embodiment. In addition, the thickness of the sole part in the leg wear of Example 2 was about 0.48 mm.
(Example 3)

In the legwear of Example 3, as in Example 1, synthetic leather having a concave and convex pattern on the surface, which is made of polyvinyl chloride as a main component and mimics the folds of natural leather, is used as the sole of the foot. used. In FIG. 6, the enlarged view of the sole part in the leg wear of Example 3 is shown. In FIG. 6A, the enlargement ratio is 30 times, in FIG. 6B, the enlargement ratio is 50 times, and in FIG. 6C, the enlargement ratio is 100 times. As shown in FIG. 6, the sole portion of the leg wear of Example 3 is different from Example 1 in that the convex region B on the surface is slightly flat, and there is no gloss on the surface and it feels dry. This is the same as in the first embodiment. In addition, the thickness of the sole part in the leg wear of Example 3 was about 0.51 mm.
(Comparative Example 1)

In the leg wear of Comparative Example 1, a synthetic resin mainly composed of polyvinyl chloride was used as the sole. In FIG. 7, the enlarged view of the sole part in the legware of the comparative example 1 is shown. In FIG. 7A, the enlargement ratio is 30 times, in FIG. 7B, the enlargement ratio is 50 times, and in FIG. 7C, the enlargement ratio is 100 times. As shown in FIG. 7, the sole of the leg wear of Comparative Example 1 does not have an uneven pattern imitating natural leather wrinkles on the surface (so-called non-wrinkle processing), has no surface gloss, and feels dry. In other respects, the second embodiment is the same as the first embodiment. In addition, the thickness of the sole part in the leg wear of the comparative example 1 was about 0.48 mm.
(Comparative Example 2)

The leg wear of Comparative Example 2 is different from Example 1 in that natural rubber is used as the sole. In FIG. 8, the enlarged view of the sole part in the legware of the comparative example 2 is shown. In FIG. 8A, the enlargement ratio is 30 times, in FIG. 8B, the enlargement ratio is 50 times, and in FIG. 8C, the enlargement ratio is 100 times. As shown in FIG. 8, the bottom of the leg wear of Comparative Example 2 is different from Example 1 in that it has a regular and three-dimensional convex part on the surface, and the other points are the same as Example 1. . In addition, the thickness of the sole part in the leg wear of the comparative example 2 was about 1.83 mm.
(Comparative Example 3)

The leg wear of Comparative Example 3 is also different from Example 1 in that natural rubber is used as the sole. In FIG. 9, the enlarged view of the sole part in the legware of the comparative example 3 is shown. 9 (a), the enlargement ratio is 30 times, FIG. 9 (b) is the enlargement ratio 50 times, and FIG. 9 (c) is the enlargement ratio 100 times. As shown in FIG. 9, the sole portion of the leg wear of Comparative Example 3 is different from Example 1 in that it has a regular and three-dimensional weave pattern on the surface, and the other points are the same as Example 1. . In addition, the thickness of the sole part in the leg wear of the comparative example 3 was about 2.69 mm.
(Comparative Example 4)

The leg wear of Comparative Example 4 is different from Example 1 in that a modified ABS elastic resin is used as the sole. In FIG. 10, the enlarged view of the sole part in the legware of the comparative example 4 is shown. In FIG. 10A, the enlargement ratio is 30 times, in FIG. 10B, the enlargement ratio is 50 times, and in FIG. 10C, the enlargement ratio is 100 times. As shown in FIG. 10, the sole portion of the leg wear of Comparative Example 4 is different from Example 1 in that air bubbles of various sizes are irregularly scattered on the surface. It is the same. In addition, the thickness of the sole part in the leg wear of the comparative example 4 was about 0.75 mm.
(Comparative Example 5)

The leg wear of Comparative Example 5 is different from Example 1 in that foamed vinyl chloride is used as the sole. In FIG. 11, the enlarged view of the sole part in the legware of the comparative example 5 is shown. In FIG. 11A, the enlargement ratio is 30 times, in FIG. 11B, the enlargement ratio is 50 times, and in FIG. 11C, the enlargement ratio is 100 times. As shown in FIG. 11, the sole portion of the leg wear of Comparative Example 5 is different from Example 1 in that the surface has a rough knitted shape and irregularities having irregular sizes, and other points are implemented. Similar to Example 1. In addition, the thickness of the sole part in the leg wear of the comparative example 5 was about 1.12 mm.
(Comparative Example 6)

