JP4991224B2 - Physical fitness judgment device - Google Patents

Description

  The present invention relates to a physical strength determination method and a physical strength determination device that can easily determine physical strength of a disabled person, an elderly person, and the like.

There is a need for a physical strength determination device that determines the physical strength of the handicapped and the elderly, uses it as a reference for rehabilitation, determines ease of falling, ease of stroking, etc., and calls attention. Japanese Patent Application Laid-Open No. 2005-185557 proposes a method for determining physical strength from a correlation between movement of the center of gravity and muscle strength using a center of gravity meter and an electromyograph.
JP 2005-185557 A

However, the conventional physical strength determination method has a problem that muscle strength cannot always be determined satisfactorily.
The present invention provides a physical strength determination method and a physical strength determination device that do not require direct measurement of muscle strength and enable determination of physical strength with simpler means.

The physical strength determination device according to the present invention includes a support base that is movably mounted on a rail provided on a base, and is supported on the support base. A plurality of load sensors for supporting the platform on the support platform at each vertex position or each side position and detecting a load of a person placed on the movable platform; and moving the movable platform horizontally from the center position of the rail; A linear actuator that linearly reciprocates in the horizontal right direction, and a control unit that receives a load detection signal from each of the load sensors and reciprocates the movable table at a predetermined set acceleration through the linear actuator, With the subject standing on the movable table, the control unit activates the linear actuator and reciprocates the movable table to detect the subject from the load detection signals detected by the load sensors. A calculation unit that calculates the position of the center of gravity of the person, a display unit that displays the movement of the position of the center of gravity of the subject as a movement trajectory when the movable table is reciprocated, and a healthy person that is measured in advance while changing the set acceleration. A storage unit that stores the movement data of the center of gravity position as reference data that is averaged according to age and gender, and the support table is reciprocated while the set acceleration of the linear actuator is changed to be mounted on the movable table. The calculation unit calculates the movement of the center of gravity of the subject from the load detection signals detected by the load sensors, displays the movement of the center of gravity on the display unit, and the control unit stores the movement in the storage unit. It is characterized in that it is possible to determine the physical strength of the subject by reading out the reference data of the same age and the same gender and displaying the reference data on the movement locus of the center of gravity of the subject.

The control unit calculates the moving speed of the center of gravity from the relationship between the moving distance and moving time of the subject's center of gravity instead of the movement track of the center of gravity, and calculates the moving speed of the center of gravity of the healthy person previously stored in the storage unit The reference data regarding the subject may be displayed on the display unit so that the physical strength of the subject can be determined.
Alternatively, an acceleration sensor is provided on each of the upper and lower body of the subject, and in a series of operations for balancing so as not to fall when the movable table reciprocates, the upper body is moved in the same direction as the movement of the lower body. It is detected as an acceleration from the movement in the direction opposite to the movement, and the acceleration data measured while changing the preset acceleration in advance is displayed on the display unit together with the reference data averaged according to the age and sex of the healthy person. It may be possible to determine the physical strength of the examiner.
Further, the base is provided on a floor rail provided on the floor perpendicular to the rail provided on the base so as to be movable in the front-rear direction, and the base is provided with the support base and the movable base. At the same time, the load on the person placed on the movable table may be detected by linearly reciprocating in the front-rear direction from the center position of the floor rail by the base linear actuator.
Further, the load sensor may it load cell der.

  According to the present invention, the subject standing on the movable table moves the upper body in the same direction as the movement and moves the lower body in the opposite direction to the movement in a series of operations for balancing so as not to fall due to the movement of the movable table. The motion is detected by the sensor as the movement of the center of gravity of the subject or the movement speed of the center of gravity, or the acceleration sensor is detected as the magnitude of acceleration, and the size of the movement range of the center of gravity and the return speed of the movement of the center of gravity are detected. Since the physical strength of the subject is determined based on the size and the magnitude of acceleration, it is not necessary to measure the muscular strength, that is, since the above-described series of operations is based on the muscular strength, The physical strength can be determined by simpler means of detecting the movement of the center of gravity, the moving speed of the center of gravity, and the magnitude of acceleration.

The best mode for carrying out the present invention will be described below in detail with reference to the accompanying drawings.
FIG. 1 is a plan view showing an example of the physical strength determination device 10, and FIG. 2 is a side view thereof.
A movable base 12 is fixed on the support base 16 via load sensors 14a, 14b, 14c such as three load cells.

