CN111329478A - Method for detecting grip strength based on standing type biological impedance - Google Patents
Method for detecting grip strength based on standing type biological impedance Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000004364 calculation method Methods 0.000 claims abstract description 16
- 238000005259 measurement Methods 0.000 claims description 34
- 210000003205 muscle Anatomy 0.000 abstract description 8
- 230000036541 health Effects 0.000 abstract description 7
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000011871 bio-impedance analysis Methods 0.000 description 12
- 238000012360 testing method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 210000001519 tissue Anatomy 0.000 description 3
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- 238000011156 evaluation Methods 0.000 description 2
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- 230000001071 malnutrition Effects 0.000 description 2
- 235000016709 nutrition Nutrition 0.000 description 2
- 208000015380 nutritional deficiency disease Diseases 0.000 description 2
- 238000000611 regression analysis Methods 0.000 description 2
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- 235000021543 depleted nutrition Nutrition 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/053—Measuring electrical impedance or conductance of a portion of the body
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/22—Ergometry; Measuring muscular strength or the force of a muscular blow
- A61B5/224—Measuring muscular strength
- A61B5/225—Measuring muscular strength of the fingers, e.g. by monitoring hand-grip force
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/45—For evaluating or diagnosing the musculoskeletal system or teeth
- A61B5/4519—Muscles
Abstract
The invention belongs to the technical field of biological detection, and provides a method for detecting the grip strength based on standing biological impedance. The method mainly comprises the steps of obtaining the sex, the weight, the age and the height of a testee by a biological impedance measuring device, enabling the testee to be in a standing posture and enabling at least two of four limbs to be in contact with a first electrode group and a second electrode group respectively, inputting a measuring current into one of the first electrode group and the second electrode group by the biological impedance measuring device, receiving the measuring current by the other of the first electrode group and the second electrode group to calculate the resistance value and the reactance value of the tested part of the testee, and calculating the grip strength of the testee by a calculation formula, so that the muscle quality is evaluated and used as an index of human health.
Description
Technical Field
The invention belongs to the technical field of biological detection, and particularly relates to a method for detecting grip strength based on standing biological impedance.
Background
Nearly 14 million patients in more than ten countries are researched, and the death probability of the patients is increased by 16 percent, the possibility of heart attack is increased by 7 percent, and the risk of stroke is increased by 9 percent when the grip strength (HGS) of the human body is weakened by 5 kilograms; the HGS can be used for evaluating the health and development conditions of children and teenagers, and the average test result of different testee groups can also be used as an important reference basis after the hand operation of patients. In addition, studies show that HGS shows parameters of nutritional loss (nutritional depletion) and nutritional supplement (nutritional supplement) earlier than other body parameters, and that the loss ratio of HGS to protein is related to the ratio of muscle function, and HGS is one of the main reference data when diagnosing malnutrition of a patient, and can improve prognosis by improving parameters of HGS when performing nutrition therapy on the malnutrition patient. It has also been shown that HGS when admitted to a hospital can predict the length of stay and survival of hospitalized patients, with shorter stays and higher survival rates for higher HGS.
From the above, since HGS can provide information about the overall muscle strength, it can be used for clinical reference, such as: reflecting the influence of aging on the body functions of the elderly, the muscle strength and the functional condition of the whole body, therefore, the HGS parameters can provide the quality of the muscle of the human body for evaluation, and can be used as the index of the health of the human body.
Currently, hand-held force meters (dynamometers), Bioelectrical Impedance Analysis (BIA), and the like are mainly used as techniques for measuring the HGS of the human body.
The hand-held dynamometer is characterized in that a testee can directly press the dynamometer by grip strength to obtain grip strength parameters, and the hand-held dynamometer has the advantages of low cost, portability, simple operation and the like; however, the test result is easily affected by many factors such as the tested device, the test environment, the physical condition, posture, and psychology of the tested person, and the measured grip strength parameter is easily subject to error.
