JP2009297510A - Trunk exercise machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a new exercising method and device capable of relieving a user from chronic stiffness or pains by allowing the user to efficiently exercise joints or muscles in his/her deep trunk on which treatment would be less likely to have effects otherwise. <P>SOLUTION: This trunk exercise machine 4 includes an external force generator 1, a shaft 2 and a foot rest 3. The external force generator 1 generates an external force and a shaft 2 is provided with an external force supply means for applying an external force with a prescribed cycle to a person to cause resonance movements at his/her trunk. The foot rest 3 which detects movements in a prescribed direction of the trunk; and a display panel having a control unit where exercise conditions including the cycle of the external force to be applied to the person and the exercise duration are inputted. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention supplies a force of a frequency that resonates with the natural frequency of the trunk to the living body from the outside, causes the trunk to resonate, moves the trunk efficiently and greatly, and causes deep joint movement, It is an object of the present invention to provide a novel trunk exercise method and apparatus capable of effectively treating muscle stiffness and pain in the deep part of the body.

Trunk movement includes movement in the left and right direction, movement in the front and rear direction, expansion and contraction movement in the height direction, torsion movement, for example, when applying external force in the left and right direction to the trunk with the force removed, The trunk curves in the left-right direction, and when the external force is applied at a certain cycle, the trunk repeats the curve at that cycle. In the present invention, the repeated bending is regarded as vibration.
When an external force having a period corresponding to the natural frequency is applied to the trunk, the trunk can be resonated.
The natural frequencies of the trunk for the four types of exercise are different.

As will be described later, it is effective to exercise the part in order to improve the joint and muscle functions in the deep trunk.
Depending on the subject, there may be a desire to perform a motion in one of these directions, or a complex motion that allows several motions to be performed simultaneously.
When one exercise is desired to be performed, an external force may be applied in accordance with the natural frequency of the trunk with respect to the exercise to generate a resonance motion.
Usually, there are many cases where it is desired to perform movements in multiple directions.In this case, external force may be applied according to the natural frequency of the movement in the direction to be prioritized. An external force may be applied so as to increase.

The human body maintains a standing position in the spinal column and the spinal column near the spinal column. For this reason, weight is always applied as a load to the spinal column and paravertebral muscles, and this becomes stress, resulting in excessive strain of the muscles.
When muscle tone continues, the range of motion of the joint decreases, muscle strength decreases, blood flow is insufficient, and pain occurs. This pain signal is transmitted to the brain, sympathetic and somatic (motor) nerves are stimulated, and blood vessels and muscles further contract. At the same time, the adrenal gland is also stimulated, catecholamines are secreted, vasoconstriction is promoted, local blood flow and oxygen deprivation occurs, pain substances are produced, and pain is exacerbated. If this condition is left untreated, the sympathetic nerves are reflexively stimulated in the spinal cord, and the pain further increases. This is called a vicious circle of pain.
Thus, somatic nerves and autonomic nerves are involved in chronic pain, and in order to treat pain, both nerves must be targeted.
Hyperthermia and low frequency therapy are effective in relieving muscle tone and treating pain. However, these treatments are not effective in the deep part of the trunk and are often suffered from chronic pain.

Exercise therapy is effective for deep body trunk pain. However, it is important to exercise enough to the deep part.
The present invention efficiently performs joint and muscle exercises in the deep trunk, effectively restores the functions of deep joints and muscles, improves blood flow, and treats stiffness and pain.

There is a goldfish movement to perform a movement similar to the present invention. This is a supine position in which the lower leg is placed on the leg receiving part of the apparatus and the leg receiving part is reciprocated left and right to maintain the health of the lower back (see, for example, Patent Document 1).
There is also an exerciser that supports the head from above and applies a force to one of the lower limbs to forcibly bend the spine (see, for example, Patent Document 2).
Further, a bicycle exerciser has been invented in which a saddle of a bicycle exerciser is rotated back and forth to give a torsional motion to the waist (see, for example, Patent Document 3).
Hereinafter, these techniques will be described with reference to the drawings.

As shown in FIG. 3, Patent Document 1 is in a supine position, a foot is placed on a base (4 in FIG. 3A), and the apparatus is operated in a posture as shown in FIG. Is reciprocated left and right, and the legs are moved left and right as shown in FIGS. 3C and 3D to help improve health.

