JPH10137362A - Control device for exercise-loading device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control device for an exercise-loading device, for determining a desired load optimum for the physical body with no application of any appreciably high load to the physical body during every physical exercise, and for controlling the load to the exercise-loading device in order to apply the desired load to the physical body. SOLUTION: When a break point F of increase in a labor strength value calculated by a labor strength calculating means 82 occurs as the load applied to a physical body is increased by an initial load increasing means 84 during an initial stage of an exercise period, a desired labor strength value determining means 86 determines a desired labor strength value PRPM based on the break point F. Further, an exercise-load adjusting means 90 stops increasing of the load by the initial load increasing means 84, and a load of an ergometor is adjusted as if an actual labor strength value PRP follows the desired labor strength PRPM. Accordingly, an optimum load is determined with no application of any appreciably high load to the physical body during every physical exercise, and the load of an exercise-loading device is controlled so as to apply its desired load.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for an exercise load device for applying an exercise load to a living body.

[0002]

2. Description of the Related Art Exercise load devices, such as ergometers and treadmills, which apply a load to a living body by being mechanically operated in association with the movement of the living body are known. When an exercise load is applied to a living body using such an exercise load device for exercise therapy or the like, exercise intensity or heart (pulse) pulse rate determined by exercise prescription is continued for a predetermined time. Was. As the exercise intensity, for example, the target work amount of the exercise load device, that is, the target wattage and its maintenance time are determined, and as the heart (pulse) pulse rate, the target heart (pulse) pulse and its maintenance time are determined. . In the exercise of such a living body, the load at the time of switching from aerobic exercise to anaerobic exercise is considered as an optimal exercise load in order to enhance exercise efficiency, and in the above exercise prescription, such an optimal exercise load is considered. The target value is determined so that the exercise load is applied to the living body.

For this reason, in a conventional exercise load control apparatus, the target wattage is set to be equal to the actual wattage consumed by the exercise load device, or the target heart (pulse) pulse rate and the living body are compared with each other. Of the exercise load device is controlled so that the actual heart (pulse) pulse rate matches the actual heart (pulse) rate, and the load is maintained for a predetermined maintenance time.

[0004]

However, when determining the exercise prescription, the maximum load is used as a basis for calculating the optimal load for each living body, so that the maximum load is applied to each living body, so that there is no pain. In addition, it may be difficult to load a diseased organism to such a maximum. In addition, the target exercise intensity and the target heart (pulse) pulse rate determined by the exercise prescription are repeatedly determined in a cycle of several weeks to about two months, and take into account the physical condition of the day when the living body exercises. Therefore, the exercise load may be too heavy for the living body of the day.

The present invention has been made in view of the above circumstances, and a purpose thereof is to determine an optimum target load without imposing a great burden on a living body every time a movement of the living body is performed. An object of the present invention is to provide a control device for an exercise load device that controls the load of the exercise load device so that the target load is applied.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the gist of the present invention is to determine an optimal load of a living body in a movement load device which is mechanically operated in relation to the movement of the living body. And a controller that adjusts the load of the exercise load device so that the optimal load is applied during the exercise period of the living body, wherein (a) an initial stage of increasing the load applied to the living body in the initial section of the exercise period. Load increasing means, (b) an exercise load value detecting means for detecting an exercise load value loaded on the living body, and (c) a target to be given to the living body with an increase in load by the initial load increasing means. Target exercise load value determining means for determining an exercise load value, (d)
When the target exercise load value is determined by the target exercise load value determination means, the increase in the load by the initial load increase means is stopped, and the actual exercise load value follows the target exercise load value. Exercise load adjusting means for adjusting the load of the exercise load device.

[0007]

In this way, the target exercise load value is determined by the target exercise load value determining means as the load applied to the living organism is increased in the initial period of the exercise period of the biological body by the initial load increasing means. When determined, the exercise load adjusting means stops the increase in the load by the initial load increasing means, and adjusts the load of the exercise load device so that the actual exercise load value follows the target exercise load value. Therefore, each time the living body exercises, the optimal target load is determined without imposing a heavy load on the living body, and the load of the exercise load device is controlled so that the target load is applied. In addition, in this way, since it does not apply the load to the individual living body to the maximum, it does not force the living body to suffer,
Exercise therapy can be performed on a living body having a disease, and an optimal load suitable for the physical condition of the day on which the living body exercises, that is, an initial stage of anaerobic exercise or a maximum intensity of aerobic exercise is given.

