Table of Content

15 July 2019, Volume 45 Issue 4 Previous Issue    Next Issue

SPECIAL CONTRIBUTIONS

Select

Deconstruction of the Origin and Current Situation of "Academic School" of Sports Economicsin China: On the High Quality Development of Sports Industry in China CHENG Linlin, LI Qinyu, CHEN Ou 2019, 45 (4):  1-7.  doi: 10.15942/j.jcsu.2019.04.001 Abstract ( 4548 )   PDF (1166KB) ( 1943 )   Save The existence of academic schools reflects the participation, activity and maturity of academic research in specific disciplines. Based on literature review, this paper probes into the theoretical basis, motivation, process, influence and role of the academic schools of sports economics in China. The findings are as follows: 1. Sports economics belongs to applied economics rather than sports science; 2. The infiltration and acceptance of economic thoughts are the incentives for the formation of sports economics academic schools; 3. Sports industry is a reflection of sports economic laws in practice; 4. The high-quality development of sports industry requires new perspectives and ideas. Related Articles | Metrics

Select

Structural Upgrading and Policy Optimization inHigh Quality Development of Sports Industry in China CHEN Linhui 2019, 45 (4):  8-14.  doi: 10.15942/j.jcsu.2019.04.002 Abstract ( 3315 )   PDF (1150KB) ( 1320 )   Save The transformation and upgrading of industrial structure is the key issue in developing sports industry in China. In view of industrial development dilemmas such as low level of modernization of industrial system, slow evolution of industrial structure optimization, unreasonable external structure, and severe path dependence, it is of great theoretical and practical significance to analyze the transformation and upgrading of industrial structure and promote the high-quality development of China's sports industry. Aiming at meeting the diversified social needs, high-quality development of sports industry in China should be driven by innovation. To optimize the structure of sports industry, measures to be taken include: allocate sports industry resources through market mechanism, reform sports industry development system mechanism, optimize sports industry policy, and change the concept and mentality to cultivate industrial development atmosphere. Related Articles | Metrics

Select

Research on Organizational Innovation and Layout Optimization of High Quality Development of Sports Industry in China SONG Yu 2019, 45 (4):  15-22.  doi: 10.15942/j.jcsu.2019.04.003 Abstract ( 2878 )   PDF (1173KB) ( 973 )   Save Through the methods of documentation, expert interview and case analysis, the paper takes the first China International Import Trade Fair as a starting point to carry out a comprehensive study on the organization and planning of the high quality development of China's sports industry in the context of further promoting the development of the "one belt and one road" initiative and free trade area (port). From the dual perspective of organizational innovation and optimization, this paper analyses and reconstructs the organizational and layout basis for the high-quality development of sports industry. In the past five years, the development speed of sports industry in China has been accelerating continuously, and the effect of open development and gradual gradient growth has initially appeared. However, there are still various problems and shortcomings in the organization development and scientific layout of sports industry. By consulting and sorting out the relevant literature and latest data on the organization and layout of high-quality development of sports industry at home and abroad, this present paper reviews and analyzes the experience and problems in organization and layout development of sports industry in China, and theoretically explores new ideas on the organizational innovation and layout optimization for high-quality development of sports industry in China and provides strategies and suggestions accordingly. Related Articles | Metrics

SPORTS SOCIAL SCIENCE

Select

Value Analysis of Sports Industry Policy: A Perspective of National Governance CHEN Xiaofeng 2019, 45 (4):  23-28.  doi: 10.15942/j.jcsu.2019.04.004 Abstract ( 1194 )   PDF (1132KB) ( 793 )   Save This paper analyzes the historical change of Chinese sports industry policy, i.e. the transformation from sport control by omnipotent government after the founding of People's Republic of China through the subsequent commissioning reform to the multi-interactive governance. On this basis, the paper conducts a normative discussion and defines the triple value connotation of Chinese sports industrial policy, i.e. the value connotation of sports policy respectively as public policy, government-led industry in international competition, and sports industry policy in the context of national governance. To improve and optimize the policy system of Chinese sports industry, it is necessary to improve the national policy supply capacity, incorporate multi-subjects into the governance framework, and build an industrial structure of multi-governance and coordinated development through continuously enhancing the guiding value, incentive value, integration value, normative value and feedback value of sports industry policies Related Articles | Metrics