In Patent Document 2, as shown in FIG. 4, while applying pressure to the head and supporting it, one leg is pressed against the trunk side, the other leg is pulled and applied to the pelvis, and the spinal column is forced by the rotational movement of the pelvis It is intended to reduce the displacement and distortion of the spinal column.

In Patent Document 3, as shown in FIG. 5, a saddle of a bicycle exerciser is reciprocated to the left and right to perform a torsional motion to improve health.

Patent No. 3974343 JP-A-8-187261 JP2007-61180A

The present invention applies a force having a natural frequency of the trunk to cause resonance, efficiently causes trunk movement, performs deep joint and muscle movement, pain and stiffness, joint function, muscle function, and blood flow The purpose is to eliminate.

Similar techniques are disclosed in Patent Documents 1 to 3.
However, the apparatus of Patent Document 1 mainly performs only the lower body movement, and the trunk movement is only the lateral movement, and cannot perform the longitudinal movement of the trunk, the stretching movement in the height direction, or the torsional movement around the spine. Moreover, since the natural frequency of the trunk is not taken into consideration, the trunk cannot be exercised efficiently. The applied external force escapes to the surface part that is easy to move and cannot be moved to the deep part where it is difficult to move.
For this reason, the joint function and muscle function in the deep part cannot be improved, and the blood flow improvement effect is low.

In Patent Document 2, one leg is pressed against the trunk while pressure is applied to the head, the other leg is pulled and applied to the pelvis, and the spinal column is forcibly bent by the rotational movement of the pelvis. It is intended to reduce distortion.
Because the pressure is applied to the head while applying pressure to the head, the danger is high.
In addition, the movement of the trunk is only in the lateral direction, and cannot be performed in the longitudinal direction of the trunk, in the height direction, or in the torsion around the spine. Further, since the natural frequency of the trunk is not taken into consideration, the trunk cannot be exercised efficiently. The applied external force escapes to the surface part that is easy to move and cannot move the deep part that is difficult to move. For this reason, the joint function and muscle function in the deep part cannot be improved, and the blood flow improvement effect is low.

Patent Document 3 is a bicycle exerciser as shown in FIG. 5 (A). The bicycle exercises while rotating the saddle back and forth as shown in FIG. 5 (B) torsion between the upper and lower bodies. To promote health.
Since this also exercise | moves centering on a waist | hip | lumbar part similarly to patent document 1, the whole trunk cannot be exercise | moved effectively. Moreover, since exercise is performed without considering the natural frequency of the trunk, the trunk cannot be exercised efficiently. The applied external force escapes to the surface part that is easy to move and cannot move the deep part that is difficult to move. For this reason, the joint function and muscle function in the deep part cannot be improved, and the blood flow improvement effect is low.

Thus, the trunk is always stressed, becomes difficult to move, and often causes pain. Therefore, a method for treating this is being sought. Since exercise is effective for this treatment, there was an idea to exercise deep joints and muscles in the trunk, but there was no efficient way to exercise deeply.

In order to solve this, in the invention according to claim 1, in the method of exercising the trunk, an external force supply step is provided in which an external force having a predetermined period is applied to the living body to cause a resonance motion of the trunk of the living body. It was.

According to a second aspect of the present invention, in the trunk exercise method according to the first aspect, a trunk movement detection step 1 for detecting trunk movement, and an external force applied to the living body so that the magnitude of the trunk movement is maximized. Step 2 for controlling the cycle is provided, and when the natural frequency of the trunk changes, the cycle of the external force applied to the living body is changed so as to always follow the trunk, so that the trunk body is always resonated.

In invention of Claim 3, in the trunk exercise | movement method of Claim 1 or 2,
The external force applied to the living body is a force component acting in the left-right direction of the trunk, a force component acting in the longitudinal direction of the trunk, a force component acting in the height direction of the trunk, and a force component twisting the trunk And having one or more force components.

According to a fourth aspect of the present invention, in the trunk exercise method according to any one of the first to third aspects, the amplitude of the external force is adjusted so that the resonance movement of the trunk section has an appropriate value.

According to a fifth aspect of the present invention, in the trunk exercise method according to any one of the first to fourth aspects, the legs of the person to be exercised in a state where the legs are extended in the supine position and both legs are lifted up are alternately left and right. The step of applying the external force to cause the pelvic elevation and depressurization to occur rhythmically and causing a resonating motion of the trunk of the living body is provided.

