CN110013229B - Thermal habit-taking determining method based on rectal temperature - Google Patents
Thermal habit-taking determining method based on rectal temperature Download PDFInfo
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- CN110013229B CN110013229B CN201810013464.4A CN201810013464A CN110013229B CN 110013229 B CN110013229 B CN 110013229B CN 201810013464 A CN201810013464 A CN 201810013464A CN 110013229 B CN110013229 B CN 110013229B
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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
- A61B5/01—Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue
- A61B5/015—By temperature mapping of body part
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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
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7271—Specific aspects of physiological measurement analysis
Abstract
The invention discloses a thermal habit determining method based on rectal temperature, which comprises a thermal habit training sample screening method, a thermal habit forming preliminary inspection method, a thermal habit state testing working condition determining method, a balance state determining method, a thermal habit state testing method and a balance state-environment curve inspection method. The invention provides a judgment basis for judging whether a thermal habit is formed or not. The method considers the heat stress performance of the human body in different environments, provides a balance state-environment curve, provides a scientific and comprehensive judgment basis for determining whether the heat habit suit is formed in the heat habit suit training, avoids invalid training, excavates the maximum potential of the heat habit suit of the human body, and lays a foundation for comparing and optimizing different heat habit suit training methods.
Description
Technical Field
The invention belongs to the technical field of high-temperature operation environments, and particularly relates to a rectal temperature-based hot-learning clothes determination method.
Background
High temperature environments are ubiquitous in industries such as steel, mining, military and the like. In recent years, global warming has made "hot wave" attacks more frequent in various cities, and extreme high temperature environments have become more common. The operation can arouse all kinds of physiology, psychological reactions of operation personnel under high temperature environment, endangers operation personnel health simultaneously, reduces work efficiency, aggravates fatigue for the possibility that takes place the safety accident promotes greatly. The phenomenon can be relieved by heat habituation training, various physiological and psychological stresses of operating personnel in a high-temperature environment are relieved, and the adaptability of the human body to the environment is widened. An effective method for obtaining the thermal habit is thermal habit training, namely, the adaptability to the thermal environment is obtained in a short time by moving every day in a high-temperature environment. The training conditions and methods of the thermal habit clothes are various, and the problems of determining the state of the thermal habit clothes, forming the thermal habit clothes and the like become the key for judging the good and bad of the training method of the thermal habit clothes, so that the reasonable method for judging the state of the thermal habit clothes is needed to be solved firstly.
The current methods for judging whether the thermal habit formation is formed mainly comprise a specific working condition method and a stability judging method. The special working condition method is that a trainer tests in a special environment and under a special labor intensity, and whether the thermal habit formed is determined by calculating the improvement degree of the rectal temperature (for example, the rectal temperature is reduced by 0.5 ℃) of a special test before and after the thermal habit training. The stability judgment method is to judge whether the rectal temperature is not improved any more and basically reaches the stability in the later period of the heat habit formation of the trainer, so as to determine whether the heat habit formation occurs.
The specific working condition method is intrusive, a specific thermal stress test needs to be inserted into the thermal habit training, the original thermal habit training is interfered, and obstacles are brought to the thermal habit training research. And the improvement degree of the rectal temperature is utilized to judge the formation of the thermal habit-forming clothes, so that the maximum potential of the thermal habit-forming clothes training cannot be embodied. Although the smooth judgment method does not have the defects, the smooth judgment method only can indicate that the trainer achieves stability under a single environmental condition and cannot indicate that the trainer achieves stability under other environmental conditions, so that the method cannot exert the maximum potential of the thermal habit. As described above, both of these methods have certain limitations, and therefore, in order to more fully evaluate the hot wear state in training and to develop the maximum potential of hot wear training, it is necessary to design a more fully practical method for determining hot wear.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a thermal habit determining method based on rectal temperature, which is used for comprehensively evaluating the state of the thermal habit and exerting the maximum potential of thermal habit training.
