JP2013017579A - Tool for back muscle strengthening - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tool for back muscle strengthening, which enables even the elderly to easily and safely strengthen back muscle not by sports or exercises such as stretch motions or chinning for powering-up.SOLUTION: The tool 10 for back muscle strengthening includes: a stretchable body band 11 to be mounted on a body; a ball fixing member 15 provided on the almost center part of the body band 11; and a ball 20 fixed in a body axial direction by the ball fixing member 15. For the ball 20, a cross sectional shape is an ellipse; a short diameter is 150-250 mm; a ratio of a long axis to the length of a short axis is 1.3-1.8, and an air pressure is 1-20 kPa.

Description

  The present invention relates to a back muscle strength strengthening device using a ball that presses or hits a backed ball against a wall or a floor to extend a trunk and reinforces back muscle strength.

  In order to correct the curved back, a stoopor correction tool or a back muscle correction tool has been proposed. Many of these stoops or back muscle correction tools attempt to hold a curved or back with a rigid or non-stretchable plate to keep the back straight.

  For example, Patent Document 1 proposes a stoop remedial tool in the form of carrying a back plate in which an air bag is provided on the back side. The back plate is said to be rigid, the upper part of the back plate is fixed by a bilateral belt hung from the shoulder to the side, and the lower part of the back plate is fixed by the waist belt attached to the waist It is designed to be carried on the back.

  The spine correction tool proposed in Patent Document 2 can bend along the back but is substantially non-stretchable back plate member, and the height position of the back plate member can be adjusted. It is comprised from the flat cylindrical member (equivalent to a backrest board) externally fitted and the right-and-left end part was connected to the shoulder belt. According to this spine correction tool, it is said that the body movement of the conventional correction tool for correcting the spine to extend correctly can be remarkably limited, and the problem of being extremely cramped and easily fatigued can be solved.

  Further, in Patent Document 3, a non-stretchable waist plate that contacts the back of the waist, a non-stretchable back plate that is continuous with the waist plate and contacts the back, and attached to the waist plate. Back muscle supporter that has a waist belt that surrounds and fixes the waist and elastic shoulder belts on the left and right of the upper edge of the back plate, and the lengths of the left and right shoulder belts can be adjusted. Has been proposed. According to this back muscle correction supporter, it is possible to apply an appropriate correction force according to various body shapes, and to correct not only the anteroposterior direction of the spine but also the lateral distortion.

  On the other hand, to correct the posture, it is necessary to stretch the back and warp the chest. In Patent Document 4, while sitting on a chair, the waist is seated on the waist and a tension belt extending from both shoulders to both feet is applied. There has been proposed a back stretcher that stretches the back by the tension of the tension belt and flexes the chest.

  An exercise device for extending the back muscle is also proposed in Patent Document 5. In Patent Document 5, a vertically long stretch bed whose front surface is formed in a convex curved surface is supported on a standing frame so as to be rotatable around a horizontal horizontal axis, and extends from the upper part of the frame to the lower rear part. A back stretcher characterized by the provision of curved handrails has been proposed. This back stretcher is related to the improvement of the curl stretch bench used for stretching and strengthening exercises such as the back muscles, abdominal muscles and legs, and is considered to be convenient for the elderly and users with low physical strength.

  Further, Patent Document 6 proposes a stretch device that can easily and repeatedly extend the back muscles by mechanically moving the back support member formed on the convex curved surface to be applied to the back up and down.

Japanese Patent Laid-Open No. 2001-178758 JP 2003-38536 A JP 2002-224150 A JP-A-11-313861 Japanese Patent Laid-Open No. 11-206916 JP 2006-271855 A

  As shown in Patent Documents 1 to 3 above, the conventional dorsum or back muscle correction tool is intended to correct the bent back muscle so that it is straightened. The reason for the proposal is whether it can be corrected efficiently. In addition, as disclosed in Patent Documents 4 to 6, exercise equipment for extending the back muscles has been proposed, and the reason for the proposal is how easy it is to use for elderly people and children, and how easily the back muscles can be extended. ing.

  However, the reason why the back muscles bend is related to the person's daily posture and aging, and is often due to the weakness of the back muscles. For this reason, in order to correct the bent back muscles, it is important not only to hold the back muscles straight but also to strengthen the back muscles. In particular, in an aging society, there is a need for a back strength enhancing device that can reinforce the back muscles effectively and effectively for the elderly. Further, there is a demand for a back strength enhancing tool that can reinforce the back muscle strength itself, rather than strengthening the back muscles by performing stretching exercises of the back muscles, abdominal muscles, legs, and the like, like a back stretcher.