According to a sixth aspect of the present invention, the trunk exercising device is provided with external force supply means for applying an external force having a predetermined period to the living body to cause a resonance motion of the trunk portion of the living body.

According to a seventh aspect of the present invention, in the trunk exercise apparatus according to the sixth aspect, a trunk movement detection means for detecting trunk movement, and a cycle of an external force applied to the living body so that the magnitude of the trunk movement is maximized When the natural frequency of the trunk changes, this is detected by the trunk motion detection means, and the period of the external force applied to the living body is changed according to the output of the trunk motion detection means, I always tried to make the trunk resonate.

The invention according to claim 8 is the trunk exercising device according to claim 6 or 7, wherein the external force applied to the living body is a force component acting in the left-right direction of the trunk, a force component acting in the front-rear direction of the trunk. Among the force component acting in the height direction of the trunk and the force component twisting the trunk, one or more force components are included.
According to a ninth aspect of the present invention, in the trunk exercise apparatus according to any one of the fifth to eighth aspects, an external force amplitude adjusting means for adjusting an amplitude of an external force applied to the living body is provided so that the resonance motion of the trunk is maximized. The external force amplitude adjusting means was controlled so that

In invention of Claim 10, in the trunk exercise | movement apparatus in any one of Claim 5 to 9, an external force generation | occurrence | production part (1),
A shaft (2) for supplying an external force generated by the external force generator (1) to a living body with a predetermined period and amplitude;
A pedestal (3) provided on the shaft (2) to hold the legs;
A motion detector (4) for detecting motion of the trunk in a predetermined direction,
A body that stretches its legs in the supine position, puts the legs on the footrest (3), controls the external force generator (1), and causes the legs to act on the legs by applying external forces with a predetermined period and amplitude. In the trunk exercise device,
The motion detection unit (4) detects the trunk motion, and adjusts one or both of the period and the amplitude of the external force so that the trunk motion is maximized to always perform the trunk resonance motion. I did it.

According to the first aspect of the present invention, since a force having the same period as the natural frequency of the trunk is applied to the living body to resonate, a large trunk motion can be efficiently generated to the deep part.

According to a second aspect of the present invention, in the trunk exercise method according to the first aspect, even if the natural frequency of the trunk changes due to exercise, the period is automatically followed and the period is changed to always resonate. Can cause big trunk exercise.

In the invention according to claim 3, in the trunk exercise method according to claim 1 or 2, since the force in the direction in which the trunk exercise is desired is applied and the resonance motion is performed at the natural frequency in that direction, It is possible to perform an efficient and effective exercise in response.

In the invention according to claim 4, in the trunk exercise method according to any one of claims 1 to 3, the amplitude of the external force is adjusted so that the resonance movement of the trunk becomes an appropriate value. Since exercise with an appropriate strength can be performed according to the state of the patient, more effective treatment can be performed.

According to a fifth aspect of the present invention, in the trunk exercise method according to any one of the first to fourth aspects, the legs of an exercised person in a supine position are lifted with their legs open, force is applied alternately in the leg length direction, and the pelvis As a result, rhythmical exercise and lower control are performed, so that trunk exercises including pelvic exercises can be performed efficiently and effectively.

In the invention according to claim 6, since the external force supply means for applying the external force having a period for causing the resonance motion of the trunk to the living body to cause the resonance motion of the trunk of the living body is provided, Joints and muscle movement can be generated, the function of deep joints and muscles can be improved, blood flow can be promoted, and pain can be alleviated.

According to a seventh aspect of the present invention, in the trunk exercise device according to the fifth or sixth aspect, a trunk motion detection means for detecting trunk motion is provided, and an external force supply means is generated so as to maximize the trunk movement. The frequency of external force to be controlled was controlled. When deep trunk exercise is performed, the joint becomes easy to move and muscle tone is also relieved, so the natural frequency of the trunk changes, but according to the invention of the present claim, the period of external force is adjusted in response to this change. Because it can change automatically and always perform the trunk's resonant motion, it improves the function of deep joints and muscles more effectively, more reliably, promotes blood flow, and relieves pain be able to.