[0008]

In another embodiment of the present invention, the exercise load value detecting means preferably includes an exercise intensity value calculating means for calculating an exercise intensity value which is a product of a blood pressure value of a living body and a pulse rate, and As exercise load value determining means, there is a target exertion intensity value determining means for determining a target exertion intensity value based on a turning point of the increase in the exertion intensity value with an increase in the load by the initial load increasing means; As the load adjusting means, when the target exertion intensity value is determined by the target exertion intensity value determining means, the increase in the load by the initial load increasing means is stopped, and the actual exertion intensity follows the target exertion intensity value. And exercise load adjusting means for adjusting the load of the exercise load device. According to this configuration, as the load applied to the living body in the initial section of the exercise period of the living body is increased by the initial load increasing means, the turning point of the increase in the exertion intensity value calculated by the exertion intensity value calculating means is increased. Occurs, the target exertion intensity value determining means determines the target exertion intensity value based on the break point. Then, the increase in the load by the initial load increasing means is stopped by the exercise load adjusting means, and the load of the exercise load device is adjusted so that the actual exertion intensity follows the target exertion intensity value. Each time the exercise is performed, the optimal target load is determined without imposing a great burden on the living body, and the load of the exercise load device is controlled so that the target load is applied.

[0009] Preferably, the control device of the exercise load device includes a break point judging means for judging a break point of the increase in the exertion intensity value accompanying an increase in the load by the initial load increasing means. The target exertion intensity value determining means determines a target exertion intensity value lower than the exercise intensity value corresponding to the break point by subtracting a preset correction value from the exercise intensity value corresponding to the break point. Things. The preset correction value may be a preset constant value, but preferably, the age of the living body from a predetermined relationship,
It is a value determined based on gender, athletic ability, and the like. In this way, the target exertion intensity value is set to a value lower than the value corresponding to the turning point of the increase in the exertion intensity value. Then, it is compensated that the target exertion intensity value becomes higher than the actual value due to the delay of the reaction of the living body, and the optimal target exertion intensity value is determined.

[0010] Preferably, the control device of the exercise load device includes a break point judging means for judging a break point of the increase in the exertion intensity value accompanying an increase in the load by the initial load increasing means. The target exertion intensity value determining means calculates a value corresponding to a delay time from when the exercise load is applied to the living body to when the blood pressure value or the pulse rate of the living body changes, from the exertion intensity value corresponding to the break point. By subtracting, a target exertion intensity value lower than the exertion intensity value corresponding to the breakpoint is determined. The value corresponding to the delay time is preferably determined based on the actual delay time from when the initial load is applied to the living body by the initial load raising means to when the blood pressure value or the pulse rate of the living body changes. You. In this way, the target exertion intensity value is set to a value lower than the value corresponding to the turning point of the increase in the exertion intensity value. Then, it is compensated that the target exertion intensity value becomes higher than the actual value due to the delay of the reaction of the living body, and the optimal target exertion intensity value is determined.

Preferably, the control device of the exercise load device controls the living body based on the fact that the elapsed time from the application of the exercise load to the living body reaches a predetermined reference time. Exercise load end determination means for determining the end of application of the exercise load, and when the end of the application of the exercise load to the living body is determined by the exercise load end determination means, the exercise load on the living body is reduced by a preset reduction procedure. And exercise load termination processing means.
With this configuration, when the exercise load termination determining means determines that the application of the exercise load to the living body has been completed, the exercise load termination processing means automatically sets the exercise load on the living body according to a preset reduction procedure. As a result, the inconvenience caused by insufficient cooling down is prevented from occurring in the living body.

[0012] Preferably, the initial load increasing means continuously increases the load on the living body at a predetermined speed. With this configuration, the load applied to the living body in the initial section of the movement period of the living body is increased with the passage of time at a preset speed,
Compared to the case of stepwise increase, there is no stepwise increase of the exertion strength corresponding to the stepwise increase of the load, and there is an advantage that the break point can be easily determined.

Preferably, the initial load increasing means increases the load on the living body in a stepwise manner while increasing the load on the living body by a predetermined increase width and then maintaining the value for a predetermined period. . In this way, since the break point is determined when the load on the living body is constant, there is an advantage that the delay in exertion intensity due to the reaction of the living body is reduced.

[0014]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a diagram illustrating a configuration of a control device of an exercise load device to which the present invention is applied, and includes a well-known ergometer 6 functioning as an exercise load device and a blood pressure monitoring device 8.

The blood pressure monitoring device 8 has a rubber bag in a cloth band-shaped bag and is cuff 10 wound around an upper arm 12 of a patient, for example, and is connected to the cuff 10 via a pipe 20. A pressure sensor 14, a switching valve 16, and an air pump 18 are provided. The switching valve 16 is provided with the cuff 10
It is configured to be able to switch between three states: a pressure supply state in which the supply of pressure into the cuff is allowed, a slow discharge state in which the cuff 10 is gradually discharged, and a rapid discharge state in which the cuff 10 is rapidly discharged. Have been.

