Sport plays a unique role in promoting cultural exchange and mutual learning, and is an important field for implementing the Global Civilization Initiative. Therefore, based on the longitudinal tracing of the concept of"civilization" and the horizontal network of the concept of "sport civilization", this study analyzes the basic concepts of "mutual learning", "civilization mutual learning" and "mutual learning in sport civilization". Through the practice of "mutual learning in sport civilization" based on typical cases, it clarifies the connotation essence of"mutual learning in sport civilization". On this basis, the logical pathways for the establishment of "mutual learning in sport civilization" is analyzed and revealed from three dimensions: premise, foundation and conditions. The proposition includes breaking down the stereotype of civilization comparison through civilization equality, dissolving civilization barriers through civilization dialogue, and transcending civilization conflicts through civilization exchanges.

Efficient and flexible social mobilization is an important prerequisite for stimulating the realization of multiple values of mega sporting events. Therefore, it is of great significance to construct a reasonable and effective mobilization framework for sporting events by analyzing the information flow and internal law of multiple-type mobilization issues of sporting events in social communication, in order to promote the value-carrying and social cohesion capacity of mega sporting events in China. By selecting four mega sporting events between 2021 and 2023 as the research objects, the study uses complex network modeling to differentiate the network structure and distribution effects of different types of mobilization issues in the four dimensions of scale, breadth, depth and time of dissemination. It finds that at this stage, the horizontal dissemination effect of national emotion and cultural attribute issues is the most significant, the deepening mobilization ability of athletic attribute issues is more prominent, and the entertainment attribute issues present an overall balanced dissemination effect. Then, the practical pathways for constructing the social mobilization pattern of mega sporting events in China are proposed from three aspects: the dynamic adjustment of the mobilization structure layout, the adaptive guidance of the common intention mobilization and the adaptive debugging of the rational mobilization.

Based on the communication as constitutive of organization theory, this study utilizes social network analysis and text sentiment analysis to explore the effectiveness of the dissemination of the Olympic values in international sports events during the social media era, with a specific focus on the Beijing 2022 Winter Olympic Games. The results indicate that, at the level of information transmission, there was a relative smoothness in the flow of information within the global communication network of the Beijing 2022 Winter Olympic Games, with a weak cross-cultural communication among different "circles" and existing "destroyers" in the network that hindered the effective dissemination of sport values though; at the level of meaning production and negotiation, the discourse power within the global communication network exhibited a coexistence of "decentralization and recentralization". And the global communication space often experienced emotional confrontations due to"destroyers" directing sports-related traffic towards controversial topics and the global sharing of the positive meanings of sport values still faced obstacles due to the interference of negative information. Based on these findings, specific strategies for guiding the effective dissemination of sport values are proposed, which includes promoting the establishment of new relationships among civilizations, adhering to political neutrality in sport, and shifting communication concepts. These strategies aim to better address the question of "how to build a better world through sports".

This study, taking the Chinese Super League (CSL) matches in Chengdu as a case study, employs in-depth interviews and participant observation to examine the evolution of China's football terrace culture within the global context. It analyzes the collaborative mechanisms among key stakeholders, including old and new fan associations, individual fans, football clubs and government bodies, in shaping the spectacle of the stadium. The research identifies three stages in the hybrid regeneration of Chinese and foreign terrace cultures: implantation, mutual regulation and mutual construction. During the implantation stage, a new-type of fans introduced the radical cheering philosophy and methods of Ultras culture to Chinese stands through cultural appropriation. In the mutual training stage, government and clubs intervened to regulate the overzealous behavior of new fans; while traditional fans adapted their cheering styles under the influence of Ultras culture such as embracing singing and dancing performances. In the mutual construction stage, football clubs, as event organizers, consciously fostered a harmonious and inclusive stadium atmosphere through ceremonial adjustments and enhanced order management. This approach gradually garnered recognition from both organized fan associations and casual fans, resulting in a new and distinct Chinese terrace culture.

Sports is a concrete human social activity, which is not only related to human psychological activities, but also extends the relevant abstract concepts. Different academic disciplines and scientific theories have shown increasing interest in studying sports, and different disciplinary orientations lead to long-standing disputes. Humanities and social sciences both debate with and inspire each other in the field of sports research. Two scholars, with backgrounds in philosophy and psychology, have engaged in a debate-style dialogue on the creation and use of concepts, the selection of research methods, the highlights of research significance and the exploration of research topics in sport studies. Through dialogue, possibilities and pathways for cross-disciplinary learning within sports humanities have been established, along with how researchers can derive research topics and features from their personal expertise and disciplinary backgrounds.