The invention according to claim 8 is the trunk exercising device according to claim 6 or 7, wherein the external force applied to the living body is a force component acting in the left-right direction of the trunk, a force component acting in the front-rear direction of the trunk. Since one or more force components are included among the force component acting in the height direction of the trunk and the force component twisting the trunk, the trunk can resonate in a desired direction.

In invention of Claim 9, in the trunk exercise | movement apparatus in any one of Claims 6-8,
The amplitude of the external force supplied to the living body was adjusted so that the resonance motion of the trunk would be an appropriate value.
For this reason, it is possible to easily perform exercises of appropriate strength according to the condition of the subject with a simple device, improve the function of deep joints and muscles more effectively and more reliably, and improve blood flow. Can promote pain and relieve pain.

In invention of Claim 10, in the trunk exercise | movement apparatus in any one of Claims 6-9,
An external force generator (1);
A shaft (2) for supplying an external force generated by the external force generator (1) to a living body with a predetermined period and amplitude;
A pedestal (3) provided on the shaft (2) to hold the legs;
A motion detector (4) for detecting motion of the trunk in a predetermined direction,
A body that stretches its legs in the supine position, puts the legs on the footrest (3), controls the external force generator (1), and causes the legs to act on the legs by applying external forces with a predetermined period and amplitude. In the trunk exercise device,
The motion detection unit (4) detects the trunk motion, and adjusts one or both of the period and the amplitude of the external force so that the trunk motion is maximized to always perform the trunk resonance motion. I did it.
According to the present invention, the resonance motion of the trunk can be efficiently performed with a simple configuration, effectively improving the function of deep joints and muscles, promoting blood flow, and pain Can be relaxed.

(A) and (B) are explanatory views of a method for applying an external force in the invention of claim 5, and (C) and (D) show the state of vibration of the trunk when an external force is applied. An embodiment of the invention as set forth in claim 10. It is a figure of the Example of patent document 1. FIG. It is a figure of the Example of patent document 2. FIG. It is a figure of the Example of patent document 3. FIG.

Apply external force to the living body at the same frequency as the natural frequency of the trunk for the purpose of efficiently exercising the trunk, effectively restoring deep joint and muscle functions, and improving blood flow and alleviating pain. That was realized.

The invention according to claim 1 is a trunk exercise method characterized by including an external force supply step of applying an external force having a predetermined period to the living body to cause a resonance movement of the trunk of the living body.
Resonance movement of the trunk is generated, so it is possible to perform trunk movement to the deep part safely and efficiently with less force, so the deep joint movement and muscle movement, which were difficult and difficult in the past, are effective. In fact, the function can be restored.

The invention according to claim 2 is the trunk exercise method according to claim 1, wherein the trunk exercise detection step 1 for detecting the trunk exercise and the external force applied to the living body so that the magnitude of the trunk exercise is maximized. Step 2 for controlling the period is provided, and when the natural frequency of the trunk changes, the period of the external force applied to the living body is changed following the change, so that the trunk part always performs the resonance motion.
When the trunk resonates, the deep joints and muscles can be effectively moved, so that the natural frequency of the trunk changes with time. If the period of the external force is not changed, the resonance motion cannot be performed. However, according to the present invention, even if the natural frequency of the trunk fluctuates during the exercise, the resonance motion can always follow and follow this. Since the cycle of the external force applied to the living body is adjusted, efficient trunk movement can always be performed, and joint and muscle functions can be effectively improved up to the deep part.

The invention according to claim 3 is the trunk exercise method according to claim 1 or 2,
The external force applied to the living body is a force component acting in the left-right direction of the trunk, a force component acting in the longitudinal direction of the trunk, a force component acting in the height direction of the trunk, and a force component twisting the trunk , One or more force components.
Usually, it is better to perform exercises in the four directions of the trunk from the left-right direction, the front-rear direction, the height direction, and the torsion direction. In this case, a force for realizing the four-direction component may be applied.
However, depending on the subject of exercise, there may be a case where one, two, or three of the above-described four directions of exercise may be performed. In this case, an external force that causes one, two, or three movements may be applied.

The movement of the trunk in the left-right direction may be performed by applying a lateral external force to the trunk. The movement in the front-rear direction and the height direction may be performed by applying external forces in the front-rear direction and the height direction, respectively.
When a force in the front-rear direction is applied to a part off the center of the trunk, the torsional motion can be generated.