  In view of such conventional problems and demands, the present invention does not reinforce back muscle strength by sports or exercise such as stretching exercise or tinning, but can easily and safely provide back muscle strength even for elderly people. An object of the present invention is to provide a back strength enhancing tool that can be strengthened.

  The spinal strength strengthening device according to the present invention includes a torso band that is stretchable and attached to the torso, a ball fixing member provided at a substantially central portion of the torso band, and a body axis direction by the ball fixing member And a ball fixed to.

  In the above invention, the ball has an elliptical cross-sectional shape and a length ratio of the major axis to the minor axis of 1.3 to 1.8, and the ball is fixed so that the major axis direction is the body axis direction. Good.

  The ball preferably has an air pressure of 1 to 20 kPa and is detachably fixed by a ball fixing member, and is preferably provided with a pattern for forming irregularities on the surface. In addition, the air pressure shown above and below indicates a gauge pressure.

  In the above invention, the ball fixing member may be composed of a covering member and a receiving member that hold both end portions of the ball provided at the upper and lower portions of the substantially central portion of the trunk band. Further, the ball fixing member may be composed of two pairs of upper and lower mounting bands in which a pair of mounting bands whose end portions can be engaged and disengaged are provided at an upper portion and a lower portion of a substantially central portion of the trunk band.

  The back strength strengthening device according to the present invention makes a person carry the ball on his / her back, presses the ball fixed in the body axis direction of the person's back in a standing state, hits the wall, and poses the ball in a supine state. A back strength strengthening tool that is used by pressing against a floor and striking the floor, comprising: a backpack member that attaches the ball to a person's back; and a ball that is detachably fixed to the backpack member, the ball having a cross-section The shape may be an ellipse, the minor axis may be 150 to 250 mm, the ratio of the major axis to the minor axis may be 1.3 to 1.8, and the air pressure may be 1 to 20 kPa.

  According to the present invention, the strength of the back muscles can be easily and safely enhanced even by an elderly person, not by strengthening the back muscles by sports or exercise such as stretching exercise or tinning. The dorsum or spine can be corrected by a method different from that of the dorsum or spine correction tool that is held and fixed straight.

It is explanatory drawing which shows the use condition of the back strength reinforcing tool which concerns on this invention. It is a mimetic diagram of a back strength reinforcement device concerning the present invention. 2A is a front view, FIG. 2B is a perspective view, and FIG. 2C is a partial view showing a ball fixing member portion. It is a schematic diagram which shows the other Example of the ball fixing member of the back strength reinforcement tool which concerns on this invention. It is a graph of the muscular activity amount measurement test result which shows each muscular activity amount when performing trunk extension exercise | movement using the back muscle strength reinforcement tool and exclusive apparatus for back muscle exercise | movement which concern on this invention.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. FIG. 1 shows a use state of a back strength enhancing tool according to the present invention. The back strength reinforcing tool 10 is used with a ball attached to a person's back as shown in FIG. 1 so as to face the body axis direction, and as shown in FIG. The body band 11, a ball fixing member 15 provided at a substantially central portion of the body band 11, and a ball 20 fixed in the body axis direction by the ball fixing member 15.

  The torso band 11 is made of a material having elasticity so that it can be fixed to the torso to such an extent that it does not loosen or shift even during back muscle movement. For example, the body band 11 is made of a material such as rubber or elastomer. Both end portions of the body band 11 can be engaged, and can be engaged by, for example, a hook-and-loop fastener.

  The ball fixing member 15 is provided at a substantially central portion of the trunk band 11 so that the ball 20 hits the back when the trunk band 11 is attached to the trunk. The ball fixing member 15 may be any member as long as the ball 20 is reliably fixed in the body axis direction. Further, it is preferable that the ball fixing member 15 is configured so that the ball 20 can be easily attached and detached.

  As shown in FIG. 2, the ball fixing member 15 is composed of a covering member 151 and a receiving member 153 that hold both end portions of the ball 20 provided at the upper and lower portions of the substantially central portion of the body band 11. it can. The end portions of the covering member 151 and the receiving member 153 can be engaged with each other.

  As shown in FIG. 2 (c), the ball fixing member 15 of this example includes a back surface portion 151a in which a covering member 151 is integrally sewn to the body band 11, and a front surface portion 151b sewn to both ends thereof. And a hook-and-loop fastener (male) 151c. The receiving member 153 is formed of a back surface portion 153a sewn integrally with the body band 11, a front surface portion 153b and surface fasteners (female) 153c sewn at both ends thereof.

