JPH06277311A - Exercise device provided with automatic load adjusting function - Google Patents

Abstract

PURPOSE:To provide an exercise device provided with an automatic load adjusting function without a fear of causing a heart stroke or the like in a living body due to excessive load application. CONSTITUTION:When abnormality of a living body is judged by a step S9 corresponding to an abnormality judging means on the basis that the pulse rate or a blood pressure value or an actual PRP found by a step S3 exceeds a judgement reference value determined in advance by a setting instrument, the abnormality content is displayed on a display and a step S11 corresponding to an exercise load cancelling means is conducted to nullify an excitation current having been fed to an excitation coil of electromagnetic brake, thus enhancing accuracy of load applied to the living body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exercise device for exerting a load on a living body by exercising the living body.

[0002]

2. Description of the Related Art There is known an exercise device for exerting a predetermined load by exercising a living body when measuring or exercising a moving function of the living body. For example, an ergometer of the type that drives a rotary pedal, a treadmill of the type that runs on a rotating endless belt, and the like. In such an exercise device, usually, a target value of the pulse rate or blood pressure value that is increased by a predetermined ratio with respect to the rest time is set, and a load is applied so that the actual pulse rate or blood pressure value matches the target value. Is being adjusted.

[0003]

However, in the above-mentioned conventional exercise apparatus, the load is uniformly applied so that the actual pulse rate and blood pressure value are maintained at the target values, but the elderly person and the cardiovascular disease are involved. There is a case where a living body originally having weak cardiac function such as a person is overloaded, and continuous application of such a load may cause a heart attack or the like. In particular, even in the case of an exercise facility, there is a great possibility that no expert supervision will be performed, or that the exercise device will be used personally at home.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an exercise apparatus which is free from the risk of causing a heart attack or the like in a living body when an excessive load is applied. Especially.

[0005]

The gist of the present invention for achieving the above object is to provide an exercise load adjusting means capable of changing a load applied to a living body during exercise, and the exercise load adjusting means. An exercise device comprising an exercise load control means for giving a preset exercise load to the living body by controlling, (a) an abnormality of the living body during the exercise, at least the heart rate and the blood pressure value of the living body. If one of the abnormality determining means determines based on the fact that one exceeds a predetermined determination reference value, (b) the abnormality determining means determines the abnormality of the living body during exercise, load the living body. And an exercise load eliminating means for making the applied load zero by the exercise load adjusting means.

[0006]

In this way, when the abnormality determining means determines that an abnormality has occurred in the living body during exercise, the exercise load eliminating means automatically changes the load applied to the living body. Since it is set to zero, the risk of causing a heart attack or the like due to an excessive load applied to a living body having a weak cardiac function is suitably eliminated.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

In FIG. 1, reference numeral 10 denotes a rotary pedal type ergometer which is an example of an exercise machine.
An eddy current type electromagnetic brake 14 that rotates together with the motor 2 is provided. The electromagnetic brake 14 includes a rotor and an exciting coil that adjusts the strength of a magnetic field acting on the rotor, and is consumed by the electromagnetic brake 14 by the exciting current supplied from the controller 16 to the exciting coil. Kinetic energy, that is, the external load (external exercise intensity of the living body) applied to the living body that is moving by rotating the rotary pedal 12 is adjusted. In this embodiment,
The electromagnetic brake 14 corresponds to exercise load adjusting means capable of changing the load applied to the living body during exercise.