The leg wear of Comparative Example 6 differs from Example 1 in that a synthetic resin made of synthetic rubber is used as the sole. In FIG. 12, the enlarged view of the sole part in the legware of the comparative example 6 is shown. 12A, the enlargement ratio is 30 times, FIG. 12B is the enlargement ratio 50 times, and FIG. 12C is the enlargement ratio 100 times. As shown in FIG. 12, the sole portion of the leg wear of Comparative Example 6 is different from Example 1 in that it has a regular groove and a surface with a three-dimensional effect, and the other points are the same as Example 1. It is. In addition, the thickness of the sole part in the leg wear of the comparative example 6 was about 3.45 mm.
(Comparative Example 7)

  The legware of Comparative Example 7 is a product of another company corresponding to the legware disclosed in Patent Document 1. That is, the leg part of the leg wear of Comparative Example 7 is different from Example 1 in that rubber is used and a general shoe sole is used to form irregularities on the surface.

In this evaluation, Examples 1 to 3 and Comparative Examples 1 to 6 of the present invention were worn, respectively, and the anti-slip property in walking underwater in a pool was evaluated. These evaluation results are shown in Table 1. In Table 1, if you feel that the anti-slip property is very high, it is a double circle. If you feel it is high, it is a circle. If you feel it is relatively high, use a triangle. This is indicated by a mark.

  According to this evaluation result, as in Examples 1 to 3, by using synthetic leather as the sole, it was possible to improve the slip resistance in water such as a pool.

Further, in this evaluation, Example 1 and Comparative Example 7 of the present invention were each worn, and the walking time was measured when walking underwater of about 23 m in the pool. For comparison, we also measured the walking time underwater with bare feet. There are two subjects in this evaluation, and the number of times of underwater walking time is measured twice. These evaluation results are shown in Table 2. Moreover, the oxygen intake was converted from the following formula based on the average value of the measured walking time, and the calorie consumption was converted based on the converted oxygen intake. These results are shown in Table 3.
Calories burned (kcal / min.) = Oxygen intake (L / min.) X 5
Oxygen intake (L / min.) = 0.3540x ² -0.722x + 0.88
Here, x is the walking speed (km / h) converted from the average value of the measured walking time.
(Kumiko Ono, Noboru Onodera et al., “Changes in heart rate, rectal temperature, and oxygen intake during underwater treadmill walking and pool walking”, Journal of Kawasaki Medical Welfare Society, Vol. 14, No. 2, 2005, p. 323-330 )

  According to these evaluation results, the walking time when wearing Example 1 was shortened by about 3.70 seconds for subject 1 and about 4.67 seconds for subject 2 as compared to the walking time with bare feet. From this, it is considered that in the underwater exercise, Example 1 was able to effectively exhibit the anti-slip property and efficiently drain the water in the leg wear and maintain the mobility. Moreover, the test subject 1 and the test subject 2 were about 1.2 times or more of the calorie consumption when Example 1 was worn with respect to the calorie consumption in the case of bare feet. From this, Example 1 can also be expected to contribute to diet and health maintenance.

  DESCRIPTION OF SYMBOLS 1 ... Leg wear for underwater exercise, 10 ... Instep part, 11, 21 ... Toe edge part, 12, 22 ... Outer edge part, 13, 23 ... Inner edge part, 14, 24 ... Tape, 20 ... Foot part, 24 ... tape, 30 ... bandage part, 40 ... adjustment part, 41 ... Z can, 42 ... hole.

Claims (4)

Legwear for underwater exercise,
A plantar portion covering at least a portion corresponding to the plantar side of the metatarsal bone head and ribs,
The foot bottom, polyvinyl chloride, polyurethane, and, at least one of of the rubber as a main component, Ri Do wrinkles natural leather from synthetic leather having a surface unevenness pattern imitating,
The sole covers up to the foot side on the fifth heel side ,
Leg wear for underwater exercise. Further comprising an instep part covering the instep part,
The legwear for underwater exercise according to claim 1, wherein the instep portion has a porous structure. Further comprising a heel band portion that circulates around the heel and fixes the sole and the instep,
The leg wear for underwater exercise according to claim 2 in which said heel part has a length adjustment mechanism. The underwear for leggings for underwater exercise according to claim 2 or 3 with which a toe part in said sole and said instep part has a partition structure divided into at least two steps.