The invention according to claim 4 is the trunk exercise method according to any one of claims 1 to 3,
The amplitude of the external force is adjusted so that the magnitude of the trunk movement becomes an appropriate value.
Since the strength and elasticity of the trunk differ depending on the person, the strength of the trunk movement as a response varies even if the same external force is applied. For this reason, it is necessary to change the amplitude of the external force in order to generate a sufficiently large trunk resonating motion. According to the present invention, the amplitude of the external force can be adjusted to achieve a resonance motion having an optimum strength. For this reason, a deep joint and muscle exercise can be performed more effectively.

The invention according to claim 5 is the trunk exercise method according to any one of claims 1 to 4,
The trunk of the living body is rhythmically raised and lowered by applying the external force alternately to the left and right of the legs of an exercised person with the legs extended in the supine position and both legs lifted. A trunk exercise method comprising a step of generating a resonance motion of the trunk.

This is shown in FIG. As shown in FIGS. 1 (A) and 1 (B), put the leg in a supine position, lift the leg slightly (the angle with the floor is about 20 to 50 degrees), and slightly open the leg (depending on the purpose, usually around the shoulder width) Good), press one of the legs and pull one.
External forces F and F ′ are applied to the pelvis of the trunk through the legs. The F call F 'includes a lateral component of the trunk, a longitudinal component, and a height component, and the trunk can be moved in each direction. In addition, since the part where the F call F ′ acts is displaced from the center of the trunk, a torsional motion can be caused in the trunk.
When the external forces F and F ′ are alternately applied from the left and right legs, the pelvis is lifted up and down, and the torsional motion of the trunk can be performed. In addition, since the movement of the trunk in the lateral direction, the front-rear direction, and the height direction is performed at the same time, all the trunk movements can be performed.

If the period of the external force applied at this time coincides with the natural frequency of the trunk, as shown in FIGS. 1C and 1D, the trunk sways and vibrates. This is a resonance phenomenon that occurs when a force is applied at the natural frequency of the trunk. 1 (C) and 1 (D) show the resonance phenomenon only in the lateral direction of the trunk because it is a single men's, but the external force applied to the living body is the lateral direction, longitudinal direction, height direction, torsion of the trunk. Since it is a synthetic force having a directional component, trunk movement also has all these directional components.

As a result, the hip joint and sacroiliac joint can be used to exercise joints in the spine joint and deep trunk, and the paraspinal muscles in the deep part can also be effectively exercised (stretched and massaged).
The amplitude (stroke) of the force to be applied is usually about 10 to 20 cm, but this magnitude may be adjusted according to the subject. It is sufficient that the resonance motion can be sufficiently performed.

As described above, there have been some exercises to improve the health of the trunk, but focusing on the natural frequency of the trunk, resonance occurs at this frequency, and efficient trunk exercise. There was nothing to do. Further, there is no one that performs a resonance motion of one or more of the lateral direction, the front-rear direction, the height direction, and the torsional direction of the trunk.

When an external force having a period corresponding to the natural frequency of the trunk is applied, the trunk motion can be efficiently performed to the deep part. By exercising deep joints such as the spinal joint and sacroiliac joint, it is possible to improve diseases such as pain associated with restriction of joint movement. In addition, because deep muscles such as paraspinal muscles can be exercised, deep gold stretch and massage, which are difficult to treat with conventional methods, are performed, so that muscle spasm (rigidity) of deep muscles is eliminated, and a vicious circle of pain Can be cut off.

According to a sixth aspect of the present invention, there is provided a trunk exercising device comprising an external force supply means for applying an external force having a predetermined cycle to a living body to cause a resonance motion of the trunk of the living body.
According to the invention described in this claim, since the trunk body resonance motion is generated, the trunk motion can be performed to the deep portion safely and efficiently with a small force. For this reason, it is possible to effectively perform deep joint movement and muscle movement, which were difficult and effective in the past, and to recover the function.