Select

Research on the Entrusted Management Contract of Public Sports Venues and Stadiums JI Qing, CHEN Yuanxin 2019, 45 (4):  29-35.  doi: 10.15942/j.jcsu.2019.04.005 Abstract ( 3108 )   PDF (1149KB) ( 941 )   Save This present paper studies the entrusted management service contract of public sports venues and stadiums by means of contrastive analysis, questionnaire survey, investigation and interview. The study shows that there are various forms of entrusted service contract in China and the contracts are civil in nature. However, owing to the particularity of the entrusted operation of venues and stadiums, the contracts have the characteristic of administrative contract. Based on the analysis of the core provisions in the contracts and the results of investigation and interview, this paper concludes that currently entrusted management contracts have such problems as lack of public interest, public sports service provisions are not accurate, business operation requirements are not clear, service fee payment doesn’t have any audit basis, service period is too long, the access and exit mechanism are not clear. Finally, this paper puts forward some suggestions and measures for improvement including: formulating model contracts, refining core provisions, strengthening government regulation, improving assessment system, carrying out surveys of satisfaction and service needs, establishing negative list system, completing asset inventory and force majeure regulations. Related Articles | Metrics

Select

Research on the Normalization of China's Counterpart Sports Assistance under the Benefit Compensation Mechanism A Yingga, HU Yan, JIN Yuefeng, WU Xiangzhi 2019, 45 (4):  36-39.  doi: 10.15942/j.jcsu.2019.04.006 Abstract ( 1822 )   PDF (1083KB) ( 532 )   Save Based on the analysis of the current situation of counterpart sports assistance in China by means of literature, expert interviews, field study, the present paper explores the principles and programs for China's counterpart sports assistance under the benefit compensation mechanism. It is found that the benefit compensation mechanism plays an important role in eliminating the donors’ fatigue, promoting receivers’ ideological transformation and increasing the life span of the aid materials in the normalization of sports assistance. Counterpart sports assistance in China should follow the principles of reproduction, appropriateness, fairness and efficiency, advancing step by step, and differentiated treatment. Indirect compensation method can be adopted in a proper way. Under the benefit compensation mechanism, China's counterpart sports assistance can be advanced by strengthening policy support, speeding up the construction of compensation mechanism with benefit compensation fund as its core, and strengthening the construction of sports aiders’ reproductive capacity. Related Articles | Metrics

Select

Theoretical Model Exploration and Application Research on the Analysis and Evaluation of Sports Goods Brand Image JIANG liang, XIE Mingzheng , ZOU Juanhua, LI Hongjun, CHANG Shengliang, ZHANG Yubao 2019, 45 (4):  40-46.  doi: 10.15942/j.jcsu.2019.04.007 Abstract ( 2427 )   PDF (1492KB) ( 1058 )   Save This article takes the brand image of sports goods as the research subject to explore through the methods of literature, expert interviews, case analysis, induction and deduction the theoretical model of brand image analysis and evaluation and its application to the brand images of typical sports goods. The results show that: (1) the essence of branding is to create an excellent brand image in the consumer-centered brand network. (2) brand image consists of brand culture, brand product, brand communication and brand evaluation, and they further consist of 12 elements, i.e (founder, name, logo, concept), (new materials, new technologies,new designs), (advertising, sponsorship, public relations), and (customers, markets). (3)There are significant differences between domestic sports goods and international sports goods in brand image, which are reflected in two aspects: inadequate brand supports and weak supporting point. Based on the theoretical model of brand image analysis and evaluation, this paper compares the brand images of Lining and Anta and those of Nike and Adidas, trying to explore the reason behind the differences in brand image formation, .it is hoped that this current study can provide a theoretical reference for the promotion of China's sports goods brand image. Related Articles | Metrics

Select

The Temporal-Spatial Characteristics and Spatial Agglomeration Effect of Coordinated Development of National Fitness and Green Ecology in China ——Based on Coordination Degree of Provincial Date (2011-2015) DONG Delong, YU Yongping, LIANG Hongmei 2019, 45 (4):  47-53.  doi: 10.15942/j.jcsu.2019.04.008 Abstract ( 2593 )   PDF (1655KB) ( 694 )   Save In order to promote the implementation of the concept of green sports space construction and realize the coordinated development of national fitness and green ecology, this article analyzes through entropy weight evaluation, coordination degree model (D index), Moran's I index and Markov chain the temporal-spatial characteristics, agglomeration effects and evolution mode of coordinated development of national fitness and green ecology in 31 provinces (2011-2015). The results show that (1) the coordination degree of national fitness service and green ecology presents four types: low-level coordination (I), barely qualified coordination (II), primary coordination (III) and intermediate coordination (IV); (2) the coordination degree of national fitness service and green ecology evolved in a wave shape over the years with significant differences between different provinces (D=0.05 ~ 0.80) and significant differences between the western, central and eastern regions (p﹤0.05); (3) there is a regional spatial correlation in spatial coordination of national fitness service and green ecology, while the spatial agglomeration effect is not significant (only 4 provinces reach the H-H type). Conclusion: (1) national fitness and green ecology in China don't present coordinated development trend and green sports spaces in provinces have no strong link so far; (2) strengthening the construction of green sports space, especially that of green sports space in urban areas is an important way to expand people's participation; (3) planning urban green space and installing fitness facilities are an important measure to transform the evolution mode of national fitness and green ecology. Related Articles | Metrics