In the prior BIA technique, the subject is in a supine position and then adhered to the skin surfaceInputting a safe AC current to the subject by the electrodes, as shown in FIG. 1, measuring the corresponding Resistance (R) and Reactance (Xc) through the AC current, and further calculating the Phase angle (PhA) according to the measurement result (shown in FIG. 1)
) The BIA technique has been used for body composition estimation in medical and research because of its safety, non-invasive, convenient and low cost, but there are currently only two related supine BIA applications for estimating grip strength in terms of BIA estimation and real application (1.Norman, K.; Pirlich, M.; Sorensen, J.; Christensen, P.; Kemps, M.; Sch ü tz, T.; Lochs, H.; Kondrup, J.Bioimpday Vector Analysis as an aid of mass function. Clin. Nutr.2009,28: 78-82.; 2.Rodr I. guez-Rodr I. guez, ImF.; Criti Mono, C.; Gonz lez-I. 1. Q.; 2.Rodr I. U.g. J.S.A. A. B.
Disclosure of Invention
The main objective of the present invention is to provide a method for detecting grip strength based on standing bioimpedance, which uses the person to be tested in standing posture to perform BIA measurement, and directly analyzes the bioelectrical characteristics of human tissue, and the HGS parameters obtained by calculation can provide the quality of human muscle to be evaluated as the index of human health.
In order to achieve the above object, the present invention provides a method for detecting grip strength based on standing bio-impedance, which comprises the following steps: (a) obtaining sex, weight, age and height of a subject by a bioimpedance measurement device; the biological impedance measuring device is provided with at least one first electrode group and at least one second electrode group, and the testee is in a standing posture and respectively contacts the at least one first electrode group and the at least one second electrode group by at least two of four limbs; the bio-impedance measuring device inputs a measuring current to one of the at least one first electrode set or the at least one second electrode set, and receives the measuring current from the other of the at least one first electrode set or the at least one second electrode set to calculate the resistance value and the reactance value of the tested part of the tested person; and the grip strength of the subject is calculated by the following calculation formula: HGS ═ a + bSex + cwight + tage + eHt + fXc/Ht + g R/Ht, wherein a, b, c, d, e, f and g are weight coefficients, the weight coefficients are used for measuring the height, weight, age, sex, resistance and reactance of different limb segments of a group of testees, the collected grip strength is the independent variable of the strength, height, weight, age, sex, resistance and reactance of different limb segments, and regression analysis is applied to obtain grip strength estimation formulas of different measurement modes and corresponding weight coefficients; according to different measurement modes in the application, the weight coefficient under each measurement mode is generated, so that a specific calculation formula under each measurement mode is obtained. In the formula, Sex is the Sex of the subject, the coefficient is 0 if the Sex is female, and the coefficient is 1 if the Sex is male; weight is the Weight of the subject; age is the Age of the subject; ht is the height of the subject; xc is the reactance of the subject; r is the measured resistance of the subject.
In a certain embodiment, the subject in step (b) contacts the first and second sets of electrodes with both hands in the extremities, respectively.
In a certain embodiment, the subject in step (b) contacts the first and second sets of electrodes with both feet in the extremities, respectively.
In a certain embodiment, one hand of the subject in step (b) contacts the first set of electrodes and one foot contacts the second set of electrodes.
In one embodiment, the bio-impedance measuring apparatus has two first electrode sets and one second electrode set, one of the hands and one of the feet of the subject contact one of the first electrode sets, and the other hand of the subject contacts the second electrode set.
In one embodiment, the bio-impedance measuring apparatus has two first electrode sets and one second electrode set, one of the hands and one of the feet of the subject contact one of the first electrode sets, and the other of the feet of the subject contacts the second electrode set.
In one embodiment, the bio-impedance measuring device has two first electrode sets and two second electrode sets, one hand and one foot of the subject respectively contact one first electrode set, and the other hand and the other foot of the subject respectively contact one second electrode set.
In one embodiment, the bio-impedance measuring apparatus has two first electrode sets and two second electrode sets, two hands of the subject respectively contact one first electrode set, and two feet of the subject respectively contact one second electrode set.
In one embodiment, the frequency of the measurement current is between 5KHz and 250 KHz.
Compared with the prior art, the method has the beneficial effects that: the invention provides a method for detecting the strength of a gripping force based on standing type biological impedance, which is to perform BIA measurement by a person to be detected in a standing posture, wherein the BIA measurement is directly used for analyzing the bioelectricity characteristics of human tissues, and the HGS parameters obtained through calculation can be used for evaluating the quality of human muscles and used as indexes of human health.