According to a seventh aspect of the present invention, the trunk exercise apparatus according to the sixth aspect is provided with a trunk movement detection means for detecting trunk movement and an external force cycle control means for controlling the cycle of an external force applied to the living body, When the natural frequency of the body changes, the period of the external force applied to the living body is changed following this, so that the resonance motion of the trunk is always performed.
When the trunk resonates, the deep joints and muscles can be effectively moved, the tissue becomes flexible, and the natural frequency of the trunk changes with time. If the period of the external force is not changed, the resonance motion cannot be performed.However, according to the present invention, if the natural frequency of the trunk fluctuates during the exercise, the output of the trunk motion detection means is changed while changing the period of the external force. Look at the natural vibration frequency of the current trunk from the magnitude of the output of the trunk motion detection means, determine the same frequency as the external force cycle, and apply the external force of this cycle to the living body. Can be caused to resonate. The invention according to the present invention is a trunk exercising device that automatically controls this.

If the period of the external force is fixed, even if the trunk can be caused to resonate at first, the natural frequency of the trunk changes as the movement proceeds, so that it does not resonate. If the trunk cannot resonate, deep joints and muscles will be difficult to move, and effective movement will not be possible. According to the present invention, the period of the external force is automatically adjusted to always cause the trunk to resonate at all times. Therefore, there is no such inconvenience, and a small force can be used efficiently and effectively. Can be exercised deep.
For this reason, joint function and muscle function can be improved up to the deep part of the trunk, and effects such as blood flow improvement and pain relief can be obtained.
When resonance occurs, a large movement can be generated with a small force, so that an efficient movement can be performed.

Claim 8 is the trunk exercise apparatus according to claim 6 or 7,
The external force applied to the living body is one of a force component acting in the lateral direction of the trunk, a force component acting in the longitudinal direction of the trunk, a force component acting in the height direction of the trunk, and a force component that twists the trunk. It has more than one force component.
Usually, it is better to perform the movement in all four directions of the trunk from the left-right direction, the front-rear direction, the height direction, and the torsion direction. In this case, a force for realizing the four-direction component may be applied.
However, depending on the subject of exercise, one, two, or three of the above four directions may be performed. In this case, an external force that causes one, two, or three movements may be applied.
The movement of the trunk in the left-right direction may be performed by applying a lateral external force to the trunk. Similarly, the movement in the front-rear direction and the height direction may be performed by applying external forces in the front-rear direction and the height direction, respectively.
When a force in the front-rear direction is applied to a part off the center of the trunk, the torsional motion can be generated.
According to the invention described in this claim, it is possible to perform an optimum trunk exercise according to the characteristics of the subject.

The invention according to claim 9 is the trunk exercise apparatus according to any one of claims 6 to 8,
By adjusting the amplitude of the external force applied to the living body, the magnitude of the trunk movement is adjusted to an appropriate value.
Since the strength and elasticity of the trunk differ depending on the person, the strength of the trunk movement as a response varies even if the same external force is applied. Further, if the resonance motion is too small, the effect of trunk motion cannot be obtained, and if it is too large, there is a risk of causing a disorder.
For this reason, it is necessary to change the amplitude of the external force in order to generate the resonance motion of the trunk having an appropriate size.
According to the invention described in this claim, the amplitude of the external force can be adjusted to achieve a resonance motion having the optimum strength for the subject. For this reason, a deep joint and muscle exercise can be performed more effectively.

The invention according to claim 10 is an external force generator 1;
A shaft 2 for supplying an external force generated by the external force generator 1 to a living body with a predetermined period and amplitude;
A pedestal 3 provided on the shaft 2 to hold the legs;
A motion detector 4 for detecting the motion of the trunk in a predetermined direction;
Stretching legs in the supine position and placing the left and right legs on the pedestal 3 to control the external force generator 1 and to apply a predetermined period and amplitude of external force to the legs to cause trunk movement In exercise equipment,
When performing trunk exercise, the motion detector 4 detects the trunk motion, and adjusts the period of the external force so that the trunk motion is maximized, so that the trunk resonance motion is always performed. It is a trunk exercise device.
Further, the motion detector (4) detects the trunk motion during the trunk exercise, and adjusts the amplitude of the external force applied to the living body so that the trunk exercise intensity has an appropriate value.