Select

Reflection on the Missing Subject in the Inheritance and Protection of National Traditional Sports LIU Hezhi 2019, 45 (4):  54-59.  doi: 10.15942/j.jcsu.2019.04.009 Abstract ( 3006 )   PDF (1135KB) ( 980 )   Save With the rapid advancement of globalization in the 21st century, the inheritance and protection of traditional sport, part of traditional culture, have drawn extensive attention from government departments, social organizations, and scientific research institutions. People of different nationalities, who are both the creators and owners of culture, have failed to play their due role in the cultural inheritance and protection of traditional sports, thus losing their proper position. The missing subject is a result of the changes in people's lifestyles in the new era. The protection of the external power-based object is likely to cause cultural misreading, and be easily influenced by policies and economy. Thus resuming the status of cultural subject has become a prerequisite for the sustainable development of traditional national sports in the new era. Returning to the daily life of cultural subject and satisfying the realistic needs of their survival and development are the fundamental way to realize the sustainable development of traditional national sports. Related Articles | Metrics

Select

Overseas Chinese and the Development of Sports in Modern Xiamen BI Jinze, LIN Zhicheng 2019, 45 (4):  60-64.  doi: 10.15942/j.jcsu.2019.04.010 Abstract ( 1417 )   PDF (1120KB) ( 819 )   Save Based on the materials related to overseas Chinese and sports in modern Xiamen, this paper investigates by means of document and logical analysis the practice and contribution of overseas Chinese in spreading traditional Chinese sports, introducing western sports and promoting the overall development of sports in Xiamen in modern times. This findings show that: spreading traditional Chinese sports is an important means to enhance overseas Chinese's national feeling as well as an embodiment of their national identity; the spread of modern sports in Xiamen stimulated Xiamen athletes' enthusiasm of participating in international sports games, thus constructing China's sports image in modern times; the sports events that overseas Chinese promoted were important platforms for sports communications between Xiamen and other parts of the world, thus promoting the cross-strait exchanges and cooperation. Related Articles | Metrics

PHYSICAL EDUCATION AND TRAINING

Select

Visualization Analysis on Passing Technique of Spanish Tiki-Taka Tactics Based on Social Network Analysis Method Cao Weihua 2019, 45 (4):  65-72.  doi: 10.15942/j.jcsu.2019.04.011 Abstract ( 2514 )   PDF (1675KB) ( 1248 )   Save Objective: To explore the characteristics and laws of Tiki-Taka tactics in Spain. Methods: Make visual analysis of the passing data of Spanish team in 2016 European Cup and 2014 World Cup by means of video observation and social network analysis. Results: The overall passing network of the Spanish team is composed of three circles: the network center, the middle and the edge. The core of the transmission and control is mainly composed of the middle and back field players; the network connection and the thickness show that the Spanish team passes the ball in a fixed small group. Having a higher network density and better network distance, the Spanish players can pass the ball more closely, frequently, and smoothly; the local network analysis shows that the core-edge structure of pass network is more reasonable, The left side of the middle-rear field and the right side of the middle-front field are the core areas of ball control; the separate network analysis shows that players with higher centrality in Spanish team are vanguards and backs. Conclusion: Intricate pass and control are the core idea of Tiki-Taka tactics, which stress the control of midfield. The stable offensive and defensive system in midfield and backfield provide strong support for the tactics; high- level personal pass and control are the basis of Tiki-Taka tactics, and high ball control rate is a remarkable characteristic of the tactics. Ball control features medium- and short-distance pass penetration, and the tactical purpose is achieved by circle-by-circle advancement. Related Articles | Metrics