The pressure sensor 14 detects the pressure in the cuff 10 and outputs a pressure signal SP representing the pressure to the static pressure discriminating circuit 22.
And the pulse wave discrimination circuit 24. The static pressure discriminating circuit 22 includes a low-pass filter, and a cuff pressure signal S representing a steady pressure included in the pressure signal SP, that is, a cuff pressure.
K is discriminated and the cuff pressure signal SK is supplied to the electronic control unit 28 via the A / D converter 26.

The pulse wave discrimination circuit 24 includes a band-pass filter, and a pulse wave signal SM which is a vibration component of the pressure signal SP.
₁ is discriminated in frequency and the pulse wave signal SM ₁ is supplied to the electronic control unit 28 via the A / D converter 29. The cuff pulse wave represented by the pulse wave signal SM ₁ is a pressure vibration wave generated from a brachial artery (not shown) and transmitted to the cuff 10 in synchronization with the heartbeat of the patient.

The electronic control unit 28 includes a CPU 30, R
The microcomputer 30 includes a so-called microcomputer having an OM 32, a RAM 34, an I / O port (not shown), and the like. The CPU 30 executes signal processing using a storage function of the RAM 34 according to a program stored in the ROM 32 in advance. Thus, a drive signal is output from the I / O port to control the switching valve 16 and the air pump 18 and control the display contents of the display 36.

As shown in detail in FIG. 2, the pressure pulse wave sensor 38 is located on the downstream side of the artery of the upper arm 12 of the patient to which the cuff 10 is mounted, for example, the wrist or the side on which the cuff 10 is not mounted. On the wrist, the mounting band 42 is detachably attached to the wrist 42 with the open end of the housing 44 having a container shape facing the skin 40. In the pressure pulse wave sensor 38, a pressing member 50 fixed to the diaphragm 46 is provided inside the housing 44.
Are provided so as to be relatively movable and protrudable from the open end of the housing 44, and a pressure chamber 45 is formed by the housing 44, the diaphragm 46, and the like. The pressure chamber 45 is supplied with pressurized air from an air pump 56 via a pressure regulating valve 58, whereby the pressing member 50 has a pressing force P _HD corresponding to the pressure in the pressure chamber 48. It is pressed toward the radial artery 48 directly below the epidermis 40.

The pressing member 50 has a large number of semiconductor pressure-sensitive elements (not shown) on a pressing surface 51 of a semiconductor chip made of, for example, single crystal silicon or the like, for example, about 0.2 mm in a direction orthogonal to the radial artery 48. Pressure vibration waves or pressure pulsations transmitted from the radial artery 48 through the epidermis 40 by being pressed toward the radial artery 48 immediately below the epidermis 40 of the wrist. A wave is detected for each beat, and a pressure pulse wave signal SM ₂ representing the pressure pulse wave is supplied to the electronic control device 28 via the A / D converter 52.

The CPU 30 of the electronic control unit 28
According to a program stored in the ROM 32 in advance,
A drive signal is output to the air pump 56 and the pressure regulating valve 58,
The pressure in the pressure chamber 45, that is, the pressing force against the epidermis of the pressing member 50, is determined so as to determine the optimum pressing value P _{HDP at} which a part of the tube wall of the radial artery 48 becomes flat and to maintain the value. That is, in vivo continuous blood pressure monitoring, optimum pressing force of the pressing member 50 P _HDP is determined based on the pressure pulse wave sequentially obtained at a pressure changing process in the pressure chamber 45, the optimum pressing force of the pressing member 50 P _HDP Pressure regulating valve 5 to maintain
8 is controlled.

The setting unit 60 includes, for example, a keyboard, and outputs to the electronic control unit 28 set values such as a correction value and an exercise period which are input by manual operation. Further, the clock circuit 62 records the current time in the electronic control unit 28 to record the detection time of the pressure pulse wave, the blood pressure value, or the like, or to record the time at the start of the exercise period and determine the end of the exercise period. Output to

The ergometer 6 is a movement mechanism, that is, a movement load device that is driven in association with the movement of the living body.
And an electromagnetic brake 68 operatively connected via a chain 66. The electromagnetic brake 68 controls the rotational resistance by, for example, adjusting the magnitude of the eddy current generated in the rotating disk, or controls the rotational resistance by adjusting the magnitude of the generated current induced in the rotating coil. Control. The electromagnetic brake 68 functions as an exercise load adjusting unit that changes an operation state of the exercise mechanism, thereby changing a load imposed on the living body during exercise.

FIG. 3 is a functional block diagram for explaining a main control function of the electronic control unit 28 for controlling the exercise load device. In the figure, the cuff pressure control means 70 is a reference blood pressure measurement means which is activated prior to continuous blood pressure measurement, that is, prior to use of the ergometer 6, for example, for determination of the pressure pulse wave blood pressure correspondence shown in FIG. During the 72 measurement periods, the compression pressure of the cuff 10 is varied according to well-known measurement procedures. For example, after the cuff pressure control unit 70 rapidly increases the compression pressure of the cuff 10 to a preset pressure increase target value of about 180 mm higher than the systolic blood pressure of the living body, the cuff pressure control unit 70 performs 3 mmHg in a measurement section where the blood pressure determination algorithm is executed. When the blood pressure measurement is completed, the pressure of the cuff 10 is released.