The technical purpose of the invention is realized by the following technical scheme:
a thermal habit determining method based on rectal temperature comprises a thermal habit training sample screening method, a thermal habit formation preliminary testing method, a thermal habit testing working condition determining (environmental parameter determining, labor intensity determining, environmental parameter testing sequence determining), a balance state determining, a thermal habit state testing method and a balance state-environmental curve testing method, and is carried out according to the following steps:
step 1: screening the trainees according to the physiological parameters in the quiet state;
in step 1, experimenters are selected, and trainers are required to measure heart rate and blood pressure in a resting state (namely a sitting state). If the heart rate of the trainer is less than 110b/min, the blood pressure is less than 140/90mmHg, and 5-10 persons are selected.
Step 2: the trainer carries out the hot training; performing severe training in a high-temperature environment, namely performing training with severe labor intensity at the temperature of more than 32 hough degrees, collecting and analyzing the rectum temperature of experimenters when the training is finished, performing paired sample t test on the rectum temperature of the Nth day and the rectum temperature of the N-1 th day, performing thermal habituation state test if the rectum temperature of the Nth day and the rectum temperature of the N-1 th day have no significant difference, and continuing the thermal habituation training if the rectum temperature of the Nth day and the rectum temperature of the N-1 th day have significant difference;
in step 2, when the thermal habitual training is performed, the training is performed for more than 1 hour every day, such as 60-90 min, the training time is kept consistent every day, and the environment for the training is kept consistent every day, that is, the temperature, the humidity and the like are kept consistent.
Step 3, testing the hot habitual clothes state: the experimental personnel sit still under the experimental environment, the rectal temperature is tested once every 10 minutes, the extreme difference of the rectal temperature values obtained by three continuous tests is smaller than the precision value of the test instrument, the experimental personnel is considered to reach the balance state at the moment, the experimental personnel enters the next working condition to sit still according to the sequence of the working conditions, the rectal temperature is tested once every 10 minutes, the extreme difference of the rectal temperature values obtained by three continuous tests is smaller than the precision value of the test instrument, and the experimental personnel is considered to reach the balance state at the moment; under each working condition, when the extreme difference of the rectal temperature values obtained by continuous testing for three times is smaller than the precision value of the testing instrument, the three rectal temperature values are averaged to be used as the equilibrium state rectal temperature under the working condition;
and converting the environmental parameters into WBGT indexes according to an existing formula or testing the environment by using a WBGT temperature instrument to obtain corresponding WBGT indexes, taking the WBGT index of each working condition as an abscissa and the equilibrium state rectal temperature of each working condition as an ordinate, and smoothly connecting equilibrium state points of each test working condition to form a curve to obtain a state curve. The curve reflects the adaptability of the trainer to various environments and is a judgment basis for judging whether the thermal habit is formed or not. Let Wk,jFor the jth operating point equilibrium state rectal temperature of the kth thermal habituation state test, Wk,jAnd Wk-1,jPaired samples were tested for t, as described above. If the rectum temperatures in the equilibrium states of all the working condition points have no significant difference, the state curve is considered to be stable, the trainee forms the thermal habit, and the thermal habit training can be finished.
The equilibrium state-environment curve determination is a stress curve of a trainer under various environments by taking rectal temperature as an index. The WBGT temperature is used as an abscissa, the equilibrium state rectal temperature is used as an ordinate, and equilibrium state points of all test working conditions are smoothly connected to form a curve, namely, six points form a curve. Comparing the curve obtained by the last test with the curve obtained by the current test, if the two curves are basically coincident, performing matched sample t test on the equilibrium state rectal temperature of each working condition point obtained by the current test and the equilibrium state rectal temperature of each working condition point obtained by the last test, and if the test results under all the working conditions show no significance, finishing the thermal habituation training and indicating that a trainer forms a thermal habituation suit; otherwise, the hot habitual training is carried out again.
The screening of the thermal habit training sample is to enable a trainer to move in a sub-high temperature environment, and determine whether the trainer can carry out thermal habit training or not through the change of the rectal temperature. The preliminary examination method for the formation of the heat habit garment is to preliminarily judge whether the heat habit garment is formed or not by utilizing the change of the rectal temperature of a trainer under the training working condition.