An embodiment of the claimed invention is shown in FIG. 2A is a front view of the apparatus, and FIGS. 2B and 2C are a side view and a plan view when the apparatus is moving using the apparatus of FIG.
As shown in FIG. 2A, the apparatus includes an external force generator 1, a shaft 2, and a leg base 3, and 4 is an apparatus main body. The external force generator 1 generates an external force, and the shaft 2 supplies the external force generated by the external force generator 1 to the living body with a predetermined cycle and amplitude. The leg stand 3 detects the movement of the trunk in a predetermined direction. The motion detector 4 detects the motion of the trunk in a predetermined direction. Although not shown in the figure, the panel on the surface of the apparatus is provided with an operation unit for inputting exercise conditions such as a period of external force applied to the living body and exercise time. Any method such as online or various electronic media may be used to input the exercise condition.
In addition, although not shown in the figure, a trunk movement detection unit 4 that detects the movement of the trunk is also used. The trunk motion detector 4 measures the amount of movement (displacement or acceleration) of the trunk in a desired direction. In claim 8, when only the motion in a predetermined direction is viewed, the amount of motion in that direction must be measurable, but when the motion in the lateral direction of the upper body, for example, around the shoulder, is observed, the entire resonance motion can be grasped. it can. If the movement in a certain direction is seen, the whole movement can be grasped, so that the movement in one direction may be seen or the movement in a plurality of directions may be seen.

The cycle of the external force applied to the living body is the rotational speed of the shaft 2, and the external force generator 1 is controlled with reference to the set frequency data of the external force to determine the rotational speed of the shaft 2.
The amplitude of the external force applied to the living body is determined by the rotation radius r of the shaft 2. The turning radius r of the shaft 2 may be automatically controlled by the external force amplitude adjusting means so that the resonance momentum of the trunk is maximized.
When external forces F and F ′ are applied to the legs using this device, the force ft in the direction perpendicular to the floor (see FIG. 2B), the force fh in the height direction, and the force hw acting in the body side direction (FIG. 2 (C)) acts on the trunk. By these forces, forces in the lateral direction of the trunk, the longitudinal direction of the trunk, the height direction of the trunk, and the torsional direction of the trunk act.
Therefore, when the forces F and F ′ are alternately applied from both legs at the same cycle as the natural frequency of the trunk, the trunk causes a resonance motion as shown in FIGS. 1 (C) and (D). As described above, FIGS. 1C and 1D are plan views and show a resonance phenomenon only in the lateral direction of the body (the S-shaped line in the schematic diagram of the human body indicates the curvature of the trunk). The external forces F and F ′ include components in the lateral direction, longitudinal direction, and height direction of the trunk, and act on the end of the pelvis via the legs. Resonant motion in all directions: lateral, longitudinal, height, and twisting directions.

Depending on the degree of leg opening and the angle between the leg and the floor, that is, by adjusting the physique of the subject and the shaft 2, the component fs of the trunk left / right (body side) direction of the external force F, the component ft in the front / rear direction, the height direction The size of the component fh and the component fr in the torsion direction are different. In order to cope with this, it is necessary to adjust the height of the shaft 2 from the floor and the distance between the footrests 3, but in practice the amplitude (stroke) of the external force is about 10 to 20 cm, and the angle between the floor and the floor is Since it may be about 20 to 50 degrees, it can be applied to most people without strictly adjusting.

The training subject M is in a supine position on the mat 5 as shown in FIG. 2 (B), stretches the legs, and puts the left and right legs of the left and right footrests 3 on them.
The cycle of external force to be applied is set by operating the switches of the operation unit. The amplitude of the external force is adjusted to the value suitable for the training subject M by adjusting the length of the shaft 2.
However, since the natural frequency of the trunk is usually about 50 to 150 Hz, the period of the external force is not set, and it may be fixed to about 50 Hz at the beginning and exercise may be started.
The length r of the shaft 2 may be fixed to about 10 to 20 cm.

When the device is operated, the shaft 2 rotates in the R direction (see FIG. 2B), generates an external force having a predetermined cycle and amplitude, is transmitted to the leg via the leg base 3, and the living body is transmitted via the pelvis. Stimulates and causes trunk movement.
At this stage, there is no resonance of the trunk, so while exercising, the trunk movement detector 4 monitors the trunk movement and changes the frequency of the external force to maximize the trunk movement (trunk movement) The frequency is such that the output of the detector 4 is maximized. At this time, resonance of the trunk occurs.
If the exercise is continued as it is, as described above, the flexibility of the trunk increases, the natural frequency of the trunk changes, and it does not resonate. Therefore, in the invention described in this claim, the frequency of the external force is changed so that the output of the trunk motion detection unit 4 is always maximized, the resonance point is searched, and the trunk is always caused to resonate. When the trunk performs a resonance motion, as shown in FIGS. 1B and 1C, the entire trunk vibrates greatly in the left-right direction. Although only a plan view is shown in this figure, when the apparatus shown in FIG. 2 is used, the body moves greatly in the front-rear direction, the height direction, and the torsion direction.
For this reason, joints and muscles in the deep part of the trunk can be exercised greatly, and a sufficient stretch and massage effect can be obtained.