The reference blood pressure measuring means 72 performs the cuff 10 in the process of gradually reducing the compression pressure of the cuff 10 in the above-described measurement section prior to the load increase by the initial load increasing means 84 and the exercise load control by the exercise load adjusting means 90. The systolic blood pressure BP _SYS , the average blood pressure BP _MEAN , and the diastolic blood pressure BP are determined by the well-known oscillometric method based on the change in the magnitude of the cuff pulse wave generated as the pressure oscillation of the subject.
_{The DIA} is measured and displayed on the display 36.

The pressure pulse wave blood pressure correspondence relationship determining means 74 includes a load increase by the initial load increasing means 84 and an exercise load adjusting means 9.
Prior to exercise load control by zero, reference blood pressure measurement means 7
When the blood pressure value by 2 is measured, is measured with the pressure pulse wave magnitude P under the peak value of _M P _Mmin and the upper peak value P _Mmax detected by pressure pulse wave sensor 38, by the reference blood pressure measuring means 72 The pressure pulse wave blood pressure correspondence relationship between the blood pressure value BP (systolic blood pressure value BP _SYS , diastolic blood pressure value BP _DIA ) is determined in advance for a predetermined living body. This correspondence is, for example, shown in FIG. 4, and is represented by an equation of EBP = α · P _M + β. Here, α is a constant indicating a slope, β is a constant indicating an intercept, and EBP is an estimated blood pressure value determined continuously.

The estimated blood pressure value determining means 76 determines the correspondence EB determined by the pressure pulse wave blood pressure correspondence determining means 74.
P = the f (P _M), based on the magnitude P _M of the pressure pulse wave detected sequentially by pressure pulse wave sensor 38, the estimated blood pressure value EB
P (systolic blood pressure EBP _SYS , diastolic blood pressure EBP _DIA ) are sequentially determined, and the determined estimated blood pressure EBP is displayed on the display 3.
6 is displayed as a continuous trend. The above-mentioned cuff pressure control means 70, reference blood pressure measurement means 72, pressure pulse wave sensor 38, pressure pulse wave blood pressure correspondence relation determination means 74, estimated blood pressure value determination means 76
However, it functions as a continuous blood pressure measuring means 78 that continuously measures the blood pressure value of the living body in a non-invasive manner in synchronization with the pulse.

The pulse rate calculating means 80 includes, for example, a pressure pulse wave cell.
Based on the period of the pressure pulse wave output from the sensor 38,
Pulse rate PR is continuously calculated in synchronization with the pulse cycle.
You. Exercise load to detect the exercise load value loaded on the living body
The load value detecting means, that is, the exertion intensity value calculating means 82,
Of the pulse rate PR calculated by the pulse rate calculating means 80 of FIG.
The estimated blood pressure value E measured by the continuous blood pressure measuring means 78
BP (for example, EBP _SYS) Is the product of exercise intensity value P
RP (= PR x EBP_SYS： Pressure Rate Product)
Is sequentially calculated in synchronization with the pulse cycle. Above work intensity value
PRP is the exercise load value loaded on the living body or the living body.
Corresponds to the exercise intensity.

The initial load raising means 84 includes the ergometer 6
During the exercise period of the living body using, for example, t _{0 in} FIG.
To increase the load to be applied to the living in the initial interval as shown in t _2. For example, the initial load raising means 84
The load on the living body is continuously increased at a predetermined speed. The continuous rising speed or stepwise rising speed of the load is
The value is set to the highest value in a range where the accuracy of determination of a break point described later is maintained.

Determining a target exercise load value to be given to the living body
Target exercise load value determining means, i.e., target exertion intensity value determination
The means 86 is provided above the load by the initial load increasing means 84.
Based on the break point of the PRP, which increases with the body
Target effort intensity value PRP _MTo determine. For example,
The target exertion intensity value determining means 86 is
The living body accompanying the increase in the load by the initial load raising means 84
When the break point F of the increase in the exertion intensity value PRP is determined,
At the point of occurrence of the turning point F, ie, t in FIG.₁ Corresponding to a point in time
Work intensity value PRP_FTarget exercise intensity value PRP lower than_M
To determine. That is, the target exertion intensity value determining means 86
Is, for example, the age, sex,
Alternatively, a correction value ΔP preset based on athletic ability, etc.
RP is the exertion intensity value PRP corresponding to the above-mentioned break point F_FFrom
Target work intensity value PRP by subtracting_MDetermine
You. Alternatively, the target exertion intensity value determination means 86 may
After the load is applied to the living body in the section, the blood of the living body
Corresponds to the delay time before the pressure value or pulse rate changes
The value ΔPRP is used as the exertion intensity value PRP corresponding to the above-mentioned break point F_F
From the target work intensity value PRP_MDecide
I do.