  The support base 16 is guided on two rails 20 and 20 disposed on the base 18 so as to be movable in the left-right direction in FIG. Reference numeral 22 denotes a linear actuator, which is composed of a ball screw 24 screwed to the support base 16 and a motor 26 that rotationally drives the ball screw 24 in the illustrated example.

The linear actuator 22 causes the control unit 28 (FIG. 3) to reciprocate the movable base 12 in the left direction and the right direction, respectively, with the center in the left-right direction in FIG. 1 as the zero position.
At this time, the linear actuator 22 can reciprocate the movable platform 12 at any plural stages of set acceleration (maximum acceleration) by the control unit 28.
This set acceleration can be set and changed by an input means (not shown), and is executed while the motor 26 is controlled by the control unit 28.

An encoder 17 is disposed on the support base 16, and a wheel 19 that rolls on the base 18 is attached to the rotation shaft of the encoder 17, and the movable base 12 is moved by a linear actuator 22. The actual acceleration at the time can be detected.
Of course, the linear actuator 22 can employ not only the configuration of the ball screw 24 and the motor 26 but also other actuators such as a cylinder device, a mechanism for converting the crank mechanism into a linear motion, and a linear motor.

  The three load sensors 14a, 14b, and 14c are arranged so as to be located at the vertices of the isosceles triangle. When the subject stands with the foot mark 13 at a substantially central position of the movable table 12, a substantially equal load is applied to each of the load sensors 14a, 14b, 14c. The center of gravity comes to come.

As shown in FIG. 3, detection signals from the load sensors 14 a, 14 b, and 14 c are input to the control unit 28. The control unit 28 amplifies each of the input detection signals, a filter 30 connected to each amplifier 29, an A / D converter 31, and a signal digitized by the A / D converter 31. It has the calculating part 32 which calculates. The calculation unit 32 calculates and stores the position of the center of gravity of the subject based on the input signal, and can display the movement locus of the center of gravity on the display unit 33.
Further, the calculation unit 32 can acquire the movement range of the center of gravity set in advance and stored in the memory 34 from the memory 34.

  In the present invention, in a series of operations in which a subject standing on the movable table 12 balances so as not to fall due to the movement of the movable table 12, the upper body (particularly the neck) is moved in the same direction as the movement, and the lower body (particularly the waist). ) Is moved in the opposite direction to the movement by a plurality of sensors 14a, 14b, 14c and a control unit 28 to which detection signals from the plurality of sensor sensors 14a, 14b, 14c are input. The physical strength of the subject is determined based on the size of the movement range of the center of gravity. It is characterized by that.

  In addition, the movement of the center of gravity of a plurality of healthy persons is measured, and the average value thereof is used as a reference value. Whether the movement range of the center of gravity of the subject is within the range of the reference value or a plurality of steps from this reference value. It is preferable to determine the physical strength of the subject depending on which set range of the set movement range.

  Consider the case where the movable base 12 is suddenly moved linearly to the right by FIG. 4 (FIG. 4B). At this time, initially, that is, while the corresponding reaction of the body is not activated, the body is inertial and the upper body and the lower body move to the opposite side of the moving direction of the movable base 12. Next, in the normal reaction, as shown in FIG. 4 (c), the upper body (neck) is moved in the same direction as the movement of the movable table 12, and the reaction causes the lower half (waist) to move in the opposite direction to the movement of the movable table 12. To try to balance the body.

However, when the external force from the movable table 12 is large, the movement cannot be balanced only by the movement of FIG. 4C, and as shown in FIG. It will be a system to prevent falls by taking steps.
If this operation is not possible, as shown in FIG. 4 (e), the vehicle falls over with almost the initial movement.

  5 to 7 schematically show the movement of the center of gravity. 5 shows a case where the balance is achieved in the state of FIG. 4C, FIG. 6 shows a case where the state of FIG. 4D is reached, and FIG. 7 shows a case where the state of FIG. The thick black line at the bottom of each figure schematically shows the movement of the body.

The actual physical strength is determined as follows.
First, the average movement of the center of gravity of healthy subjects in each age is measured. For that purpose, data of multiple people is collected. For data collection, have the subject stand on the movable base 12, have the subject move so that the center of gravity of the subject becomes the center position in the display unit 33, and then drive the linear actuator 22. Then, the movable base 12 is moved intermittently in the left direction or the right direction from the center position, and the movement direction is expected to be random so that it cannot be predicted by the subject. . In addition, the maximum acceleration is appropriately changed by a driving unit of a moving table (not shown). In this way, data on the movement of the center of gravity of a plurality of persons is collected. For safety, a handrail may be appropriately disposed around the physical strength determination device 10.