In the hot uniform state test, the determination of the hot uniform state test working condition comprises three parts of environmental parameters, labor intensity and an environmental working condition test sequence. The environment parameters need to be provided with a plurality of groups of different working condition points, the labor intensity can be fixed, and the environment working condition test sequence follows the arrangement from a neutral state to an overheated state. Different test working conditions, different sequences and different labor intensity have important influence on the test of the heat habit clothes state. The equilibrium state is determined according to the rectal temperature change of the trainer to judge whether the thermal environment reaches relative equilibrium and is relatively stable. In a thermal environment, if the thermal stress does not exceed the maximum limit of the human body, the human body and the environment can reach a relative equilibrium state along with the increase of time, and the equilibrium state is an important basis of a thermal habit determining method. The equilibrium state-environment curve inspection method is used for judging whether the thermal habit of a trainer is formed or not, wherein the equilibrium state-environment curve is obtained by uniformly converting environment parameters of different temperature and humidity combinations into comprehensive environment parameters. The method firstly makes a curve by using comprehensive environmental parameters and equilibrium rectal temperature, and intuitively shows the stress performance of the human body in various high-temperature environments. Then, whether the thermal habit is formed is roughly judged according to whether the movement of the equilibrium state-environment curve is stable or not. Finally, a statistical method is used to further judge whether the state curve has significant difference (whether the state curve is stable), and if the state curve has no significant difference (namely the state curve is stable), the thermal habit is formed.
Compared with the prior art, the invention is a thermal habit determining method based on the rectal temperature, and provides a basis for judging whether the thermal habit is formed or not. The method considers the heat stress performance of the human body in different environments, provides a balance state-environment curve, provides a scientific and comprehensive judgment basis for determining whether the heat habit suit is formed in the heat habit suit training, avoids invalid training, excavates the maximum potential of the heat habit suit of the human body, and lays a foundation for comparison and optimization of different heat habit suit training methods.
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FIG. 1 is a schematic representation of the process steps of the present invention.
Detailed Description
The technical scheme of the invention is further explained by combining specific examples.
Selecting experimenters, and requiring trainers to measure heart rate and blood pressure in a resting state (namely a sitting state). If the heart rate of the trainer is less than 110b/min and the blood pressure is less than 140/90mmHg, the heat habit training can be entered, and five people are selected.
Five experimenters were subjected to thermal habitual training: the method comprises the steps of performing severe training in a high-temperature environment, namely performing training with heavy labor intensity at an ambient temperature of more than 32 degrees of hough (training for more than 1 hour every day, such as 60-90 min, the training time per day is kept consistent, the environment for the training every day is kept consistent, namely, the temperature, the humidity and the like are kept consistent), collecting the rectal temperature of an experimenter when the training is finished, analyzing the rectal temperature of an experimenter, performing matched sample t test on the rectal temperature of the Nth day and the rectal temperature of the Nth-1 th day, performing thermal habituation state test if the rectal temperature and the rectal temperature of the Nth-1 th day are not significantly different, and continuing the thermal habituation training if the rectal temperature and the rectal temperature are significantly different.
The paired sample t-test is a statistical method, and aims to test whether the difference between the overall mean of the difference values of the paired samples and the overall mean 0 is statistically significant, i.e., whether the difference of the paired samples is statistically significant. The method comprises the following steps:
the first step is as follows: constructing a random variable Y ═ Rm-Rm-1Corresponding to a sample value of (y)1,y2,y3…yn)，yi＝rm,i-rm-1,i. Wherein r ism,iThe rectal temperature at the end of the thermal habituation exercise on day m for the i-th trainer is shown.
The second step is that: establishing an original hypothesis: mu.sy＝0
The third step: constructing t statistics
Wherein
Is the mean of the difference samples, SyIs the standard deviation of the difference sample, and n is the sample volume, i.e. the number of trainees.
The fourth step: given the level of significance, the level of significance is given as α ═ 0.05 in the present method
The fifth step: calculating statistic t if t < tα(n-1), the original hypothesis is rejected and a significant difference is considered. Otherwise, the two are considered to have no significant difference.