The cuff 18 is wound around a part of a living body, for example, the upper arm, and a blood pressure measuring device 2 is provided via a tube 20.
It is connected to 2 and presses the air as it is pumped from the blood pressure measuring device 22. The cuff 18 is provided with a microphone 24 for detecting a blood flow sound, for example, a so-called Korotkoff sound. From the microphone 24, a signal representing the blood flow sound is supplied to the blood pressure measurement device 22. The blood pressure measuring device 22 that constitutes the blood pressure measuring means together with the cuff 18 is constituted by a so-called microcomputer, and sequentially executes a predetermined series of measurement steps to obtain the blood pressure value of the living body during exercise in the ergometer 10. The blood pressure value is automatically measured, the blood pressure value is transmitted to the controller 16, and such blood pressure measurement is repeated at regular intervals. In the above series of measurement steps, for example, the pressure of the cuff 18 is raised until the arteries are sufficiently hemostasis, and then the blood pressure is gradually lowered. The pressure of the cuff 18 is determined as the systolic blood pressure value and the diastolic blood pressure value, respectively. Further, the blood pressure measurement device 22 counts the pressure vibration of the cuff 18 that occurs in synchronization with the heartbeat, detects the pulse rate, and transmits the pulse rate to the controller 16.

In the setting device 26, a target value representing the exertion intensity (internal load) to be loaded on the living body, exercise time, and reference values (maximum pulse rate, maximum blood pressure value, which serve as a reference for judging abnormality of the living body, The maximum PRP) and the like are set and input. The target value is the maximum or average blood pressure value or PRP (Pressure Rate) determined based on this value.
Product: An amount such as the product of blood pressure value and heart rate) is used. These amounts are those obtained by increasing the value during non-exercise so as to obtain a desired exertion intensity determined according to the actual exercise ability determined according to the age, sex, weight, exercise history of the living body and the goal of exercise. . The exertion intensity of the living body and the one-to-one correspondence between the oxygen consumption of the myocardium are determined by the heart rate, the myocardial contraction force and the tension of the myocardial wall, and the tension of the myocardial wall is represented by the end ventricular diastolic volume and the ventricular systolic blood pressure. So the maximum blood pressure value,
Alternatively, PRP reflects the exertion intensity of the living body.

The controller 16 is constituted by a so-called microcomputer, and by repeatedly executing a series of control steps, the exertion intensity of the living body matches the target value set by the setting device 26. Then, the braking torque of the electromagnetic brake 14 in the ergometer 10 is adjusted. Further, when an abnormality occurs in the living body, the content of the abnormality is displayed on the display unit 28. The display 28 is provided with an LED for notifying the abnormality content, an optical display device such as an LCD, a voice display device such as a buzzer and a voice synthesizer, or a printer device for printing and displaying the abnormality message.

The operation of the controller 16 will be described below with reference to the flowchart of FIG.

First, by executing the initial processing of step S1, a timer (not shown) is cleared and the pulse rate is read. When an electrocardiograph is provided, this pulse rate may be obtained from an electrocardiographic signal from an electrode attached to the living body.

In step S2, it is judged whether or not the blood pressure value has been transmitted from the blood pressure measuring device 22, and if the blood pressure value has not been transmitted, steps S8 and below, which will be described later, are executed, but the blood pressure value has been transmitted. If so, step S3
Is executed to determine the actual PRP of the living body during exercise. This PRP is calculated by calculating the product of the pulse rate read in step S1 and the blood pressure value transmitted from the blood pressure measurement device 22.

In step S4, the target value (PRP) set by the setting device 26 is read, and in the following steps S5 to S8 corresponding to the exercise load control means, the exercise load is applied to the living body so as to match the target value. Given.
First, in step S5, the actual PRP obtained in step S3 is compared with the target value. If the actual PRP is smaller than the target value, step S6 is executed and ΔW is added to the work (consumed kinetic energy) W of the electromagnetic brake 14 in the previous cycle to increase the actual PRP. When it is larger than the target value, step S7 is executed to reduce ΔW from the work W of the electromagnetic brake 14 in the previous cycle. Then, in step S8, step S6 or S
An exciting current is passed through the exciting coil so that the work W determined in 7 is performed in the electromagnetic brake 14. That is, in the braking routine, the electromagnetic brake 1
The rotational speed of No. 4 is read, and the exciting current is determined according to the rotational speed based on the relationship obtained in advance and is supplied to the exciting coil of the electromagnetic brake 14. The excitation current corresponds to the braking torque, but the energy consumption changes when the rotation speed changes even with the same braking torque, and the braking torque changes with the rotation speed even with the same excitation current, so the excitation current is determined in consideration of the rotation speed. Be done.