8 to 11 are diagrams in the case where the center of gravity movement of a healthy person is actually measured and displayed on the display unit 33. FIG.
The distance between the inner sides of both feet is set to 5 cm (bare feet), and the maximum acceleration is set to 5 stages of 1.05, 2.10, 3.15, 4.20, 5.25 m / s ² , and the movable platform 12 is set to the center. The measurement was performed by moving 10 cm from the left to the right. None of them had fallen.

FIG. 8 is for a man in his 40s (subject A). Note that L1.05 is a value when the movable base 12 is moved in the leftward direction with a maximum acceleration of 1.05 m / s ² , and R1.05 is a maximum acceleration of 1.. When moving at 05 m / s ² .
9 is for a man in his twenties (subject B), FIG. 10 is for a man in his twenties (subject C), and FIG. 11 is a man in his twenties (subject D). Is.
FIG. 12 shows measured values (fluctuation distance of the center of gravity) at each moving acceleration of males in their 20s and males in their 60s. The movement distance of the center of gravity of a male in his 60s is larger than the movement distance of the center of gravity of a male in his 20s.

As shown in FIGS. 8 to 11, the movement locus of the center of gravity naturally forms a closed loop. Since the movable table 12 moves in the left-right direction with respect to the subject, the movement of the center of gravity naturally increases in the left-right direction. However, the center of gravity moves in the front-rear direction.
In the present invention, muscle strength is not measured. The subject exerts his muscular strength as a fall-down by moving the movable base 12 leftward or rightward. A person with greater physical strength (muscular strength) has a greater force to straddle, so there is less movement of the body to the left and right, and therefore the center of gravity does not move much.

Data on the movement of the center of gravity by age and gender is taken and averaged data is obtained.
These averaged data are used as reference values, and as shown in FIG. 13, a set range of center of gravity movement is displayed on the display screen in a plurality of stages in the left-right direction centering on the reference value, for example, L1, L2, L3, R1. , R2, R3, and in the front-rear direction, for example, F1, F2, F3, B1, B2, B3, and in what range (stage) the subject's center of gravity shift is Thus, the physical strength is determined. It should be noted that it is preferable to examine the maximum acceleration of the movable platform 12 and determine the physical strength by comparing with the data at the optimal maximum acceleration.

  The left foot of the subject is detected by moving the movable base 12 in the left direction and the right direction and detecting the movement of the center of gravity of the subject when the movable base 12 is moved in the respective directions and comparing with the setting data. Alternatively, the muscle strength of the right foot can be estimated and the ease of falling can be determined. In addition, the center of gravity movement in the front-rear direction can be estimated, for example, the ease of stroking.

Further, the physical strength may be expressed as, for example, a risk of falling or stroking by a distance from the reference value of the measured value of the subject, or may be expressed by physical strength age or the like.
Moreover, the physical strength determination apparatus 10 in this Embodiment can be used also as a training (training) apparatus. That is, by moving the movable table 12, the muscular strength and the sense of balance can be improved. In addition, since the movement of the center of gravity can be measured each time, training can be performed while recognizing the improvement in physical strength, and the training of the user can be encouraged. The physical strength measuring device according to the present invention includes such a training device.

  In the above embodiment, the physical strength is determined by the movement range (distance) of the center of gravity. However, the speed of response to the movement of the center of gravity, that is, the speed of movement of each part that attempts to reduce the movement of the center of gravity is measured. By doing so, the physical strength can be determined. This is because a person with physical strength can respond faster. This speed of response can be achieved by analyzing the velocity component of the center of gravity movement signal.

14A and 14B show an embodiment for detecting the moving speed of the center of gravity. In the figure, two waveforms are shown. The two waveforms are synchronized in time.
FIG. 14A shows the movement of the movable base 12 in the left-right direction in terms of position (vertical axis) and time (horizontal axis). The upper horizontal portion of the trapezoidal waveform represents the time when the movable table 12 is at the right position, and the lower horizontal portion represents the time when the movable table 12 is at the left. The difference between both positions is 150 mm.

An oblique portion between the two upper and lower horizontal portions represents that the movable table 12 is moving. The acceleration at this time was 2.1 m / s ² . At the left end portion of the figure, the movable base 12 first moves from the right to the left with this acceleration, and eventually decelerates at the same negative acceleration and stops at the left position.
The movement of the center of gravity at this time is represented by the graph in FIG. Even if the movable table 12 moves, the body cannot follow, and the foot is taken and the center of gravity moves momentarily to the right. However, the balance operation of the body and the stop operation of the movement of the movable table 12 return the center of gravity to the original position.

