RU2015682C1 - Device for assessing physical status of human being - Google Patents

Abstract

FIELD: medical engineering. SUBSTANCE: device employed for evaluating physical status of human being incorporates load presetting unit 1, pulse sensor 2, heart rate meter 3, display unit 4, physical status data processing computer 5, counter 6, first transducer 7, second transducer 8, and control unit 9. EFFECT: higher accuracy and comprehensive data handling. 4 cl, 2 dwg

Description

 The invention relates to medical equipment and can be used in mass surveys of the population to assess physical fitness and issue recommendations for health-improving physical training, while testing students, military personnel, athletes, and specialists in various fields.

 A device for measuring the flexibility of the spine, containing a stand (curbstone) and a ruler with a movable flag for tilting forward standing. There is also known a device for measuring static power endurance, containing a dynamometer and a horizontal bar (Aulik I. A. Determination of physical performance in clinic and sports. M .: Medicine, 1990). However, these devices allow only an isolated assessment of these parameters without a general assessment of a person’s physical fitness.

 The closest in technical essence and the achieved result is a device for assessing the overall endurance of a person, containing a support with a seat and a load node-bicycle ergometer. Its disadvantage is the duration of testing (15-30 minutes or more) and the assessment of only one physical quality - total endurance.

 The aim of the invention is to reduce testing time and increase the information content of assessing a person’s physical fitness by performing a set of dosed physical activities of a different nature and their automated joint assessment.

 Figure 1 is a functional diagram of the proposed device; figure 2 - structural embodiment of the device.

 A device for assessing a person’s physical fitness includes a load setting unit 1, a heart rate sensor 2, a heart rate meter 3, a display unit 4, a physical fitness unit 5, a counter 6, a first 7 and a second 8 converters and a control unit 9. The load setting unit 1 includes a dynamic load adjuster 10 with a sensor, a static load adjuster 11 with a sensor, and a flexibility meter 12 with a sensor, the dynamic load adjuster 10 through a counter 6, a static load adjuster 11 through the first transducer 7, and a flexibility meter 12 through the second transducer 8 and the heart rate meter 3 and the control unit 9 are connected to the inputs of the physical fitness assessment calculation unit 5, the output of which is connected to the information display unit 4.

Assessment of physical fitness is carried out according to the formula
О _фп = (О _в х 2) + О _c + O _g , where О _фп - the sum of the ratings for three indicators in points;
About _in - an estimation of the general endurance in points;
О _с - assessment of static power endurance in points;
О _г - assessment of flexibility in points.

 The device operates as follows.

 To measure total endurance, the test subject performs dosed physical activity in the form of squats from a standing position to a sitting position on a chair 13 under a metronome for 3 minutes with a simultaneous measurement of heart rate using a sensor 2. At the same time, a squeezing contact is triggered due to deformation of the seat upholstery 14 , and at the time of rising, the contact opens. The closing and opening of the contact is fixed by the counter 6. The result of the command of the control unit 9 is supplied to the block 5.

 The calculation of the number of complete cycles (each cycle consists of two movements - sit-up), depending on body weight, is performed according to Table 1.

Before the load, with the help of the pulse sensor 2, the pulse is measured at rest, the allowable pulse is calculated, which ensures the safety of the load according to the formula
Estimated heart rate = (220 - age, years - resting heart rate) x K + resting heart rate, where K is the coefficient of load intensity at the rate of movement of 0.6 or 0.7 - 60% or 70% of the maximum.

 The calculation of the height of the seat depending on the height is made according to the nomogram and table 2 (manual on the physiology of labor. M: Medicine, 1983).

During the execution of the load, the real pulse is constantly compared in block 5 of the calculation with a valid (set) value, and if it exceeds the latter, then a light and sound signal are generated on the information display block 4, according to which the test stops. At the end of the load, a recovery cycle is carried out for 1 min sitting, at the end of which the heart rate of recovery is measured. The calculation of total endurance is made according to the formula (Pirogova E. A., et al. The influence of physical exercises on human performance and health. Kiev: Health, 1986)
About _in (Ruthier Index) = (resting heart rate +
+ Heart rate + Heart rate recovery.) - 200/10
Table 3 gives an estimate of the total endurance by the Ruthier index.