Subsequently, in step S9 corresponding to the abnormality determining means, it is determined whether or not an abnormality has occurred in the living body. For example, if the pulse rate or blood pressure value read in step S1 or the actual PRP obtained in step S3 exceeds a maximum value set by the presetter 26 (for example, a value of 75 to 100% increase during non-exercise). It is judged to be an abnormality of the living body. When it is determined that the body is abnormal, step S10 is executed and the content of the abnormality is displayed on the display unit 28.
Is displayed and the step S11 corresponding to the exercise load elimination means is executed, and the exciting current supplied to the exciting coil of the electromagnetic brake 14 is set to zero, and no load is applied.

On the other hand, if it is determined in step S9 that there is no abnormality in the living body, step S12 is executed to determine whether the time set by the timer has expired.
If the set time of the timer has not expired, step S2 and the following steps are executed again, but if it has expired, step S11 is executed so that there is no load, and the exercise load loaded on the living body is It is resolved automatically.

As described above, according to this embodiment, the abnormality of the living body is judged based on the pulse rate, the blood pressure value, or the actual PRP exceeding the judgment reference value set by the setting device 26 in advance. Since the abnormality content is displayed on the display 28 and the exciting current supplied to the exciting coil of the electromagnetic brake 14 is set to zero and no load is applied, an excessive load is applied especially to a living body having a weak cardiac function. The possibility of causing a heart attack or the like due to the application of the is effectively eliminated.

Further, according to this embodiment, the ergometer 1 is
Since the electromagnetic brake 14 is controlled so as to consume a predetermined amount of energy regardless of the rotational speed of 0, there is an advantage that it is not affected by the rotational speed of the measurement subject.

Although one embodiment of the present invention has been described above with reference to the drawings, the present invention can be applied to other modes.

For example, a generator may be provided instead of the electromagnetic brake 14 of the ergometer 10. In such a case, the exercise load is changed by adjusting the output power of the generator.

A treadmill may be used instead of the ergometer 10. In such cases,
The exercise load can be changed by changing the belt traveling speed and / or the inclination angle of the treadmill.

The blood pressure measuring device 22 described above may employ a so-called oscillometric method for obtaining a blood pressure value based on a change in the magnitude of pressure vibration generated in the cuff 18 in synchronization with the heartbeat.

Further, the blood pressure measuring device 22 and the controller 16 of the above-described embodiment can be configured by a common microcomputer.

Further, the above-mentioned setter 26 may be provided with a preset programmable function, and may change the target value along with the passage of time along a plurality of steps of a stepwise curve, an inclined straight line, or a curve.

The above description is merely one embodiment of the present invention, and the present invention can be modified in various ways without departing from the spirit of the invention.

[Brief description of drawings]

FIG. 1 is a block diagram illustrating a configuration of an exemplary embodiment of the present invention.

FIG. 2 is a flow chart illustrating the operation of the embodiment of FIG.

[Explanation of symbols]

 14: Electromagnetic brake (exercise load adjustment means) Steps S5 to S8: Exercise load control means Step S9: Abnormality determination means Step S11: Exercise load elimination means

Claims (1)

[Claims] 1. An exercise load adjusting means capable of changing a load applied to a living body during exercise, and an exercise load controlling means for giving a preset exercise load to the living body by controlling the exercise load adjusting means. An exercise device comprising: an abnormality determining means for determining abnormality of the living body during the exercise based on that at least one of the heart rate and the blood pressure value of the living body exceeds a predetermined determination reference value. And, when the abnormality determining means determines that the living body is exercising during exercise, the exercise load adjusting means reduces the load on the living body to zero by the exercise load adjusting means. An exercise device with a characteristic automatic load adjustment function.