Drawings
FIG. 1 is a Cole-Cloe Plot (Cole-Cloe Plot) of resistance and reactance.
FIG. 2 is a flow chart of the method of the present invention.
FIG. 3 is a block diagram of the method of the present invention.
FIG. 4 is a schematic view of the first preferred embodiment of the present invention, showing the two hands of the person under test being measured.
FIG. 5 is a schematic view of the first preferred embodiment of the present invention, showing the measurement of the two feet of the subject.
FIG. 6 is a schematic view of the first preferred embodiment of the present invention, showing the right hand and the right foot of the subject being measured.
FIG. 7 is a schematic view of the first preferred embodiment of the present invention, showing the left hand and the left foot of the subject being measured.
FIG. 8 is a schematic view of the first preferred embodiment of the present invention, showing the right hand and left foot of the subject being measured.
FIG. 9 is a schematic view of the first preferred embodiment of the present invention, showing the left and right feet of the subject being measured.
FIG. 10 is a schematic view of a second preferred embodiment of the present invention, showing the right hand of a person under test.
FIG. 11 is a schematic view of a second preferred embodiment of the present invention, showing the left hand of a measurement subject.
FIG. 12 is a schematic view of a second preferred embodiment of the present invention, showing the right foot of a subject being measured.
FIG. 13 is a schematic view of a second preferred embodiment of the present invention, showing the left foot of a subject being measured.
FIG. 14 is a schematic view of a third preferred embodiment of the present invention, showing the measurement of the torso of a subject.
FIG. 15 is a schematic view of a fourth preferred embodiment of the present invention, which shows the measurement of the whole body of a subject.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail. It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
Referring to fig. 2-9, a first preferred embodiment of a method 10 for detecting grip strength based on standing bioimpedance according to the present invention comprises the following steps:
(a) obtaining sex, weight, age and height of a subject by a bioimpedance measuring device 20; in the preferred embodiment, the sex, age and height of the subject are provided by the subject's own input, and the weight of the subject is measured by the bioimpedance measuring device 20, but the invention is not limited thereto in other preferred embodiments.
(b) The bio-impedance measuring device 20 has a first electrode set 21 and a second electrode set 23, and the subject is in a standing posture and contacts the first electrode set 21 and the second electrode set 23 with at least two of four limbs respectively.
(c) The bio-impedance measuring device 20 inputs a measuring current to one of the first electrode set 21 or the second electrode set 23, and receives the measuring current from the other of the first electrode set 21 or the second electrode set 23 to calculate the resistance and reactance of the measured part of the subject; the frequency of the measuring current is 50KHz, but not limited to this, and the measuring current frequency can be implemented between 5KHz and 200 KHz.
(d) The grip strength of the subject is calculated by the following calculation formula:
DHGS ═ a + bSex + cwight + dAge + eHt + fXc/Ht + g R/Ht, where
DHGS (dominant hand grip strip, HGS) is the grip strength of the hand; a. b, c, d, e, f and g are weight coefficients, the weight coefficients are used for measuring the height, the weight, the age, the sex, the resistance and the reactance of different limb segments and corresponding grip strength of a group of testees, the collected grip strength is a dependent variable, and the grip strength estimation formulas of different measurement modes and corresponding weight coefficients are obtained by applying regression analysis, wherein the collected grip strength is the independent variable, and the resistance and the reactance of different limb segments are the independent variables; wherein Sex is the Sex of the subject (the coefficient is 0 for female Sex and 1 for male Sex); weight is the Weight of the subject; age is the Age of the subject; ht is the height of the subject; xc is the reactance of the subject; r is the measured resistance of the subject. According to the different measurement modes in the present application, a weight coefficient is generated in each measurement mode.