  In the next step in which the movable table 12 moves from left to right, the movement of the center of gravity is also reversed. In FIG. 14, the center-of-gravity movement for each of the left and right movements is recorded four times. The example shown in FIG. 14 is a case of a 20-year-old male. However, if the aging or there is a failure, the balance of the center of gravity cannot be quickly dealt with. A tendency to take time to (return) will be observed.

  In FIG. 14B, the vertical axis represents the center of gravity movement distance and the horizontal axis represents time. The elapsed time and the moving distance of the center of gravity are input to the control unit 28, whereby the moving speed of the center of gravity can be calculated. The return speed of the center of gravity is the speed of response to the movement of the center of gravity, and physical strength can be determined based on the magnitude of the movement speed of the center of gravity.

  Next, in another embodiment according to the present invention, the subject standing on the movable table 12 moves the upper body (particularly the cervix) in a series of operations for balancing so as not to fall down due to the movement of the movable table 12. The movement of the lower body (especially the lower back) in the same direction as the movement is detected as acceleration by an acceleration sensor (not shown) attached to the lower and upper body of the subject, and depending on the magnitude of the acceleration Determine the physical strength of the subject.

  In addition, the magnitude of the acceleration of a plurality of healthy persons is measured, and the average value thereof is used as a reference value. Whether or not the magnitude of the subject's acceleration is within the range of this reference value, or a plurality of values from this reference value. It is preferable to determine the physical strength of the subject based on which set range of the stage set range is within.

The acceleration may be detected together with the center of gravity movement, or only the acceleration may be detected.
15 to 17 schematically show changes in acceleration in the states of FIGS. 4 (c) to 4 (e). In these processes, the upper body (neck) and lower body (waist) move differently, so if acceleration sensors are attached to the subject's neck and waist, the acceleration of each part's movement You will be able to see the changes. The physical strength can be determined by detecting the change in acceleration shown in FIG. The smaller the movement, that is, the smaller the acceleration, the more the person is struggling with muscular strength, which means that the physical strength is greater.

  FIG. 18 shows the detection status of the subject A. FIG. 4A shows the moving direction and size (distance) of the stage (movable table 12), FIG. 4B shows the waist acceleration, and FIG. 4C shows the neck acceleration. Although the change in the acceleration of the neck is larger than the acceleration of the waist, it is considered that the determination of physical strength can be more accurately determined by looking at the change in the acceleration of the waist where the foot struts appear directly.

FIG. 19 shows the moving direction and size of the movable base 12 (the same figure (a)), the load change of the load sensor (load cell) (the same figure (b)), and the acceleration of the waist (for the subject B). The figure (c)) is shown.
FIG. 20 shows the moving direction and size of the movable base 12 (the same figure (a)), the load change of the load sensor (load cell) (the same figure (b)), and the acceleration of the waist (for the subject C). The figure (c)) is shown.
FIG. 21 shows the moving direction and size of the movable base 12 (the same figure (a)), the load change of the load sensor (load cell) (the same figure (b)), and the acceleration of the waist (for the subject D). The figure (c)) is shown.

  In this way, changes in the acceleration of healthy persons of many ages and genders are measured, the average value is converted into data, the measured data of the subject is compared with these, and the difference in the size of the subject is examined. Person's physical strength can be estimated.

  In each of the above embodiments, the movable base 12 is moved in the horizontal and horizontal directions. However, the movable base 12 is reciprocated in the left and right directions at a required rotation angle, or is rotated only in one direction at a required angle, and the center of gravity is moved at that time. Alternatively, changes in acceleration of the waist and neck may be measured.

FIG. 22 is an explanatory view showing another embodiment.
In the present embodiment, the movable base 12 is supported on a support base (not shown) via the four load cells 14 a to 14 d, and the support base is horizontally moved along the rail 20 on the base 18. It is provided to move. Further, the base 18 itself is provided so as to be movable along a rail 23 provided on the floor surface in a direction orthogonal to the rail 20. The linear actuators of the movable base 12 and the base 18 are also composed of a ball screw and a motor (not shown).

  In the present embodiment, by moving the movable table 12 in the left-right direction, the movement of the center of gravity of the subject mainly in the left-right direction is detected by the load cells 14a and 14b and the movable table together with the base 18 as described above. The movement of the center of gravity of the subject mainly in the front-rear direction is detected by driving 12 in the front-rear direction in the figure along the rail 19. Thereby, the movement of the center of gravity of the subject can be detected in more detail.