Select

Scientific Research Paradigm of Modern Sports Training: Features and Limitation YANG Chengbo 2019, 45 (4):  73-78.  doi: 10.15942/j.jcsu.2019.04.012 Abstract ( 2647 )   PDF (1166KB) ( 1100 )   Save In recent years, On the basis of modern scientific epistemology and methodology, the scientific research paradigm of sports training is declining in the face of the complexity problems that are constantly emerging in the process of practice. To explore its causes, this paper attempts to sort out the characteristics of modern sports training scientific research paradigm, It also discusses the limitations of the modern sports training scientific research paradigm in the application of theoretical research and guidance training practice, and then provides ideas for the transformation of the scientific research paradigm of sports training. Related Articles | Metrics

Select

Kinematics Analysis on the Curve Technique of Short Track Speed Skating Olympic Champion Wu Dajing in 500 m WANG Shuai, ZHOU Jihe 2019, 45 (4):  79-84.  doi: 10.15942/j.jcsu.2019.04.013 Abstract ( 3141 )   PDF (1596KB) ( 789 )   Save The curve technique is one of the most important movements of the short track speed skating technique and plays a vital role in the whole process of the competition and can improve the athletes' performance. The average speed of an excellent short track speed skaters is above 13 m/s and the speed in the curve is greater than the straight.Compared with the straight technology,the curve technology has to overcome the inertia of the human body, therefore, in order to has a better understanding of the technical and tactics of the curve, we analysis the competition of Wu Dajing at the 2017/18 ISU World Cup Short Track(Shanghai), the results show that :(1)During the curve the athlete did not gliding close to the track, but take the sliding mode of the big turning radius, Wu Dajing's radius is 11.41 m, so the actual sliding distance is greater than the specified distance of the game;(2) After entering the curve, the athlete's body must be introverted, when the internal inclination angle is 39.85°, Wu Dajing’s left hand touched the ice surface, thereby increase the stability of the human body and maintain the balance of the body. The minimum introversion angle is 25.84°, indicating that he has good ability of body tilt and balance ;(3)The alternating of pedal ice of the left and right legs makes the torso angle change slightly, compared with the excellent female short track speed skater, Wu Dajing’s torso angle is more reasonable. Because he always be the leader in the competition, to has the proper reduction of the trunk is needed to reduce the air and it’s an effective method to save physical energy;(4)Wu Dajing's hip joint angle is small at the time of touch ice (the torso angle is small), and the air resistance is reduced. The double support phase is the acceleration phase, while the single support phase is the deceleration phase, which is consistent with the excellent athletes' sliding mode at home and abroad ;(5) Wu Dajing's minimum ice angle appears at the end of the single support phase; the height of the center of gravity from the curve to the top of the arc is continuously decreasing; the time of the double support phase is less than the time of the single support phase, and the right single support phase is longer than the left single support phase. Related Articles | Metrics

Select

A Study on the Correlation between Special Physical Fitness of Chinese Men's Sprint Reserve Talents and Their 100 M Performance CHEN Wenjia, ZHANG Biyu, ZHANG Jianhu 2019, 45 (4):  85-90.  doi: 10.15942/j.jcsu.2019.04.014 Abstract ( 2531 )   PDF (1378KB) ( 900 )   Save Objective: To explore the correlation between special physical fitness and 100 M performance of 159 male sprinters in the Olympic high-level reserve talent base, who were in Group A (12~13 years old), Group B(14~15 years old) and Group C(16~17 years old) , to provide reference for the selection and training of men's sprint reserve talents in China. Results: (1) In the order of grey relation between first-grade physical fitness index and 100 M performance, all the three groups presented the sequence of body shape > body quality > physiological function; (2) Body shape indicators having a greater influence on 100 M performance are mainly congenital physical limitation factors (height, length of lower limbs, body composition) which are used to complete the technical movement structure of high-speed running; Physiological function indicators are mainly energy metabolism indicators (hemoglobin) and hormone indicators (serum testosterone); Physical fitness indicators are mainly acceleration ability (30 M), absolute speed (60 M), speed endurance (150 M), lower limb reaction strength (CMJ impulse, DJ impulse, CMJ altitude); (3) Coaches and scientific researchers should pay attention to the test and training of young sprinters' acceleration ability, maximum speed ability, speed endurance and lower limb reaction strength quality. During the "sensitive period", they should pay attention to the balanced development and transformation of muscle contraction speed and strength quality, to cultivate special physical quality ability while giving consideration to the improvement of indirect physical quality. Related Articles | Metrics

