JPH05293089A - Degree of kinetic load measuring apparatus by heart rate - Google Patents

Abstract

PURPOSE:To provide a degree of kinetic load measuring apparatus which enables the displaying of how intense exercise is carried on as for the maximum heart rate plainly. CONSTITUTION:This apparatus has an input section 6 to input information on a subject such as age and a heart rate detecting means to detect a heart rate of the subject under exercise. A CPU calculates the maximum heart rate of the subject based on the information on the subject from the input section 6 while it determines the decree of a kinetic load applied on the subject under exercise at least from the maximum heart rate and the heart rate from the heart rate detection means and a display section 7 displays the degree of the kinetic load determined with the CPU in a bar graph 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heartbeat for measuring the heart rate and displaying the degree of exercise load in real time when performing physical training or exercise prescription using an exercise load device such as a treadmill. The present invention relates to a device for measuring an exercise load by a number.

[0002]

2. Description of the Related Art It is known that heart rate increases almost in proportion to exercise intensity, and an instructor who prescribes an appropriate exercise to a subject calculates a maximum heart rate based on the age of the subject (sometimes gender). , The exercise experience and other factors are included in the calculation), and the heart rate of safe exercise intensity and the optimal heart rate for training are calculated from the percentage of the maximum heart rate, and are used for exercise evaluation and instruction. From the heart rate of the subject during exercise, for example, exercise with a heart rate of 85% or more of the maximum heart rate is dangerous, and exercise of about 75% of the maximum heart rate is appropriate. Therefore, in a conventional exercise load device such as a treadmill, it is determined whether or not a subject who performs physical fitness training, physical fitness measurement, rehabilitation or exercise prescription exercises within an appropriate exercise load (exercise intensity) range. In order to be able to grasp it, the heart rate of the subject during exercise can be measured and displayed.

[0003]

As described above, in the conventional exercise load device, the heart rate of the subject who is exercising is displayed numerically, and the instructor or the subject who is exercising sees the display of the heart rate. While being in a safe heart rate range,
Or I was checking if it was in the optimal heart rate range for training. However, the display of the heart rate on the exercise load device is a discrete display for each one, and the safe heart rate that serves as an index and the appropriate heart rate for training are also discrete values, so during actual exercise There was a problem that even if only the heart rate was displayed, it was difficult to understand the relative relationship to the maximum heart rate.

The present invention has been proposed in order to solve the problems of the prior art, and it is possible to display in an easy-to-understand manner the intensity of exercise with respect to the maximum heart rate. An object is to provide a load degree measuring device.

[0005]

To achieve this object, an exercise load measuring apparatus according to the present invention comprises an input means for inputting subject information such as age, and a heart rate for detecting the heart rate of a subject during exercise. Detecting means, calculating the maximum heart rate of the subject based on the subject information input from the input means, at least the exercise load applied to the subject during exercise from the maximum heart rate and the heart rate from the heart rate detecting means The calculation unit for calculating the degree of exercise and the display unit for displaying the degree of exercise load obtained by the arithmetic unit in a bar graph are provided. Preferably, the degree of exercise load can be displayed in different colors on the bar graph according to the degree of the degree of exercise load measured. It is composed.

[0006]

According to the above-mentioned configuration, the subject information is input,
By only measuring the heart rate from the subject, the degree of exercise load applied to the subject during exercise can be displayed by a bar graph without performing special calculation by a technique.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the exercise load measuring device according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of this exercise load measuring device. In this figure, the electrocardiographic electrodes 1 and 2 are attached to a subject who is exercising with an exercise load device such as a treadmill, and the electrocardiogram of the subject is derived by the electrocardiographic electrodes 1 and 2.
The electrocardiogram signal detected from the subject who is exercising is amplified by the amplifier 3 and then sent to the heartbeat detecting section 4. In the heartbeat detecting section 4, after the QRS wave is detected from the electrocardiogram signal, the waveform is shaped and a heartbeat synchronizing signal synchronized with the R point is generated. This heartbeat synchronization signal is sent to the central processing unit 5 (hereinafter referred to as CPU 5), and the heartbeat rate of the subject is measured. Here, the electrocardiogram electrode 1,
2, the amplifier 3, the heartbeat detecting section 4, and the CPU 5 constitute a heartbeat rate detecting means. On the other hand, information such as the age of the subject can be input to the CPU 5 from the subject data input unit 6 including a numeric keypad and the like. When the subject information is input, the CPU 5, which is a calculation unit, calculates the maximum heart rate of the subject, and further calculates the percentage of the detected heart rate of the subject with respect to the maximum heart rate to calculate the exercise load. A bar graph is displayed on the degree display unit 7. Also,
The heart rate detected by the subject is numerically displayed on the heart rate display unit 8. The data of the measured exercise load are also sent to the speed / tilt control circuit 9 of the treadmill.

FIG. 2 shows a display panel 10 provided with an exercise load level display section 7, a heart rate display section 8 and the like. The display panel 10 is attached to the front part of the treadmill 11 as shown in FIG. In the exercise load level display unit 7 of this embodiment, the measured exercise load level can be displayed as a bar graph 12 for every 5%, and depending on the degree of the exercise load level, 75% or less is green, 80% is yellow, and there is a risk area. 85
% Or more can be displayed in different colors, such as red, so that areas where exercise is effective and areas where exercise is too strong and dangerous can be recognized at a glance. In addition, the heart mark 13 provided on the upper part of the heartbeat display section 8
Blinks in synchronization with the heartbeat of the subject who is exercising. An input unit 6 for subject data is provided below the display panel 10. FIG. 4 shows an exercise load level display section 7 of another embodiment, which is 55% to 90% in this example.
Bar graph with continuous curve up to 100% exercise load 1
4 can be displayed in different colors. In addition, in the box 15 in which the display panel 10 is provided, a board on which the heartbeat detecting unit 4, the CPU 5, and the like are mounted is incorporated.