Here, the break point judging means 88 includes
A few beats after the degree value PRP exceeds the value corresponding to the break point F
After that, the break point F is about several beats later
For example, t in FIG._Two Time point several beats before the time point
t₁ It is to determine immediately that it has occurred at the time
You. For example, the turning point determining means 88 may include an initial load increasing means.
Work intensity value calculating means in a section where the load is increased by the load 84
Effort intensity value PRP sequentially calculated by 82_nRegression
A line KL is obtained, and the regression line KL is determined as a center.
Exceeds a predetermined judgment reference range, for example, a range of + 10%.
Work intensity value PRP _nIs a predetermined number of times
The break point F is determined based on the output. For example, in FIG.
Two-dimensional Cartesian coordinates consisting of time axis and effort intensity axis
And two or more consecutive
Work intensity value PRP_{m + 1} , PRP_{m + 2}Is detected
Is the exertion intensity value PRP_{m + 1} Or one before it
Work intensity value PRP_mOccurrence time t_F2Or t_F1Break point F
Is determined to have occurred, and the occurrence time t_F2Or t_F1To
F on the regression line KL_Two Or F₁ Is the break point F
Is determined.

Exercise load adjusting means 90 provides an exercise intensity value PRP of a living body accompanying an increase in the load in an initial load increase section in which the load is increased by initial load increasing means 84.
When the turning point F of the increase is determined by the turning point determining means 88, the increase in the load by the initial load increasing means 84 is stopped, and immediately thereafter, the determination is made by the target exertion intensity value determining means 86. Target effort intensity value PRP _M
The load on the ergometer 6 is adjusted so that the actual exertion intensity PRP follows. The section between t _{2 and} t _{3 in} FIG. 5 shows this state. The broken line in FIG. 5 indicates the direction in which the exertion intensity value PRP increases when the load of the initial load raising means 84 is not stopped and the load is raised continuously.

The exercise load end determination means 92 exercises the living body.
Elapsed time T since load was applied _ELBut for example exercise
A preset format for exercising the living body according to the prescription
Disconnection reference time T_STo the living body based on reaching
End of the exercise load to be applied is determined. End of exercise load
The processing means 94 is generated by the exercise load end determination means 92.
When it is determined that the exercise load has been applied to the body,
Reduce the exercise load on the living body with the preset reduction procedure
I do. This mitigation procedure places loads in a preset order.
Reduced step by step or preset reduction rate
Continuously reduced in degrees. T in FIG._Three Or t_Four section
Indicates this state.

FIG. 7 is a flowchart for explaining the main control operation of the electronic control unit 28. In step S1 in the figure (hereinafter, the steps are omitted), it is determined whether or not the exercise load device has been activated by operating an operation button (not shown). If the determination in S1 is denied, the process is put on standby.
In the state corresponding to the initial load increasing means 84, since the living body has started exercising using
₀ to as shown in the initial load rising section of t _2, exercise is raised at a predetermined speed.

Next, at S3, the pulse rate PR of the living body is
And after the estimated blood pressure EBP _SYS is loaded exertion intensity values PRP is calculated in S4 corresponding to the exertion intensity value calculating unit 82. The exertion intensity value PRP is used as an index of myocardial load, and correlates with oxygen consumption. Then, the turning point determining means 88
In S5 corresponding to the above, it is determined whether or not a break point F of the exertion intensity value PRP that is increased in the initial load increasing section has occurred in the two-dimensional orthogonal coordinates including the time axis and the exertion intensity value axis.

Initially, the determination at S5 is negative, so that S2 and subsequent steps are repeatedly executed. However, FIG.
As shown in the t ₂ time points, the occurrence of folding point F is determined in S5, simultaneously with execution of S2 corresponding to the initial load lifting means 84 is stopped, S6 to S8 is performed. That is, at S6 corresponding to the target exertion intensity value determining means 86, the time point when the break point F occurs, that is, t in FIG.
_The predetermined value ΔP is larger than the exertion intensity value PRP _F corresponding to _one time point.
A target exertion intensity value PRP _M lower by RP is determined. Next, in S7, the count of the counter CT _EL for counting the elapsed time T _EL is allowed. Then, in S8 corresponding to the exercise load adjusting means 90, for example, the exercise load adjustment routine shown in FIG. 8 is executed so that the target exercise intensity value PRP _M matches the actual exercise intensity value PRP. The load on the ergometer 6 is adjusted.
T ₂ time in FIG. 5 shows this state.