Testing the heat habit-formation state: the experimental personnel sit still under the experimental environment, the rectal temperature is tested once every 10 minutes, the extreme difference of the rectal temperature values obtained by continuous testing for three times is smaller than the precision value of the testing instrument, the experimental personnel is considered to reach the balance state at the moment, the experimental personnel enters the next working condition to sit still according to the sequence of the working conditions, the rectal temperature is tested once every 10 minutes, the extreme difference of the rectal temperature values obtained by continuous testing for three times is smaller than the precision value of the testing instrument, and the experimental personnel is considered to reach the balance state at the moment;
under each working condition, when the range of the rectal temperature values obtained by continuously testing for three times is smaller than the precision value of the testing instrument, the three rectal temperature values are averaged and used as the equilibrium state rectal temperature under the working condition
And converting the environmental parameters into WBGT indexes according to an existing formula or testing the environment by using a WBGT temperature instrument to obtain corresponding WBGT indexes, taking the WBGT index of each working condition as an abscissa and the equilibrium state rectal temperature of each working condition as an ordinate, and smoothly connecting equilibrium state points of each test working condition to form a curve to obtain a state curve. The curve reflects the adaptability of the trainer to various environments and is a judgment basis for judging whether the thermal habit is formed or not. Let Wk,jFor the jth operating point equilibrium state rectal temperature of the kth thermal habituation state test, Wk,jAnd Wk-1,jPaired samples were tested for t, as described above. If the rectum temperatures in the equilibrium states of all the working condition points have no significant difference, the state curve is considered to be stable, the trainee forms the thermal habit, and the thermal habit training can be finished.
The preliminary test of the heat habit is to carry out preliminary judgment according to the rectal temperature change during the training period of the heat habit. To RmAnd Rm-1Performing a paired sample t test, wherein RmThe rectal temperature at the end of the thermal habituation training on day m is indicated.
The thermal habit formation testing working condition determination comprises three parts of environmental parameters, labor intensity and an environmental working condition testing sequence. The environmental parameters adopt temperature and humidity and WBGT temperature as indexes, at least 4 working condition points are required to be set, and the working condition points comprise a neutral state (T)wbgtLess than 23)1 point, high temperature dry heat state (T is more than or equal to 23)wbgtLess than 30, phi is less than or equal to 40 percent) and 2 points in a high-temperature and high-humidity state (T is less than or equal to 30)wbgtPhi is more than or equal to 70 percent) 1 point. The test sequence of the environmental working conditions is arranged from small to large according to the WBGT temperature, so that the trainer can get from middle to middleFrom a state of dry heat at high temperature to a state of high humidity at high temperature. The recommended operating conditions were selected and the test sequence is shown in table 1. In order to reduce the interference of the hot clothes-learning state test on the original hot clothes-learning intervention, the labor intensity is selected as quiet sitting, and the method belongs to mild labor intensity.
TABLE 1 thermal behavior test Condition
The determination of the equilibrium state is used to determine whether the rectal temperature has reached a relatively stable temperature and whether the human body has reached thermal equilibrium with the surrounding environment. The method comprises the following steps that the precision of an instrument for measuring the rectal temperature is set to be delta tau, and the rectal temperature measurement range of a trainer is set to be delta alpha within 20 min. If delta alpha is less than or equal to delta tau, the human body is considered to have reached the equilibrium state, and the average rectal temperature value within 20min is the equilibrium rectal temperature.
The hot habitual state test is to let the trainer sit still under the set test conditions, and the recommended test conditions are shown in table 1. Under the corresponding working conditions, the rectal temperature of the trainer firstly rises and then tends to be stable along with the time. And when the balance state is determined to be reached, adjusting the environmental temperature and humidity parameters to start the next working condition until all the working conditions are finished. Therefore, the heat stress response of the subject under different environmental conditions can be measured, and the comprehensive evaluation of the heat habit in different environments can be obtained.
The equilibrium state-environment curve determination is a stress curve of a trainer under various environments by taking rectal temperature as an index. The WBGT temperature is used as an abscissa, the equilibrium state rectal temperature is used as an ordinate, and equilibrium state points of all test working conditions are smoothly connected to form a curve, namely, six points form a curve. Comparing the curve obtained by the last test with the curve obtained by the current test, if the two curves are basically coincident, performing matched sample t test on the equilibrium state rectal temperature of each working condition point obtained by the current test and the equilibrium state rectal temperature of each working condition point obtained by the last test, and if the test results under all the working conditions show no significance, finishing the thermal habituation training and indicating that a trainer forms a thermal habituation suit; otherwise, the hot habitual training is carried out again.
The invention has been described in an illustrative manner, and it is to be understood that any simple variations, modifications or other equivalent changes which can be made by one skilled in the art without departing from the spirit of the invention fall within the scope of the invention.