For the hand-to-hand measurement, as shown in fig. 3 and 4, the subject holds the first and second electrode sets 21, 23 in a standing posture with both hands, the bioimpedance measurement apparatus 20 inputs the measurement current to the first electrode set 21, and receives the measurement current from the second electrode set 23 to calculate the resistance and reactance of both hands of the subject, and calculate the grip of the subject according to the grip calculation formula of the subject. Of course, the bio-impedance measuring device 20 can also input the measuring current to the second electrode set 23, and the first electrode set 21 receives the measuring current, so as to calculate the resistance and reactance of the two hands of the subject, and also calculate the grip strength of the subject.
For the foot-to-foot measurement, as shown in fig. 3 and 5, the subject is in a standing posture and has feet of both feet contacting the first and second electrode sets 21, 23, respectively, the bioimpedance measuring apparatus 20 inputs the measurement current to the first electrode set 21, and receives the measurement current from the second electrode set 23 to calculate the resistance and reactance of both feet of the subject, and calculate the grip strength of the subject according to the grip strength calculation formula of the subject.
For the measurement of the hand-foot, as shown in fig. 3, 6 and 7, the subject is in a standing posture and contacts the first electrode set 21 and the second electrode set 23 with the right hand and the right foot (fig. 6) or the left hand and the left foot (fig. 7) of the subject, the measurement current is inputted to the first electrode set 21 by the bioimpedance measuring apparatus 20, and the measurement current is received by the second electrode set 23 to calculate the resistance and reactance of the right hand and the right foot or the left hand and the left foot of the subject, and the grip of the subject is calculated by the grip calculation formula. As shown in fig. 3, 8 and 9, the subject is in a standing posture and contacts the first electrode set 21 and the second electrode set 23 with the right hand and the left foot (fig. 8) or the left hand and the right foot (fig. 9) of the subject, respectively, the measured current is input to the first electrode set 21 by the bio-impedance measuring device 20, and the measured current is received by the second electrode set 23, so as to calculate the resistance value and the reactance value of the right hand and the left foot of the subject or the left hand and the right foot of the subject, and calculate the grip of the subject by the grip calculation formula of the subject.
Therefore, the present invention provides a method for detecting the strength of grip strength based on standing bioimpedance, which uses the person to be tested in standing posture to perform BIA measurement, wherein the BIA measurement directly analyzes the bioelectricity characteristics of human tissue, and the HGS parameters obtained through calculation can provide the quality of human muscle to be evaluated as the index of human health.
The main steps and the achieved effect of the second preferred embodiment of the method 10 for detecting the grip strength by standing-type bio-impedance of the present invention are generally the same as those of the first preferred embodiment, except that: as shown in fig. 3, 10 and 11, the bio-impedance measuring apparatus has two first electrode sets 21 and one second electrode set 23, the subject is in a standing posture and contacts one first electrode set 21 with the right hand and the right foot of the subject, the left hand of the subject contacts the second electrode set 23 (fig. 10) or contacts one first electrode set 21 with the left hand and the left foot, respectively, and the right hand of the subject contacts the second electrode set 23 (fig. 11); the bio-impedance measuring device 20 inputs the measured current to the first electrode set 21, and the second electrode set 23 receives the measured current to calculate the resistance and reactance of the right or left hand of the subject, and calculate the grip strength of the subject according to the grip strength calculation formula of the subject.
As shown in fig. 3, 12 and 13, the bio-impedance measuring apparatus has two first electrode sets 21 and one second electrode set 23, the right hand and the right foot of the subject contact one of the first electrode sets 21 respectively, the left foot of the subject contacts the second electrode set 23 (fig. 12), or the left hand and the left foot of the subject contact one of the first electrode sets 21 respectively, and the right foot of the subject contacts the second electrode set (fig. 13); the measurement current is inputted to the first electrode set 21 by the bio-impedance measurement device 20, and the measurement current is received by the second electrode set 23 to calculate the resistance and reactance of the right or left foot of the subject, and calculate the grip strength of the subject by the grip strength calculation formula of the subject.
The main steps and the achieved effect of the third preferred embodiment of the standing type bio-impedance detection method for grip strength of the present invention are substantially the same as the first preferred embodiment, except that:
as shown in FIGS. 3 and 14, the bio-impedance measuring apparatus has two first electrode sets 21 and two second electrode sets 23, the right hand and the right foot of the subject contact one of the first electrode sets 21, respectively, and the left hand and the left foot of the subject contact one of the second electrode sets 23, respectively; the bio-impedance measuring device 20 inputs the measured current to the first electrode set 21, and the second electrode set 23 receives the measured current to calculate the resistance and reactance of the torso of the subject, and calculate the grip strength of the subject according to the grip strength calculation formula of the subject.