PHYSICAL EDUCATION AND TRAINING◇PHYSICAL EDUCATION

Select

Research on The Fracture and Connection of Physical Education Curriculum in Primary School, Middle School and University (2) YANG Dongya, LUO Shuaicheng, MAO Zhenming 2019, 45 (4):  91-97.  doi: 10.15942/j.jcsu.2019.04.015 Abstract ( 2092 )   PDF (1251KB) ( 1337 )   Save "We learned crouching start in primary school, and keep learning it at university, we forward roll from primary school to university" is seemingly students' scorn but more of a complaint. Physical education teachers also complain to each other, putting the designers of school physical education curriculum extremely in embarrassment. These problems, together with the complaint that "we have learned nothing in physical education curriculum for 12 years", question the logic and scientificalness of physical education curriculum, as well as the qualification of physical education as a subject. After analyzing and expounding the purpose of "lifelong sport", the problem of students' "low-level repetition and giving up halfway" in current physical education curriculum, and the purpose, focus and characteristics of physical education connection, this present paper proposes that the strategy for effective physical education connection is "establishing the personalized, selective and professional physical education curriculum system", and the method to realize the connection is "establishing the selective and specialized teaching system for each learning stage". This paper then discusses the feasibility of the hypothesis in theory by analyzing the possible results that the hypothesis may bring about. Besides, this paper also analyzes its feasibility based on the experience of "module teaching" in high school and "three independences teaching" in university, which have been implemented for more than a decade. Related Articles | Metrics

Select

The Evolution, Characteristics and Enlightenment of the Pre-Service PE Teacher Education System in China WANG Jian, TANG Yan 2019, 45 (4):  98-104.  doi: 10.15942/j.jcsu.2019.04.016 Abstract ( 2104 )   PDF (1163KB) ( 960 )   Save Based on relevant literature, this present paper conducts by means of literature and expert interview a historical survey of the experience and characteristics of the evolution of pre-service PE teacher education system in China. This paper argues that the process of “transplant and imitation —learning for reference — self-dependent innovation” is the main path of the evolution; the transition from the tool-centered to teacher-centered principle is its value tendency; the reform on the curriculum system of PE teacher education is the center; the reforms on social politics and on teacher education & school education are the main external incentives for the development. Even though the reform on pre-service PE teacher education is dependent on the reforms on teacher education and school sports, it has its own logical principles. This research concludes that the reform on PE teacher education system in modern times should take teacher-centered value judgment as its guide, put emphasis on the construction of “self-organization”, follow the rule of meeting the country’s demand for sports teachers, and take the construction of pre-service PE teacher education system with Chinese characteristics as its ultimate goal. Related Articles | Metrics

SPORTS SCIENCE OF HUMAN BODY

Select

Relationship of Muscle Oxygen Saturation, Heart Rate and Blood Lactate during High- intensity Interval Training Recovery Period BI Xuecui, ZHAN Jianguo 2019, 45 (4):  105-112.  doi: 10.15942/j.jcsu.2019.04.017 Abstract ( 1712 )   PDF (1474KB) ( 1136 )   Save Objective: To analyze the relationship between SMO2 and HR and BLA during recovery after high-intensity interval training so as to explore the relationship between SMO2 and HR and BLA during recovery after high-intensity interval training and provide a better application of SMO2 indicator to monitor and evaluate the recovery of human body after high-intensity interval training. Methods: Fifty male students (age 21.65 ± 1.04 yrs; height 174.95 ± 5.47 cm; weight 73.35 ± 7.5 kg) were selected as the test subjects to complete 3x30s full-strength high-intensity interval trainings, and their SMO2 and HR, BLA indicators were collected during exercise and 20 min after exercise. Using SPSS 21.0 statistical software for data analysis, and using the variance analysis of repeated measurements to do the variance test of HR, BLA and SMO2 at different time points. Using Pearson correlation analysis for the correlation analysis between MO2 and HR and BLA during recovery. Result: After high-intensity interval training, SMO2 recovery rate reached 100% at 35 s, the recovery showed a sharp rise in a short period of time, followed by the time-phase characteristic of "excessive recovery"; HR recovery presents the time-phase characteristic of being fast at first and then slowing down. The changes of HR and SMO2 were highly correlated within 1 min, then the correlation decreased gradually. There was no correlation between the changes of HR and SMO2 after 15 min. The concentration of BLA showed the characteristic of increasing first and then decreasing. It reached the peak value in 3 min, then decreased slowly. The change of BLA and that of SMO2 were basically not related during the 20 min recovery period. Conclusion: After high-intensity interval training, the recovery of SMO2, HR and BLA present metachronous feature. The recovery rate of SMO2 is the fastest, followed by HR, and the slowest is BLA. After high-intensity interval exercise, the recovery rate of SMO2, HR and BLA reflects the various aspects of the overall aerobic capacity of the organism, and they interact with and promote each other. Related Articles | Metrics