At SB1 and SB2 in FIG. 8, the estimated blood pressure value EBP _SYS and the pulse rate PR determined for each beat are read, and the SB corresponding to the exertion intensity value calculating means 82 is read.
3, the estimated blood pressure value EBP _SYS and the pulse rate PR
Is used to calculate the actual exertion intensity value PRP. Next, at SB4, the target exertion intensity value PRP _M determined at S6 is read. And SB5 to S5
At B8, the electromagnetic brake 68 of the ergometer 6 is controlled such that the actual exertion intensity value PRP matches the target exertion intensity value PRP _M. That is, at SB5, it is determined whether or not the actual exertion intensity value PRP exceeds the target exertion intensity value PRP _M. If the determination in SB5 is denied, the actual work intensity value PRP has not yet reached the target work intensity value PRP _M, and therefore, in SB6, the work (consumed kinetic energy ) W is increased by adding a predetermined change value ΔW to W. If the determination in SB5 is affirmative, the actual exertion intensity value PRP is changed to the target exercise intensity value PR.
Since exceeds the P _M, at SB7, it is reduced by subtracting the predetermined change value ΔW from work W of the electromagnetic brake 68 in the preceding cycle. And
In SB8, the exciting current of the exciting coil, that is, the braking torque of the electromagnetic brake 68 is adjusted so that the work W changed as described above is performed by the electromagnetic brake 68.

Subsequently, in SB9, an abnormality of the living body is determined. For example, it is determined whether or not the pulse rate PR calculated by the pulse rate calculation means 80 has exceeded a predetermined reference value. If the determination at SB9 is affirmative,
In SB10, an abnormal display indicating an abnormality of the living body
6 and the work W of the electromagnetic brake 68, that is, the rotational resistance of the ergometer 6, is made zero in SB11, and this routine and the routine of FIG. 7 are terminated. However, if the determination at SB9 is negative, this routine is terminated, and S9 and subsequent steps in FIG. 7 are executed.

Returning to FIG. 7, in S9 corresponding to the exercise load end determination means 92, the elapsed time _TEL reaches a predetermined reference time T _S for exercising the living body in accordance with, for example, exercise prescription. It is determined whether or not it has been done.
Since initially the determination in S9 is negative, then the count contents T _EL is updated by "1" to the count contents T _EL of the counter CT _EL in S10 is added, the S8
The following is repeatedly performed. However, if the determination in S9 is affirmative, in S11 corresponding to the exercise load end processing means 94, exercise load end processing, that is, cooling down is executed, and the load applied to the living body is reduced by a predetermined reduction procedure. Is done. The section from t _{3 to} t _{4 in} FIG. 5 shows this state.

As described above, according to this embodiment, as the load applied to the living body is increased in the initial section of the exercise period of the living body by the initial load increasing means 84 (S2), the exercise intensity value calculation is performed. When the turning point F of the increase of the exertion intensity value PRP calculated by the means 82 occurs, the target exertion intensity value PRP _M is determined based on the turning point F by the target exertion intensity value determining means 86 (S6). Then, the exercise load adjusting means 90 (S8) stops the increase in the load by the initial load increasing means 84, and reduces the load on the ergometer 6 so that the actual exertion intensity PRP follows the target exercise intensity value PRP _M. Since the adjustment is performed, each time the movement of the living body is performed, the optimal target load is determined without imposing a great burden on the living body, and the load of the exercise load device is controlled so that the target load is applied. In addition, since a load is not applied to the individual living body to the maximum as described above, the living body does not exercise pain, and it is possible to perform exercise therapy on the living body having a disease, and the living body exercises. An optimal load suitable for the physical condition of the day, that is, an initial stage of anaerobic exercise or a maximum intensity of aerobic exercise is given.

The control device of the exercise load device according to the present embodiment includes a turning point judging means for judging a turning point F of an increase in the exertion intensity value PRP with an increase in the load by the initial load increasing means 84 (S2). 88 (S5), and the target exertion intensity value determining means 86 (S6) subtracts the preset correction value ΔPRP from the exertion intensity value PRP _F corresponding to the break point F, thereby obtaining the break point F. Corresponding effort intensity value PRP _F
A lower target exertion intensity value PRP _M is determined. In addition, the preset correction value ΔPRP may be a preset constant value, but is preferably determined based on the age, sex, exercise ability, etc. of the living body from a predetermined relationship. Value. Therefore, the target exertion intensity value PRP _M is a value PR corresponding to the turning point F of the increase in the exercise intensity value.
Since the target effort intensity value is set to a value lower than P _{F, the} actual effort intensity value is reduced due to a delay in the reaction of the living body, as compared with the case where the value PRP _F corresponding to the break point F is set as the target effort intensity value PRP _M. The higher is compensated and the optimal target exertion intensity value is determined.