  The ball fixing member 15 fixes the ball 20 in the body axis direction by inserting the tip of the ball 20 into the receiving member 153 and covering the cover member 151 from the other end of the ball 20 to engage the surface fastener. be able to. Since both end portions (top portions) of the ball 20 protrude from the covering member 151 and the receiving member 153, the ball 20 can be easily and reliably fixed.

  Further, the ball fixing member 15 has a cover member 151 and a receiving member 153 that are divided into two parts, a back surface portion and a front surface portion. As a result, the shape of the ball fixing member 15 can be easily made to conform to the three-dimensional shape of the ball 20, and the fixation of the ball 20 can be ensured.

  The ball 20 should have a fixed mounting direction, that is, not a spherical shape, but an elliptical cross section like a rugby ball. For example, the ball 20 preferably has an elliptical cross-sectional shape and a length ratio of the major axis to the minor axis of 1.3 to 1.8. And what has a short axis of 150-250 mm is good. Such a ball 20 is fixed to the back such that its long axis is in the body axis direction, and the back muscles are exercised. The ball 20 having an optimal shape is selected according to the person's height, age, or degree of reduction of the back muscle strength, and the back muscle can be effectively strengthened.

  The ball 20 may have an air pressure of 1 to 20 kPa. The optimum air pressure is selected according to the degree of reduction of the back strength and the goal of strengthening the back strength. In the present invention, there is an advantage that such adjustment can be easily performed by adjusting the air pressure.

  The ball 20 is preferably soft, and for example, a ball made of butyl rubber can be used. Thereby, even an elderly person can perform a back muscle exercise easily and safely. Further, it is preferable that the surface of the ball 20 has a pattern that forms irregularities. Due to the uneven pattern on the surface, it is possible to make it difficult for the ball 20 fixed to the ball fixing member 15 to be displaced or rotated when the spine exercise is performed using the back strength enhancing tool 10.

  Although it has been described that the back strength enhancing tool 10 is used by being mounted as shown in FIG. 1, specifically, it is used as follows. In other words, the back strength enhancing tool 10 presses or strikes the ball 20 against the wall surface while standing or sitting on a chair, and presses or strikes the ball 20 against the floor while lying or The back muscles can be exercised by striking and extending the trunk. Therefore, an elderly person can easily perform back muscle exercises alone, and this back strength strengthening device 10 effectively strengthens the back muscle strength of elderly people whose back muscle strength has been weakened without forcing excessive exercise. Can do.

  The back muscle strength enhancing tool 10 and the method of using the same have been described above. However, the present invention is not limited to the above embodiment. For example, the ball fixing member can be configured as shown in FIG. In FIG. 3A, the ball fixing member is formed of two pairs of upper and lower mounting bands 152 (152A, 152B) and 154 (154A, 154B) provided at the upper and lower portions of the substantially central portion of the body band 11. Yes. Further, the ball fixing member may be formed of an upper mounting band 152 and a lower mounting band 154 as shown in FIG. The ball fixing member having the configuration shown in FIG. 3 has an advantage that it can be easily fixed even if the size of the ball 20 is considerably different. In the example shown in FIG. 3 (a), both end portions of the body band 11 can be engaged and disengaged by a hook-and-loop fastener, and the center portion of the body band 11 has a mesh structure so that air is ventilated. It is getting better. Further, both end portions of the mounting bands 152 and 154 in the example shown in FIGS. 3A and 3B can be engaged and disengaged by a hook-and-loop fastener.

  As described above, the ball fixing member may have various configurations, and may be any member as long as the ball can be reliably fixed at a predetermined position and can be easily detached. A unit in which the body band 11 and the ball fixing member 15 are integrated can also be used. That is, the back strength enhancing tool according to the present invention may be a back strength strengthening tool including a back bearing member that attaches a ball to a person's back and a ball that is detachably fixed to the back bearing member. Further, it is preferable that the ball is hollow and the air pressure can be adjusted because the hardness of the ball can be easily adjusted. However, the ball can be used even if it is not necessarily hollow.

  A muscle activity measurement test was carried out to examine the degree of muscle activity when the back muscle exercise with a trunk extension of 10 ° was performed using the back muscle strength strengthener shown in FIG. The degree of muscular activity is determined by using the isometric maximum voluntary contraction when using the back strength enhancing device according to the present invention (invention example) and the dedicated device for back muscle exercise (Sakai Medical Inc. Judgment was made by comparing with the case of use (comparative example). This dedicated device for back muscle exercise is designed to allow a subject to sit on a seat and apply a load by pushing a resistance pad backward on the back to perform strength training of the back muscles. The load was 5 kg, 10 kg, 15 kg, and 20 kg, and the trunk extension degree was 10 °, which was the same as that of the inventive example.