At the end of this exercise, after the time set by block 9, the last time gives a command to block 5, by which the result is read from counter 6, and the signal for switching to the next test is turned on on the information display block 4 and block 5 is prepared to receive the following information. Testing of static strength endurance is carried out by holding the body in a predetermined position, sitting on a chair 13 with legs fixed. The body deviates backward at an angle of 50-65 ^about from the vertical and is fixed in this position, forcing the abdominal muscles, back and others to work in a static mode. In this case, the movable back 15 of the load adjuster 11 with the sensor here serves as an auxiliary mechanism for actuating the contact switch 17, which is the sensor itself. The retention time of the torso through the contact switch 17 is fixed in block 5 in the range from 10 to 60 s. When muscles fatigue or other reasons, the test body is deflected by an angle greater than ^about 50-65, via the movable pin back switch 17 opens and transmits the pulse in block 5, wherein the timer records the time of retention. After that, on the information displaying unit 4, the transition command to the next test is turned on.

 Assessment of static strength endurance (OS) is carried out according to table 4 assessments taking into account gender and age (USA, Morehouse, Leonard, St. Albany, 1977).

 Flexibility testing (in this case, spinal flexibility and mobility in the hip joints, determined by measuring the amplitude of movement of the upper body at maximum bending - leaning forward while sitting) is performed by leaning forward in a sitting position on chair 13 with legs straightened in the knee joints. The legs are in a horizontal position, the feet are fixed on the stops 20. Using the maximum bending of the body and tilting forward with the fingers of outstretched arms, the slider 19 moves along the bar with the package of microswitches 19, closing the contact. Depending on the number of contacts closed by the slider located at a distance of 1 cm from each other, the signals from the microswitches through the converter 8 are fed to the calculation unit 5.

 The assessment of flexibility (Og) in centimeters depending on gender and age is performed according to Table 5 (Canadian Standard Test of Physical Fitness, Ottawa, 1986, modified).

 Then, at the command of control unit 9, calculation unit 5 calculates physical fitness estimates based on the sum of the total endurance, static strength endurance, and flexibility assessments using the above formula. Moreover, the assessment of total endurance doubles as having the largest factor weight among the parameters most associated with health indicators (Pirogova E.A. et al. Influence of physical exercises on human performance and health. Kiev: Health, 1986).

 Assessment of a person’s physical fitness by indicators of three tests is given in Table 6.

PRI me R. Assessment of overall endurance is above average (4x2), strength is average (3), flexibility is high (5). We substitute in the formula: О _фп = (4х2) + 3 + 5 = 16 points, which corresponds to the assessment of physical fitness - above average. The optimality and reliability of the proposed set of parameters characterizing physical fitness is confirmed by its similarity to the battery of US tests (3 tests - step test, torso lifting, forward leaning sitting - Physical Education, Recreation and Dancing magazine, February 1990, p. 45- 39) and our studies comparing physical fitness scores obtained using various testing systems (Minvuz, Kontreks-2, proposed).

 Thus, the proposed device can reduce the time of testing and assessing the physical fitness of a person and increase information content by simultaneously evaluating individual physical qualities (general endurance, static power endurance, flexibility) and their automated processing.

Claims (4)

 1. A device for assessing physical fitness of a person, comprising a pulse sensor and a heart rate meter connected in series, as well as a load setting unit and an information display unit, characterized in that a physical fitness evaluation calculating unit, a counter, first and second converters are introduced therein and a control unit, and the load setting unit includes a dynamic load controller with a motion sensor, a static load controller with a sensor and a flexibility meter with a sensor, moreover, a dynamic load sensor through a counter, a static load controller through a first converter, a flexibility meter through a second converter, and a heart rate meter and a control unit are connected to the inputs of the physical fitness assessment calculation unit, the output of which is connected to the information display unit.  2. The device according to claim 1, characterized in that the dynamic load adjuster is made in the form of a height-adjustable chair with a closing contact mounted in the seat.  3. The device according to claim 1, characterized in that the static load adjuster is made in the form of a movable back, equipped with a seat and a contact switch of the angle of inclination mounted therein.  4. The device according to claim 1, characterized in that the flexibility meter is made in the form of a footrest mounted on a movable support, and a strap with a package of contact switches and a slider mounted on a movable support.

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