Response refers to the ability of the human body to respond to various external stimulus signals. It is an important psychological characteristic of the human body and one of the main factors affecting human body's movement. Because the heritability during reaction is high, it is often used as a very important criterion in the selection of athletes in the confrontational event, and it is also a measure of human health [4].

The reaction time is also often used in physical fitness monitoring, drivers, pilots, shooting and other special professional personnel detection and testing. Therefore, how to measure the reaction objectively and accurately is a topic that the majority of sports and special professional workers are very concerned about.

One. Because of this, over the years, many physiological experts and sports researchers have conducted in-depth and detailed research on the evaluation method of reaction speed and achieved many gratifying results. Especially in the measurement method, electricity

High-tech processing technologies such as sub-automatic measurement technology and computerized data processing are applied to measurements when responding to humans. The measurement method and accuracy have been improved, and the measurement accuracy is getting higher and higher (the time has been accurate to 1/10,000 seconds).[5]

2. Research objects and methods

1. Research objects

The research object was 10 healthy male students from the School of Physical Education of Yangzhou University. They were all students of traditional ethnic sports who had been professional Tai Chi training for more than 3 years. The other 20 were non-professional fitness students in society. They had no sports contraindications and were able to learn and complete 42 styles of Tai Chi in a standardized manner and volunteered to participate in this experiment.

2. Research methods

(1) Documentation Method

A large amount of literature and related materials on reactions at home and abroad were reviewed, and theoretical discussions and practical analysis were conducted on this basis.

(2) Experimental method

According to the experimental requirements, firstly, when the reactions of 10 students from traditional majors who have been trained in Tai Chi system were measured, then when the reactions of 10 students from non-professional students were measured, a comparison and analysis was conducted. Secondly, the 42-style Tai Chi stipulated by the state was used to train 20 students from non-professional students in different intensities and exercises, a three-month training plan was formulated, and then the differences in their reactions were measured and the comparison and analysis was conducted.

(3) Mathematical Statistics

The experimental data were processed by the SPSS11.5 data software package, and the results were expressed as the mean ± standard deviation (M±SD). One-way variance analysis was performed between different groups of the same index. After the variance analysis was different, multiple comparisons of LSD were performed. P<0.05 indicates significant differences, P<0.01 indicates very significant differences, and P<0.001 indicates extremely significant differences.

(4) Logical analysis method

Analyze and discuss the survey and experimental results.

Three, research process

1. The basic situation of the subject

The subjects were healthy young men, age 22.30±1.49 years old. It can be seen from the basic morphological index data that all subjects were healthy adults with normal body fat percentage. Heart rate and blood pressure are the simplest indicators that reflect the function of the cardiovascular system. The subjects' weight, heart rate, blood pressure and other functional index data are all within the normal range. The sample meets the requirements of this experimental plan, as shown in Table 1:

Table 1 Subject morphology and physiological functional indicators

index

Mean ± standard deviation

Age (yr)

22.30±1.49

Height (cm)

172.05±3.48

Weight (kg)

66.56±5.39

Body mass index, BMI (kg/㎡)

22.51±1.45

Body fat % (Fat %)

18.88±4.12

Quiet heart rate, HRrest(bmp)

65.50±8.08

Maximum heart rate, HRmax(bmp)

180.80±6.94

Diastolic blood pressure (mmHg)

73.50±8.25

Systolic pressure (mmHg)

112.50±8.64

All data are tested using morphological indicators.

(1) Height (cm): The test instrument is a height measure.

Test method: The tester slides the horizontal pressure plate down along the column with one hand to the top of the subject's head, and records the displayed value after the value displayed on the display screen is stable. The record is in units of centimeters (cm) and is accurate to 2 decimal places.

(2) Weight (kg): The test instrument is an electronic weight scale. Test method: The subject stands naturally in the center of the weight scale plate to keep his body stable. After the value displayed on the display screen is stable, the tester records the displayed value. The record is in kilograms and is accurate to 2 decimal places.

(3) Body mass index (kg/㎡): BMI=weight/height square.

(4) Body fat % (Fat%): Fat % is measured by electrical impedance method.