Select

Study on the Relationship of Built-in Environmental factors to Outdoor Physical Activity and Sedentary Time of The Elderly in Urban Areas SONG Yanliqing, WANG Zhuying 2019, 45 (4):  113-120.  doi: 10.15942/j.jcsu.2019.04.018 Abstract ( 1758 )   PDF (1281KB) ( 788 )   Save Objective: Study on the relationship of built-in environmental factors to outdoor physical activity and sedentary time in urban elderly. Methods: 586 urban elderly of over 60 years old (male 258, female 328) wore Actigraph accelerometer for 4 days and their high intensity outdoor physical activity and sedentary time were measured by the GIS technology on 9 built-in environmental indexes including population density, building density, street connectivity, total road length per capita, mixed utilization of land, number of traffic stations, distance to traffic station, distance to fitness and leisure place, distance to business place within 1 km buffer zone to the family address of effective sample population. The variables were then divided into the three levels of 1, 2 and 3 according to the two percentiles of 33 and 66, and the demographic variables were integrated into the logistic model as control variables. Results: As the mixed utilization of land decreases from one level to the next, the estimated coefficient β of the change in outdoor physical activity level is 1.122,P=0.016 and 0.762,P=0.036 respectively, and the estimated coefficient of change in the number of traffic stations from level 1 to level 3 is 0.720,P=0.029. The estimated coefficient of change in distance to traffic station from level 2 to level 3 is 0.769, P=0.049. There is no correlation between other built-in environmental factors and the outdoor physical activity of the elderly. As the population density decreases by one level, the estimated coefficient β of the sedentary time is 0.745, P=0.004 and 0.751, P=0.014 respectively, and the estimated coefficient of change in the total road length per capita from level 2 to level 3 is 0.926 and P=0.029. There is no correlation between other built-in environmental factors and the sedentary time of the elderly. Conclusion: The built-in environmental factors affecting the daily physical activity of the elderly are: mixed utility of land, distance to the fitness place, number of traffic stations, and distance to the traffic station. The built-in environmental factors that affect the elderly's daily sedentary time are: population density and total road length per capita. Therefore, when the planning departments redesign the planning policy, they can improve the daily physical activity of the elderly, change the sedentary lifestyle and improve their health level in the coming aging society of China by coping with the above-mentioned built-in environmental factors. Related Articles | Metrics

Select

Effect of 8-Week Swimming Exercise on Autophagy in Rats with Insulin Resistance Induced by High-Fat Diet LI En, YE Kui, SUN Junzhi, SU Quansheng 2019, 45 (4):  121-126.  doi: 10.15942/j.jcsu.2019.04.019 Abstract ( 974 )   PDF (1384KB) ( 618 )   Save Objective: To explore the effect of aerobic exercise on the changes of autophagy in skeletal muscle cells in rats with insulin resistance and the expression of autophagy-related protein. Methods: Thirty-six male SD rats were randomly divided into three groups: Normal Diet group (ND, n=12), High Fat Diet group (HFD, n=12) and High Fat Diet + Exercise intervention group (HFD + EXE, n=12). Rats of HFD and HFD + EXE group were fed high fat diet in the whole experiment. Swimming was used for aerobic exercise intervention, 60min per day, six days per week, and the intervention lasted 8 weeks. The autophagosome was observed by transmission electron microscope in gastrocnemius muscle, and the expression of LC3-I、LC3-II、LC3-II/LC3-I and Beclin-1 were tested by Western blot. Results: Compared with ND group, fasting blood glucose and HOMA-IR of HFD group increased significantly. After exercise intervention, both the FBG and HOMA-IR in HFD+EXE group had a downward trend. In the ultrastructure, the mitochondria of the HFD group showed obvious damage, and some mitochondria were vacuoles. Conclusion: Aerobic exercise can increase the autophagy level of skeletal muscle cells of insulin resistance rats induced by high-fat diet, and protect skeletal muscle cells. Mitochondrial injury in HFD+EXE group was significantly improved, but no autophagy was found in each group. Compared with ND group, LC3-II, Beclin1 and LC3-II/LC3-I in HFD group decreased significantly. The tendency of LC3-II, LC3-II/LC3-I and Beclin1 increased after exercise intervention. Related Articles | Metrics