Further, the control device for the exercise load device of the present embodiment.
The load is increased by the initial load increasing means 84 (S2).
To determine the turning point F of the increase in the exertion intensity value PRP due to
Point determination means 88 (S5) is included to determine the target exertion intensity value
Means 86 (S6) starts after the exercise load is applied to the living body.
When there is a delay until the blood pressure value or pulse rate of the living body changes
Between the value ΔPRP corresponding to the break point F and the effort
Degree value PRP_FFrom the point F
Corresponding effort intensity value PRP_FTarget exertion intensity value P lower than
RP_MIs determined. In addition, the delay time
The corresponding value ΔPRP is preferably the initial load raising means 84.
Blood pressure of the living body after the initial load is applied to the living body
Based on the actual lag time until the value or pulse rate changes
Is determined. Therefore, the target exertion intensity value PRP_MBut
Value PRP corresponding to break point F of increase in exertion intensity value_Fthan
Since it is set to a low value, the value PR corresponding to the break point F
P _FIs the target exercise intensity value PRP_MAs compared to
Target effort intensity value is higher than actual value due to delay of biological response
And the optimal target effort intensity value is determined.
It is.

Further, the control device of the exercise load device according to the present embodiment has an elapsed time _TEL after the exercise load is applied to the living body.
Is determined by the exercise load end determining means 92 (S9), which determines the end of the application of the exercise load to the living body based on the arrival of a predetermined reference time T _S. When it is determined that the application of the exercise load to the living body has ended, the exercise load termination processing means 94 (S11) for reducing the exercise load on the living body by a preset reduction procedure is included. Therefore, when the exercise load end determination means 92 determines that the application of the exercise load to the living body has ended, the exercise load end processing means 94
As a result, the exercise load on the living body is automatically reduced by a preset reduction procedure, so that inconvenience due to insufficient cooling down is prevented from occurring in the living body.

Further, the initial load raising means 84 of the present embodiment.
Since the load on the living body is continuously increased at a predetermined speed, the load applied to the living body in the initial section of the exercise period of the living body is increased with time at a preset speed. Therefore, there is an advantage that there is no stepwise increase in the exertion intensity corresponding to the stepwise increase in the load, and the determination of a break point is easy as compared with the case where the stepwise increase is performed.

While the embodiment of the present invention has been described with reference to the drawings, the present invention can be applied to other embodiments.

For example, in the above-described embodiment, the initial load increasing means 84 does not continuously increase the load on the living body at a predetermined speed, but increases the load at a predetermined increase width and then changes the value for a predetermined period of time. The temperature may be increased stepwise while repeating the maintenance. In this way, since the break point is determined when the load on the living body is constant, there is an advantage that the delay in exertion intensity due to the reaction of the living body is reduced.

In the above embodiment, the pulse rate P
R and the estimated blood pressure value EBP are determined for each beat, and the exertion intensity value PRP is calculated for each beat. However, the exercise intensity value PRP is not necessarily calculated for each beat. It may be calculated.

[0048] In addition, the elapsed time T _EL of the foregoing examples, was the elapsed time from the time t ₂ the breakpoint F is determined,
A time elapsed from the time t ₀ the initial load rising section is started may be. In short, it only needs to be the elapsed time after the exercise load is applied to the living body.

Although the pressure pulse wave blood pressure correspondence in the above embodiment is of a primary type, if the pressure pulse wave sensor 38 is not pressed so as to keep the wall of the artery flat, a secondary or higher May be used.

The reference blood pressure measuring means 72 determines the reference blood pressure value based on the change in the cuff pulse wave in the process of gradually lowering the cuff pressure. The reference blood pressure value may be determined based on the change in the cuff pulse wave. Further, the reference blood pressure measuring means 72 determines the blood pressure value based on the change state of the magnitude of the pressure pulse wave that changes according to the compression pressure of the cuff 10 according to the so-called oscillometric method. The blood pressure value of the living body may be measured based on the occurrence and disappearance of Korotkoff sounds generated from the ten compression parts.

In the above-described embodiment, the ergometer 6 is used as the exercise load device. Instead, for example, a treadmill 100 as shown in FIG. 9 may be used. In this treadmill 100, an endless belt 104 provided on a base 102 is driven to rotate by an electric motor 106.
Exercise load is given by running the living body located above. This electric motor 106
For example, the load of the running motion of the living body can be changed by changing its rotation speed in accordance with a command from the electronic control unit 28.

In the above embodiment, the exercise intensity value PRP is used as a value indicating the exercise load applied to the living body, and the target exercise intensity value determined by the exercise load adjusting means 90 during the initial load increase period. Although the braking force of the electromagnetic brake 68 of the ergometer 6 so that the actual exertion intensity values PRP and PRP _M match (load) were allowed to adjust, pulse rate as a value indicating the exercise load that is canceller load in vivo PR or blood pressure value (the systolic blood pressure value BP _SYS is used, and the target pulse rate PR _M or the target blood pressure value B PM determined by the exercise load adjusting means 90 during the initial load rise period and the actual pulse rate P _M
R or estimated blood pressure EBP (estimated systolic blood pressure EB
The ergometer 6 may be adjusted so that P.sub.SYS) coincides with _P.sub.SYS ). In this case, the target pulse rate PR
_M or the target blood pressure value BP _M is, for example, a value at the time of occurrence of a break point of the pulse rate PR or the estimated blood pressure value EBP that increases during the above initial load rising period, or a value at a time when a predetermined ratio increases with respect to the initial value (at rest). Used.