2. Main instruments

The main instruments include: stopwatch, column type mercury blood pressure meter and medical stethoscope, electronic reaction time tester

3. Test method

(1) Preparation before the test

Test the total center of gravity of the human body

First, use the one-dimensional center of gravity plate method to test the total center of gravity of the human body. It mainly uses a pound scale and a wooden board. The center of gravity position is calculated by reading the scale. The actual calculation formula for the measured center of gravity is d=(R-0.5r)L/G. (Note d: the horizontal distance from the support point to the human center of gravity, R: the reading of the scale, r: the weight, L: the length of the board, G: the body weight), and then wear a black or blue elastic belt at the center of gravity position after calculating the center of gravity (the elastic belt can always be fixed at the center of gravity position during this exercise experiment). [3]

The tester was divided into elevated groups and low frame groups (Note: ① Elevated group (G): The center of gravity when the normal human body is standing is the standard, and then multiplied by the coefficient 0.97 as the center of gravity height of the elevated group. ② Low frame group (D): The center of gravity when the normal human body is standing is the standard, and then multiplied by the coefficient 0.81 as the center of gravity height of the low frame group). [5] During the test, the subjects were required to wear light-colored sportswear, and the orange-red marking belts were fixed at both ends of the height according to the experimental requirements and tightened. The marking belts were kept on the same horizontal line. It is required that the center of gravity fluctuations should not be too large when practicing Tai Chi, and try to control them within the specified center of gravity height range.

4. Experimental process

First, the 42-style Tai Chi is taught and practiced in segments, and the first section is taught and practiced in the first week. The movements include: 1, starting 2, right 3, left single whip 4, carry 5, white crane wings 6, knee-hugging step 7, body-swinging 8, stroke 9, progressive squeezing 10, like sealing and closing. The second section is taught and practiced in the second week, including 11, opening and closing hands 12, right single whip 13, elbow bottom whip 14, turn and push palm 15, jade girl shuttle 16, left and right feet 17, cover hand 18, and wild horse split mane. The third section is taught and practiced in the third week,

The middle movements include: 19, cloud hand 20, ** hitting the tiger 21, right foot 22, double peaks penetrate the ear 23, left foot 24, turn around and clap the feet 25, progressive pounding 26, slant flying 27, single whip downward 28, golden rooster **29, step backward trampling the palm. In the fourth week, the fourth section is taught and practiced, including: 30, empty step pressing the palm 31, ** support the palm 32, horse step 33, turn around and stroke 34, stop step grab 35, pass the palm downward 36, upper step seven stars 37, step backward trampling 38, turn around and swing the lotus 39, bend the bow and shoot the tiger 40, left embrace the bird tail 41, cross hand 42, and close the momentum.

Correct wrong movements from the fifth to the sixth week and practice the entire set of Tai Chi movements with 42 styles of Tai Chi, analyze the techniques and relaxation and coherence methods of the movements, and evaluate and score the students' movements. The test score is 10 points

Scoring to promote students' enthusiasm for practicing Tai Chi. The theory of Tai Chi is explained from the seventh week, and students can guide their practice through theory, guide various postures of the body, and achieve relaxation and coordination

The purpose of nature. Between the fifth and twelfth weeks, students with low-intensity elevated strength will be trained for studs and shaking. After each forty-two-style Tai Chi training, each set will be practiced for 20 minutes, with specific studs and shaking.

The training arrangements include Wuji pile work, Taiji pile work, single-type fixed pile and single-type elastic and shake force.

4. Results and Analysis

1. Comparative analysis of responses to students and ordinary practitioners of traditional national sports

First, students and ordinary exercisers of national traditional sports were measured during basic reactions, original data were recorded, 300 sets of data were screened for analysis, their average values ​​were found for analysis of variance, and comparison.

Table 2 Comparison of reactions between majors and non-professionals

Group/value

Sample size

Mean

Standard deviation

P value

Civilian Education Major

300

0.452

0.007

0.001

Social Student

300

0.699

0.337

The results show that the ten subjects of national traditional sports responded significantly smaller than those of ordinary trainees who had not been trained, indicating that their reaction speed was faster. The P < 0.01 indicates that there is a significant difference in professional training and amateur training. In addition, the study also found that students of national traditional sports responded for a long time.

2. Comparative analysis of the changes in the center rate of the two boxing movements of elevated and low frames

Heart rate (HR) is a basic indicator that reflects the cardiovascular system and a physiological load indicator that reflects the intensity of exercise. It is generally believed that there is a linear relationship between intensity and heart rate. The POLAR table is usually used to measure HR during exercise. For small-intensity exercise, the heart rate is below 130bpm, and 5-10 minutes after exercise can be restored to the pre-exercise level; after moderate-intensity exercise, the heart rate is between 130-160bpm, and 5-10 minutes after exercise can be slightly faster than the HR before exercise 10-30bpm; after large-intensity exercise, the HR is between 160-200bpm, and 5-10 minutes after exercise can be 30-50bpm more than the HR before exercise [9].

Table 3 Comparative analysis of HR in the two types of Tai Chi boxing process (N=number of people)

index

Low frame is higher than elevated frame (%)

Minimum heart rate (bpm)

26.3

Maximum heart rate (bpm)

20.5
To be continued...