The feature of the present invention is that the resonance phenomenon is applied and the trunk motion can be efficiently performed with a small force, and the deep joints and muscles which are difficult to exercise in the deep trunk and difficult to be effective in various treatments are exercised sufficiently. It is in the point that can be made.
This is made possible by the development of a technique that causes the whole body trunk to move, resonate, and maintain the resonating motion using a unique method.

1: External force generation unit 2: Shaft 3: Leg base 4: Device main body 5: Device base F, F ′: Force applied to the living body ft: Force applied to the living body in the longitudinal direction fh: External force applied to the living body Height-direction force fs: external force applied to the living body, left-right force M: human r: shaft rotation radius R: shaft rotation direction W: distance between footrests

Claims (10)

A trunk exercise method comprising an external force supply step of applying an external force having a predetermined period to a living body to cause a resonance movement of the trunk of the living body. When trunk motion detection step 1 for detecting trunk motion and step 2 for controlling the period of external force applied to the living body so that the magnitude of trunk motion is maximized, the natural frequency of the trunk changes. The trunk exercising method according to claim 1, wherein following this, the period of the external force applied to the living body is changed to always cause the trunk body to resonate. The external force applied to the living body is a force component acting in the left-right direction of the trunk, a force component acting in the longitudinal direction of the trunk, a force component acting in the height direction of the trunk, and a force component twisting the trunk The trunk exercise method according to claim 1, wherein the trunk exercise method has one or more force components. The trunk exercise method according to any one of claims 1 to 3, wherein the magnitude of the trunk exercise is adjusted to an appropriate value by adjusting the amplitude of the external force. The trunk of the living body is rhythmically raised and lowered by applying the external force alternately to the left and right of the legs of an exercised person with the legs extended in the supine position and both legs lifted. The trunk exercise | movement method in any one of Claim 1 to 4 provided with the step which produces the resonance exercise | movement of this. A trunk exercise apparatus comprising an external force supply means for applying an external force having a predetermined cycle to a living body to cause a resonance movement of the trunk of the living body. The trunk motion detection means for detecting trunk motion and the external force cycle control means for controlling the cycle of external force applied to the living body so that the magnitude of trunk motion is maximized, the natural frequency of the trunk has changed. Sometimes this is detected by the trunk motion detection means, and the external force cycle control means is changed by the external force cycle control means according to the output of the trunk motion detection means, so that the trunk body is always resonated. The trunk exercising device according to claim 6, wherein the trunk exercising device is configured as described above. The external force applied to the living body is a force component acting in the left-right direction of the trunk, a force component acting in the longitudinal direction of the trunk, a force component acting in the height direction of the trunk, and a force component twisting the trunk The trunk exercising apparatus according to claim 6, wherein the trunk exercising apparatus has one or more force components. The external force amplitude adjusting means for adjusting the amplitude of the external force applied to the living body is provided, and the external force amplitude adjusting means is controlled so that the resonance motion of the trunk is maximized. The trunk exercise apparatus described in 1. An external force generator (1);
A shaft (2) for supplying an external force generated by the external force generator (1) to a living body with a predetermined period and amplitude;
A pedestal (3) provided on the shaft (2) to hold the legs;
A trunk movement detection unit (4) for detecting movement of the trunk in a predetermined direction;
A body that stretches its legs in the supine position, puts the legs on the footrest (3), controls the external force generator (1), and causes the legs to act on the legs by applying external forces with a predetermined period and amplitude. In the trunk exercise device,
The trunk motion detection unit (4) detects the trunk motion, and adjusts one or both of the period and amplitude of the external force so that the trunk motion is maximized, so that the trunk resonance motion is always performed. The trunk exercising device according to any one of claims 6 to 9, wherein

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