  Subjects were 6 elderly people with no significant orthopedic and neurological signs in the trunk (average age 76.3 people 4.1 years old, average height 145.8 people 6.0cm, average weight 48.5 people 5.6kg, 2 men, women 4). In the example of the invention, the subject was allowed to sit on a platform where the foot part sufficiently reached the floor, the back part was fixed, and a ball was inserted between the wall surfaces to perform a back muscle exercise of 10 ° trunk extension. The balls were rugby kids (KFY-MIKASA) manufactured by Mikasa Co., Ltd., having a minor axis of 195 to 205 mm and a weight of 185 g. In the back muscle exercise of the invention example, the subject can return to the original sitting posture by the force of the air pressure of the ball without using the abdominal muscle force after extending the trunk.

  The trunk extension exercise was performed 5 times at a pace of 2 seconds with the upper limbs assembled in front of the chest in both the invention example and the comparative example. The electromyogram is obtained from the third trunk extension exercise, and from the electromyogram, the muscle activity when the maximum isometric contraction is performed for 2 seconds at 10 ° trunk extension with Toso EXT is 100% MVC. % MVC (relative muscle activity) was calculated. The isometric maximum voluntary contraction was measured using a surface electromyogram measuring device (Tele MyoG2 EM-602, Noraxon) and analysis software (MyoResearch XP, Noraxon), and the derived muscles were left and right lumbar spine standing muscles. One-way analysis of variance was used for statistical processing of data.

  The results of the muscle activity measurement test are shown in FIG. In FIG. 4, the horizontal axis indicates the classification of each trunk extension exercise of the invention example and the comparative example. The vertical axis represents% MVC. The bar graph in the hatched frame shows the case of the left lumbar spine standing muscle, and the bar graph in the blank frame shows the case of the right lumbar spine standing muscle. The numbers in the bar graph indicate% MVC. According to FIG. 4, the muscle activity amount of the inventive example was 67.6% MVC for the left lumbar spine standing muscle and 64.1% MVC for the right lumbar spine standing muscle. These values correspond to the 15 kg load of the comparative example and are higher than the 10 kg load of the comparative example. It is said that 40% MVC or more is necessary for muscle strength enhancement, and sufficient muscle strength enhancement is possible by repeating the trunk extension exercise of the invention example. Moreover, since the amount of muscular activity of the invention example belongs to the category of overload for the elderly, the present invention can be suitably used as a back muscle strength strengthening tool for the elderly. In addition, according to FIG. 4, it can be seen that the muscular activities of the left and right lumbar spine standing muscles are almost the same, and there is no significant difference (n.s).

10 Back strength strengthener
11 Torso band
15 Ball fixing member
151 Cover member
152, 152A, 152B wearing band
153 Receiving member
154, 154A, 154B wearing band
20 balls

Claims (7)

  A spine comprising: a torso band that is stretchable and attached to the torso; a ball fixing member provided at a substantially central portion of the torso band; and a ball that is fixed in the body axis direction by the ball fixing member. Strengthening tool.   The ball is characterized in that the cross-sectional shape is an ellipse, the length ratio of the major axis to the minor axis is 1.3 to 1.8, and the ball is fixed so that the direction of the major axis is the direction of the body axis. Item 1. The back strength enhancing tool according to item 1.   The back muscle strength reinforcing device according to claim 1, wherein the ball has an air pressure of 1 to 20 kPa.   The spine according to any one of claims 1 to 3, wherein the ball is detachably fixed by a ball fixing member, and has a pattern that forms irregularities on the surface. Strengthening tool.   The ball fixing member is composed of a covering member and a receiving member for holding both end portions of the ball provided at an upper portion and a lower portion of a substantially central portion of the body band. The back strength reinforcing tool according to Item.   The ball fixing member is characterized in that a pair of mounting bands whose ends can be engaged and disengaged are composed of two pairs of upper and lower mounting bands provided at an upper part and a lower part of a substantially central part of the trunk band. Claim | item 1-5 back muscle strength reinforcement tool as described in any one of. Let the person carry the ball on the back,
It is a back strength strengthening tool that is used by pressing a ball fixed in the body axis direction of a person's back in a standing state and hitting it against the wall, and pressing the ball against the floor in a supine state and hitting it.
A backpack member that attaches the ball to a person's back, and a ball that is detachably fixed to the backpack member;
The ball has an oval cross-sectional shape,
The minor axis is 150-250mm, the ratio of the major axis to the minor axis length is 1.3-1.8,
Back muscle strength strengthener with air pressure of 1-20kPa.

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