As can be seen from the table 1, 19.3% of college students often take part in physical exercise, 59.0% of college students sometimes take part in physical exercise, and 2 1.7% of college students occasionally take part in physical exercise. The similar results are as follows: 7 universities in Tianjin 12.3% students insist on physical exercise, 65.9% students sometimes take part in physical exercise, while 210.8% students never take part in physical exercise; 22.2% of college students in Changchun often exercise, 60.0% sometimes exercise, 17.8% hardly exercise. The main factors affecting college students' participation in physical exercise are school sports, sports atmosphere and the implementation of policies and regulations. First of all, at present, the phenomenon of "exam-oriented education" in school physical education is very prominent, and teaching revolves around the exam circle and teaches for the exam. Physical exercise only pursues immediate and short-term benefits, such as passing the physical examination, reaching the standard of physical education, and getting extra points in the senior high school entrance examination, while ignoring the sports qualities that can benefit students, such as sports literacy, sports awareness, interests, habits and skills. Secondly, as an external stimulus, the atmosphere and emotional appeal of people around them participating in sports activities have an important influence on the behavior of college students participating in physical exercise. It is the school "sports group" that has a great influence on college students' participation in extracurricular physical exercise. Through the investigation of the present situation of college students' extracurricular physical exercise, it is found that college students' extracurricular physical activities mainly depend on their spontaneous organization. This kind of activity and organization is not conducive to the utilization of school resources and the scientific guidance and development of physical education in colleges and universities. Therefore, in order to improve the participation rate and quality of college students' physical exercise, we must promote the development of "sports associations" in colleges and create a good exercise environment for college students. Finally, although the education administrative department has always attached great importance to school physical education, it has stipulated students' physical activities in different legal forms many times. The State Council 1990 approved the promulgation of the "School Physical Education Regulations" clearly pointed out: "To ensure that students have 1 hour of physical activity time every day (including physical education class). 1995 On June 23, the State Sports Commission issued the National Fitness Project, emphasizing that schools should ensure that students have one hour of physical activity every day, organize students to go hiking and camping twice a year, and conduct a physical examination once a year. 1995 promulgated the "sports law of the people's Republic of China" also clearly stipulates that schools should organize various forms of extracurricular activities and carry out extracurricular training and competitions.
1June, 1999, the Decision of the State Council Central Committee on Deepening Education Reform and Promoting Quality Education in an All-round Way clearly pointed out: "School education should establish the guiding ideology of health first and earnestly strengthen physical education." However, at present, there are still some problems in the field of school physical education in China, such as non-compliance with laws and lax enforcement. Therefore, if we want to implement sports policies and regulations, we must rely on legal supervision, the attention of school leaders and teachers, and effective publicity and guidance.
4 Investigation results and analysis of college students' physical health grade
As can be seen from the table 1, the overall unqualified rate of college students' physical health is 1%, the passing rate is 3 1%, the good rate is 5 1%, and the excellent rate is 17%. The qualified rate reached the estimated value of the Ministry of Education (98%), among which the qualified rate exceeded the estimated value of the Ministry of Education (23%) by 8 percentage points, the excellent and good rate exceeded the estimated value of the Ministry of Education (50%) 1 percentage point, and the excellent and good rate was 8 percentage points lower than the estimated value of the Ministry of Education (25%). It can be seen that the physical health of college students is not optimistic. Similar research results are as follows: "The unqualified rate of college students' physical health in Hubei Province is 2. 17%, the passing rate is 37.2 1%, the good rate is 47.29%, and the excellent rate is 13.27%" (Wu Jianxi, Chen Wei, Zeng Ji, etc. ); "The unqualified rate of college students' physical health in Liaoning Province is 10.25%, the passing rate is 58.68%, the good rate is 2 1. 13%, and the excellent rate is 9.94%" (Liu He, Sun Derui, Gao Tingxin, etc. ); "The failing rate of Fudan University and Peking University students' physical health is 1.45% and 0.2% respectively, the passing rate is 2O.57%% and 28.7% respectively, the excellent rate is 5 1.95% and 5O.5% respectively, and the excellent rate is 26.02% and 20.6% respectively" (. There are many factors that affect college students' physical health: firstly, lack of exercise is the most important factor recognized by academic circles at present; Secondly, the diet is unreasonable, some college students have too much calories and fat, and some college students have insufficient nutrition intake, so it is difficult to lose weight; Third, the influence of unhealthy lifestyle factors such as skipping breakfast, excessive internet access, smoking and drinking.
5 the results and analysis of the correlation between college students' physical exercise style and physical health
As can be seen from Table 2, there is a very significant correlation between college students' physical exercise style and physical health. The excellent and good rate of physical health of college students who often participate in exercise is higher than that of college students who occasionally exercise, and the exercise effect is remarkable. ""Exercise at least three times a week. If it is less than three times a week, the effect will not be significant. The effect of continuous whole-body exercise (endurance exercise) is related to frequency. The more frequencies, the greater the gain. "
Why do college students who often take part in exercise have a higher rate of excellent physical health than those who occasionally take part in exercise? Because physical exercise can have a comprehensive effect on college students' physiology, psychology and society. First of all, physical exercise can improve the physiological function of college students: physical exercise can improve the function of the human nervous system, including improving the balance and flexibility of nerve processes, enabling the human body to adapt to changes in the external environment, improving the adjustment ability of the central nervous system to internal organs, and enhancing people's physique and health level; Physical exercise can improve the function of human cardiovascular system, including improving the metabolic process of substances in the body, reducing the deposition of lipids on the blood vessel wall, and maintaining and enhancing the elasticity of the blood vessel wall; Physical exercise can enhance the function of human respiratory system, increase the number of breaths, deepen breathing and greatly increase lung ventilation; Physical exercise can enhance the function of human sports system, including increasing bone density, thickening bone wall, making cancellous bones orderly arranged and prolonging ossification time, thus enhancing the compression and torsion resistance of bones, enhancing muscle strength, making joints flexible and firm, and making people strong and fit; Physical exercise can promote digestion and absorption, make nutrient absorption more thorough and metabolic exclusion cleaner; Physical exercise can make endocrine activities more vigorous.
Secondly, Taylor (1985) found that physical exercise can increase or improve academic performance, self-confidence, emotional stability, independence, internal control tendency of locus of control, good mood, perceptual ability, body image and sense of physical ability; According to the research report of Berber (1993), exercisers who often engage in moderate-intensity activities (60%-75% of HRn~ax) can improve their mood by exercising for 20-60 min at a time. McDonald & Hodgson (199 1) studied the relationship between aerobic exercise and idiosyncratic personality, and found that aerobic exercise has a positive effect on personality and evaluation. Finally, sports can also improve the mental outlook of college students. It is beneficial for college students to form a long-term, systematic and unremitting pursuit of values and establish a healthy, scientific and civilized lifestyle.
6 Conclusions and recommendations
1) There is a significant correlation between college students' physical exercise style and physical health. The excellent rate of physical health of college students who exercise regularly is higher than that of college students who exercise occasionally.
2) It is suggested to implement intervention strategies for students' physical exercise. Strictly implement the "School Physical Education Regulations", formulate stricter implementation rules, make it clear that principals are the first responsible person for students' physical health, implement the "sports-centered health management model" for principals in rotation, and evaluate their health management performance.
The administrative department of education should urge schools to establish the educational concept of "training: attaching importance to students' physical exercise habits" and implement three assessments for school physical education: exercise participation rate, exercise habit consolidation rate and improvement rate of physical health indicators. Finishing paper net: www.bfblw.com