The main steps and the achieved effect of the fourth preferred embodiment of the standing type bio-impedance detection method for grip strength of the present invention are substantially the same as the first preferred embodiment, except that: referring to fig. 3 and 15, the bio-impedance measuring apparatus has two first electrode sets 21 and two second electrode sets 23, two hands of the subject contact with one first electrode set 21, and two feet of the subject contact with one second electrode set 23; the bio-impedance measuring device 20 inputs the measured current to the first electrode set 21, and the second electrode set 23 receives the measured current to calculate the resistance and reactance of the whole body of the subject, and calculate the grip strength of the subject according to the grip strength calculation formula of the subject.
In summary, the present invention provides a method for detecting grip strength by standing-type bio-impedance, wherein the measurement portion of BIA is not limited to the hand of the subject, but the measurement results of BIA of multiple limbs or different limbs can be further calculated to obtain HGS parameters, so as to provide the quality of human muscle for evaluation as the index of human health.
Unless specifically stated otherwise, the numerical values set forth in these examples do not limit the scope of the invention. In all examples shown and described herein, unless otherwise specified, any particular value should be construed as merely illustrative, and not restrictive, and thus other examples of example embodiments may have different values.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (9)
1. A method for detecting the strength of a grip strength based on standing bioimpedance is characterized by comprising the following steps:
(a) obtaining the sex, weight, age and height of the subject by using a bio-impedance measuring device;
(b) the biological impedance measuring device is provided with at least one first electrode group and at least one second electrode group, and the testee is in a standing posture and respectively contacts the at least one first electrode group and the at least one second electrode group by at least two of limbs;
(c) the bio-impedance measuring device inputs a measuring current to one of the at least one first electrode group or the at least one second electrode group, and receives the measuring current from the other one of the at least one first electrode group or the at least one second electrode group to calculate a resistance value and a reactance value of the tested part of the tested person;
(d) the grip strength of the testee is calculated by the following calculation formula: HGS ═ a + bSex + cwight + tage + eHt + fXc/Ht + gR/Ht, where a, b, c, d, e, f, and g are weight coefficients, Sex is the Sex of the subject, the Sex coefficient is 0 for female, and the Sex coefficient is 1 for male; weight is the Weight of the subject; age is the Age of the subject; ht is the height of the subject; xc is the reactance of the subject; r is the measured resistance of the subject.
2. The method of claim 1, wherein said subject in step (b) contacts said first and second sets of electrodes with both hands × in the extremities, respectively.
3. The method of claim 1, wherein the subject in step (b) contacts the first and second electrode sets with both feet in the extremities, respectively.
4. The method of claim 1, wherein one of the hands of the subject in step (b) contacts the first set of electrodes and one of the feet contacts the second set of electrodes.
5. The method of claim 1, wherein said bio-impedance measuring device has two of said first electrode sets and one of said second electrode sets, one of said hand and one of said foot of said subject contacting one of said first electrode sets, respectively, and the other hand of said subject contacting said second electrode set.
6. The method of claim 1, wherein said bio-impedance measuring device has two of said first electrode sets and one of said second electrode sets, one of said hand and one of said foot of said subject contacting one of said first electrode sets, respectively, and the other of said foot of said subject contacting said second electrode set.
7. The method of claim 1, wherein said bio-impedance measuring device has two of said first electrode sets and two of said second electrode sets, one of said hand and one of said foot of said subject contacting one of said first electrode sets, respectively, and the other of said hand and said foot of said subject contacting one of said second electrode sets, respectively.
8. The method of claim 1, wherein the bio-impedance measuring device has two of the first electrode sets and two of the second electrode sets, two hands of the subject respectively contact one of the first electrode sets, and two feet of the subject respectively contact one of the second electrode sets.
9. The method of claim 1, wherein the frequency of the measurement current is between 5KHz and 250 KHz.
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