It is a top view of a physical strength determination apparatus. It is a side view of FIG. It is a block diagram which shows the structure of a load sensor and a control part. It is a schematic diagram which shows the state of a subject's movement when a movable stand moves rightward. It is a schematic diagram which shows the movement of the gravity center at the time of FIG.4 (c). It is a schematic diagram which shows the movement of the gravity center at the time of FIG.4 (d). It is a schematic diagram which shows the movement of the gravity center at the time of FIG.4 (e). It is a graph which shows the movement of the gravity center of the subject A. It is a graph which shows the movement of the gravity center of the subject B. It is a graph which shows the movement of the gravity center of the subject. It is a graph which shows the movement of the gravity center of the subject D. It is the graph which compared the movement distance of the gravity center of the 20's man and the 60's man. It is explanatory drawing which shows the some setting line in a display part. It is a graph showing the moving speed of a gravity center. It is a schematic diagram which shows the change of the acceleration at the time of FIG.4 (c). It is a schematic diagram which shows the change of the acceleration at the time of FIG.4 (d). It is a schematic diagram which shows the change of the acceleration at the time of FIG.4 (e). It is a graph which shows the acceleration etc. of the waist of the subject A. It is a graph which shows the acceleration of the waist of subject B, and the like. It is a graph which shows the acceleration etc. of the waist of the subject C. It is a graph which shows the acceleration etc. of the waist of the subject D. It is explanatory drawing of embodiment which provided the movable stand so that a movement to an XY direction was possible, and arrange | positioned four sensors.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Physical strength determination apparatus 12 Movable base 14a, 14b, 14c, 14d Load sensor 16 Support part 18 Base 20 Rail 22 Linear actuator 23 Rail 24 Ball screw 26 Motor 28 Control part 29 Amplifier 30 Filter 31 A / D converter 32 Calculation part 33 Display unit 34 Memory

Claims (5)

A support base is movably mounted along the rail on a rail provided on the base, and is a polygonal movable base supported on the support base;
A plurality of load sensors for supporting the movable table on the support table at each vertex position or each side position and detecting a load of a person who is placed on the movable table;
A linear actuator that linearly reciprocates the movable base from the center position of the rail in the horizontal left direction and the horizontal right direction; and
A load detection signal is input from each of the load sensors, and a control unit that reciprocates the movable table through the linear actuator at a predetermined set acceleration ,
With the subject standing on the movable table, the control unit activates the linear actuator to reciprocate the movable table, and from the load detection signals detected by the load sensors, A computing unit that computes the center of gravity position, a display unit that displays the movement of the subject's center of gravity position as a movement locus when the movable table is reciprocated, and a center of gravity position of a healthy person measured in advance while changing the set acceleration A storage unit that stores, as reference data averaged according to age and gender,
The computing unit computes the center of gravity movement of the subject placed on the movable base by reciprocating the support base while changing the set acceleration of the linear actuator from the load detection signals detected by the load sensors. The display unit displays the center of gravity as a movement locus, and the control unit reads the reference data of the same age and the same sex stored in the storage unit, and displays them on the subject's center of gravity movement locus so as to be superimposed on the subject. A physical strength determination apparatus characterized by enabling the physical strength determination of an examiner . The control unit calculates the moving speed of the center of gravity from the relationship between the moving distance and moving time of the subject's center of gravity instead of the movement track of the center of gravity, and calculates the moving speed of the center of gravity of the healthy person previously stored in the storage unit The physical strength determination apparatus according to claim 1, wherein the reference data regarding the physical strength of the subject can be determined by overlapping the display on the display unit. An acceleration sensor is provided on each of the upper and lower body of the subject, and in a series of operations for balancing so as not to fall when the movable table reciprocates, the upper body moves in the same direction as the lower body moves. Acceleration data detected while moving in the opposite direction as acceleration, and the acceleration data measured while changing the preset acceleration in advance along with the reference data averaged according to the age and gender of the healthy person are displayed and superimposed on the display unit. The physical strength determination apparatus according to claim 1, wherein it is possible to determine physical strength. The base is provided so as to be movable in the front-rear direction on a floor rail provided on the floor surface orthogonal to the rail provided on the base, and the base together with the support base and the movable base The physical strength determination device according to any one of claims 1 to 3, wherein a load of a person placed on the movable table is detected by linearly reciprocating in a front-rear direction from a center position of the floor rail by a table linear actuator. The physical strength determination device according to any one of claims 1 to 4, wherein the load sensor is a load cell.

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