Claims (5)
1. A thermal habit determining method based on rectal temperature is characterized by comprising the following steps:
step 1: screening the trainees according to the physiological parameters in the quiet state;
step 2: the trainer carries out the hot training; performing severe training in a high-temperature environment, namely performing training with severe labor intensity at the temperature of more than 32 ℃, wherein during thermal habituation training, the training time is kept consistent every day for more than 1 hour every day, the environment for daily training is kept consistent, the rectal temperature of an experimenter is collected and analyzed after the training is finished, and a matching sample t test is performed on the rectal temperature of the Nth day and the rectal temperature of the Nth-1 th day, if the rectal temperature and the rectal temperature are not significantly different, performing the thermal habituation state test, and if the rectal temperature and the rectal temperature are significantly different, continuing the thermal habituation training;
step 3, testing the hot habitual clothes state: the experimental personnel sit still under the experimental environment, the rectal temperature is tested once every 10 minutes, the extreme difference of the rectal temperature values obtained by three times of continuous testing is smaller than the precision value of the testing instrument, the experimental personnel is considered to reach a balance state at the moment, the experimental personnel enters the next working condition to sit still according to the sequence of the working conditions, the testing sequence of the environmental working conditions is arranged from small to large according to the WBGT temperature, so that the trainer can test the rectal temperature once every 10 minutes from a neutral state to a high-temperature dry-hot state and then to a high-temperature high-humidity state, and the experimental personnel is considered to reach the balance state at the moment when the extreme difference of the rectal temperature values obtained by three times of continuous testing is smaller than the precision value of the testing instrument; under each working condition, when the range of the rectal temperature values obtained by continuous testing for three times is smaller than the precision value of the testing instrument, the three rectal temperature values are averaged to be used as the equilibrium state rectal temperature under the working condition;
smoothly connecting balance state points of each test working condition to form a curve by taking the WBGT index of each working condition as an abscissa and the rectal temperature of the balance state of each working condition as an ordinate, so as to obtain a state curve; comparing the curve obtained by the last test with the curve obtained by the current test, if the two curves are basically coincident, performing matched sample t test on the equilibrium state rectal temperature of each working condition point obtained by the current test and the equilibrium state rectal temperature of each working condition point obtained by the last test, and if the test results under all the working conditions show no significance, ending the thermal habituation training and indicating that a trainer forms a thermal habituation suit; otherwise, the hot habitual training is carried out again.
2. The method of claim 1, wherein in step 1, the experimenter is selected and asked to measure the heart rate and the blood pressure of the trainee in a sitting state, and if the heart rate of the trainee is less than 110b/min and the blood pressure is less than 140/90mmHg, 5-10 persons are selected as the experimenter.
3. The method of claim 1, wherein in step 2, the training for thermal habit formation is performed for 60-90 min per day, the training time per day is kept consistent, and the temperature and humidity for the training are kept consistent.
4. The method of claim 1, wherein the environmental parameters are converted to WBGT indices according to existing formulas or the environment is tested using a WBGT thermometer to obtain corresponding WBGT indices.
5. A method for rectal temperature based thermal habit determination according to claim 1 and wherein the significance level is given as α ═ 0.05 when the paired sample t test is performed.
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| CN105955356A (en) * | 2016-05-05 | 2016-09-21 | 华南理工大学 | Indoor environment control system and method based on human body heat acclimatization |
| WO2017109919A1 (en) * | 2015-12-24 | 2017-06-29 | 富士通株式会社 | Electronic device, wbgt determination method, and wbgt determination program |
| CN107049274A (en) * | 2017-02-28 | 2017-08-18 | 中国人民解放军军事医学科学院卫生学环境医学研究所 | Thermal environment self-employed labour safety monitoring assembly and evaluation method based on physiological parameter |
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| WO2017109919A1 (en) * | 2015-12-24 | 2017-06-29 | 富士通株式会社 | Electronic device, wbgt determination method, and wbgt determination program |
| CN105955356A (en) * | 2016-05-05 | 2016-09-21 | 华南理工大学 | Indoor environment control system and method based on human body heat acclimatization |
| CN107049274A (en) * | 2017-02-28 | 2017-08-18 | 中国人民解放军军事医学科学院卫生学环境医学研究所 | Thermal environment self-employed labour safety monitoring assembly and evaluation method based on physiological parameter |
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