In addition, the present invention can be variously modified without departing from the gist thereof.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a control device of an exercise load device according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating a pressure pulse wave sensor and a pressing force control device of the embodiment of FIG. 1 in detail.

FIG. 3 is a functional block diagram illustrating a main part of a control function of the electronic control device in the embodiment of FIG. 1;

FIG. 4 is a diagram exemplifying a correspondence determined by a pressure pulse wave blood pressure correspondence determination unit in FIG. 3;

FIG. 5 is a time chart showing an exercise load controlled by the electronic control unit in the embodiment of FIG.

FIG. 6 is a diagram illustrating a method of determining a break point by a break point determining unit in FIG. 3;

FIG. 7 is a flowchart illustrating a main part of a control operation of the electronic control unit in the embodiment of FIG. 1;

FIG. 8 is a flowchart illustrating the exercise load feedback control in step S8 of FIG. 7 in detail.

FIG. 9 is a diagram illustrating a treadmill which is an exercise load device according to another embodiment of the present invention.

[Description of sign]

6: Ergometer (exercise load device) 82: Exercise intensity value calculation means (exercise load value detection means) 84: Initial load increase means 86: Target exercise intensity value determination means (target exercise load value determination means) 88: Breakpoint determination means 90: Exercise load adjustment means 92: Exercise load end determination means 94: Exercise load end processing means 100: Treadmill (exercise load device)

Claims (7)

[Claims] 1. An exercise load device that is mechanically actuated in connection with the movement of a living body, wherein the exercise load is determined such that the optimum load of the living body is determined and the optimum load is applied during the movement of the living body. A control device for adjusting a load of a device, comprising: an initial load increasing unit configured to increase a load applied to the living body in an initial section of the exercise period; and an exercise load detecting an exercise load value loaded on the living body. Value detection means, target exercise load value determination means for determining a target exercise load value to be given to the living body with an increase in load by the initial load increase means, and a target exercise load value determined by the target exercise load value determination means. When determined, after the load increase by the initial load increasing means is stopped, the load of the exercise load device is adjusted so that the actual exercise load value follows the target exercise load value. Control device for exercise apparatus characterized by a load adjustment means includes. 2. The exercise load value detection means includes an exercise intensity value calculation means for calculating an exercise intensity value which is a product of a blood pressure value of a living body and a pulse rate. With the increase of the load by the load increasing unit, the target exertion intensity determining unit determines a target exertion intensity value based on a turning point of the increase of the exertion intensity value. When the target exertion intensity value is determined by the value determining means, the increase in the load by the initial load increasing means is stopped, and the load of the exercise load device is adjusted so that the actual exertion intensity follows the target exertion intensity value. The exercise load control device according to claim 1, further comprising exercise load adjusting means for performing exercise load adjustment. 3. The method according to claim 1, further comprising a turning point determining means for determining a turning point of the increase in the exertion intensity value in association with an increase in the load by the initial load increasing means, wherein the target exertion intensity value determining means includes a preset correction value. 3. The exercise load control device according to claim 2, wherein a target exertion intensity value lower than the exercise intensity value corresponding to the break point is determined by subtracting the value from the exercise intensity value corresponding to the break point. 4. The method according to claim 1, further comprising a turning point judging means for judging a turning point of the increase in the exertion intensity value accompanying an increase in the load by the initial load increasing means, wherein the target exertion intensity value determining means includes an exercise load on the living body. Is subtracted from the exertion intensity value corresponding to the turning point, by subtracting the value corresponding to the delay time from the change in the blood pressure value or the pulse rate of the living body to the working intensity value corresponding to the turning point. 3. The exercise load control apparatus according to claim 2, wherein the control section determines a low target exertion intensity value. 5. Exercise load end determining means for judging the end of the application of the exercise load to the living body based on the fact that the elapsed time since the exercise load was applied to the living body has reached a predetermined reference time. And exercise load termination processing means for reducing the exercise load on the living body by a preset lightening procedure when the exercise load termination determination means determines the end of the application of the exercise load to the living body. A control device for an exercise load device according to any one of 2 to 4. 6. The exercise load control apparatus according to claim 2, wherein the initial load raising means continuously increases the load on the living body at a predetermined speed. 7. The initial load increasing means increases the load on the living body stepwise while increasing the load on the living body by a predetermined increase width and then maintaining the value for a predetermined period of time. 5. The control device for an exercise load device according to any one of the above items 5.