Next, the operation of the exercise load measuring device constructed as described above will be described with reference to the flow chart of FIG. First, subject information is input from the input unit 6 provided on the panel 10 (step S1). When the subject information is input, the CPU 5 calculates the maximum heart rate (HRmax) of the subject by, for example, a calculation formula of (220-age) (step S2). This calculation formula is based on statistically processed data. When the heartbeat synchronizing signal is input to the CPU 5 from the heartbeat detecting unit 4, the RR interval corresponding to the time interval between QRS waves is measured, and then the instantaneous heart rate is calculated (steps S3 to S4). This instantaneous heart rate is R
When the −R interval is t1 seconds, it can be calculated by a calculation formula of 60 seconds / t1 seconds. Then, the CPU 5 calculates the average of the instantaneous heartbeats for the heartbeats of, for example, 7 beats, so that the smoothing process is performed and the heartbeat of the subject is measured (step S5). The obtained heart rate is displayed on the heart rate display portion 8 of the display panel 10 (step S6). Subsequently, the heart rate detected from the subject is divided by the previously obtained maximum heart rate to calculate what percentage the heart rate is relative to the maximum heart rate (step S
7). This calculated value (% HRmax) corresponds to the exercise intensity received by the subject during exercise, that is, the degree of exercise load applied to the subject by an exercise load device such as a treadmill, and this calculation result is displayed on the display panel 10. A bar graph is displayed on the exercise load display unit 7 (step S8). Further, the measured exercise load is sent to the speed / tilt control circuit 9 when the exercise load device is a treadmill, and the exercise load is 80% of the maximum heart rate which is a dangerous region for the subject.
If it exceeds, the control for making the inclination of the treadmill 11 gentle or slowing the speed is automatically performed (step S9). This is because if you suddenly stop the exercise during a sudden exercise, you will lose your heartbeat while keeping the blood vessels open, which may cause the subject to faint or fall. Measures are taken to cause it. It should be noted that the measured exercise load level may be sent to the control circuit 9 of the exercise load device so that control can be automatically performed so that the exercise can always be continued in the region of 60 to 70% of the maximum heart rate. ..

In the above-described embodiment, the exercise load level is calculated as (heart rate / maximum heart rate) × 100, but the exercise load level may be calculated by the CPU 5 by performing the following calculation. .. Let the subject's resting heart rate be a, the maximum heart rate during maximum exercise be b, and the resting exercise intensity to be 0%, and the maximum exercise intensity to be 100%. For example, the heart rate y corresponding to a certain exercise intensity x is given by the following equation. y = {(b−a) / 100} · x + a (1) If this equation (1) is solved for x, x = (y−a) × {1 / (b−a)} (2) Become. When the resting heart rate a is input as the subject data, and the maximum heart rate b is calculated and then this equation (2) is calculated by the CPU 5, the exercise load degree at a certain heart rate y is obtained. be able to. The maximum heart rate b can also be calculated by the following equation, where u is the age of the subject. b = 210-0.8u (3) According to this formula (3), when the subject is 25 years old, the maximum heart rate of the subject is 190 beats per minute.

In the above-described embodiment, the calculated maximum heart rate may be simultaneously displayed on the display panel 10.

[0012]

As described above, according to the present invention, the degree of exercise load received by an exercise subject by an exercise load device is measured by measuring the heart rate without performing any special calculation. Since it can be automatically displayed in real time, whether you are exercising in a safe area,
Alternatively, there is an advantage that it is possible to grasp at a glance whether or not exercise is being performed at an exercise intensity suitable for training. In addition, by displaying the exercise load degree in a bar graph, it becomes easier to understand the exercise state as compared with numerical display, meter display, or lamp display. Furthermore, by displaying the dangerous areas in different colors, it is possible for a subject who does not have any special knowledge to easily recognize whether or not the current exercise is too strong and is in the dangerous area. Therefore,
By using the exercise load measuring device according to the present invention,
Effective and safe training can be performed easily, and its effectiveness is extremely large when performing rehabilitation, physical training, exercise prescription, etc.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of an exercise load measuring apparatus according to the present invention.

FIG. 2 is a plan view schematically showing a display panel of the exercise load measuring device.

FIG. 3 is a perspective view schematically showing a treadmill provided with the exercise load measuring device.

FIG. 4 is a plan view schematically showing a display panel of another embodiment.

FIG. 5 is a flowchart for explaining the operation of the exercise load measuring device.

[Explanation of symbols]

 1, 2 Electrocardiogram electrode 3 Amplifier 4 Heartbeat detection unit 5 Central processing unit 6 Subject data input unit 7 Exercise load level display unit 8 Heart rate display unit 9 Speed / tilt control circuit 10 Display panel 11 Treadmill 12, 14 Bar graph

Claims (2)

[Claims] 1. An input unit for inputting subject information such as age, a heart rate detecting unit for detecting a heart rate of a subject during exercise, and a maximum heart rate of the subject based on the subject information input from the input unit. A calculating unit for calculating the exercise load applied to the subject during exercise from at least the maximum heart rate and the heart rate from the heart rate detecting means, and a display for displaying the exercise load calculated by the calculating unit An apparatus for measuring an exercise load by a heart rate, comprising: 2. The exercise load level measuring device according to claim 1, wherein the exercise load level is displayed in a bar graph according to the degree of the measured exercise load level.