Based on the analysis of the practices of New York, London, Tokyo, Paris and other cities in accelerating the integration of sports and urban development, it is evident that the important ways to promote the integrated development of sports and cities include creating a symbiotic environment to enhance the pace of integration and development of sports and cities, consolidating a symbiotic interface to plan the development situation, focusing on symbiosis and co-prosperity to enhance its vitality, and optimizing the symbiosis mode to unleash its potential. Consequently, to promote the deep integration of sports and cities in China, it is necessary to create a good development environment to stimulate the "new vitality" of sports-city integration, drive the integration and co-governance of multiple bodies to bring together the "new dynamics" of sports-city integration, innovate and expand the symbiotic interface to create a "new carrier" for the integration of sports and cities, explore the model of reciprocity and symbiosis, and open up a "new blue ocean" of the integration.

ObjectiveThe aim of this study was to investigate the underlying cerebral hemodynamic mechanisms of 12 weeks of Tai Chi exercise to improve motor function in older adults by fNIRS technique.MethodsThirty-four healthy older adults were randomized into a Tai Chi group and a control group. The Tai Chi group received a 12-week Tai Chi intervention, and the control group did not receive any intervention. The subjects' motor functions were assessed before and after the experiment and hemodynamic indices of motor-related brain regions in the walking task state were collected.ResultsIn the within-group comparison before and after the intervention, the results of unipedal stability, Berg scale score and timed rise and walk test in the Tai Chi group were significantly improved compared with the pre-intervention (P<0.05); the oxygenated hemoglobin concentration in the primary motor cortex (M1) and the premotor area-assisted motor area (PMC-SMA) were all significantly increased compared with the pre-intervention (P<0.05). In the post-intervention inter-group comparison, the oxygenated hemoglobin concentrations in the M1 and PMC-SMA brain regions of the Tai Chi group were significantly higher than those of the control group (P<0.05).Conclusion12 weeks of Tai Chi exercise significantly improved the motor function and neural activation of motor-related brain regions in older adults.

Based on summing up the latest research progress of the interaction between molecular clock and mitochondrial quality under exercise and dietary change, this study proposes that intermittent fasting may promote health by regulating the molecular clock through mitophagy. The interaction between the molecular clock and the mitochondria dynamics can effectively avoid insulin resistance caused by high fat diet. In terms of sports, it has been elucidated that PGC-1, Fis1 and HIF-1 can interact with BMAL1 in adipose tissue, liver and skeletal muscle, respectively, and exercise regulates the interaction of molecular clock and MQC through BMAL1-HIF-1,CLOCK-mitophagy, and AMPK-SIRT1-PGC-1. However, the mechanism of long-term chrono-aerobic/anaerobic exercise and/or different exercise intensities/modes combined with intermittent fasting to regulate the interaction effect of mitochondrial quality and rhythmic molecular clock needs further study. Mitophagy may be the important link in this process. Whether exercise ameliorates metabolic abnormalities induced by high fat diet through the interaction effect of molecular clock and mitochondrial dynamics remains to be explored.

ObjectiveTo systematically review, evaluate and summarise the best evidence regarding exercise program for women at high risk of gestational diabetes mellitus (GDM) from domestic and international databases, and to provide recommendations for them to prevent GDM.MethodsWith the "6S" evidence model, the two clinical decision support systems of UpToDate and BMJ Best Practice, as well as several international guideline websites, were employed. The search encompassed both Chinese and English databases, including PubMed, Embase, Cochrane Library and CNKI. In addition, six relevant associations were reviewed for the best evidence on exercise in high-risk GDM populations. Evidences were graded using the Australian JBI Evidence Pre-Grading and Evidence Recommendation Levels System, with the strength of recommendations based on the JBI FAME structure and grading principles.ResultsA total of 39 articles were included, comprising 16 guidelines, 17 systematic reviews, 3 expert consensus documents and 3 evidence summaries. Among these, 21 articles (53.8%)were of high quality, and 18 articles (46.2%) moderate. 54 best evidence recommendations were summarized across four domains: medical screening for high-risk GDM populations, exercise risks, exercise prescriptions, and other suggestions/precautions. Of these, 37 recommendations (68.5%) were assigned a recommendation level of 1, one recommendation (1.8%) a level of 2, nine recommendations (16.7%) a level of 4, and seven recommendations(13.0%) a level of 5. Additionally, 50 recommendations (92.6%) were strongly endorsed, while four recommendations (7.4%) were weakly endorsed.ConclusionThe evidence highlights the necessity of pre-exercise assessments for women at high risk of GDM. Regular, moderate-intensity aerobic, resistance, or hybrid exercise during pregnancy&#x2212;targeting at least 150 minutes per week or 30 minutes per day in at least three sessions per week&#x2212;was recommended to reduce the risk of GDM and associated pregnancy complications. Additionally, personalized, well-designed, and professionally supervised exercise programs are encouraged to enhance both the safety and adherence.