26242 research outputs found
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A148: The Effects of Diverse Screen-Based Sedentary Behaviors on Sleep Among Children and Adolescents
No full textExisting research has shown that screen-based sedentary behaviors may adversely affect children’s and adolescents’ sleep. However, the specific impact of different types of screen-based sedentary behaviors on sleep remains unclear. This two-year nationwide cross-sectional study aimed to elucidate the influence of various online screen-based sedentary behaviors on children’s and adolescents’ sleep. Method: Drawing on data from the China Family Panel Studies, questionnaire surveys were administered in 2020 and 2022 to 4,506 participants aged 10–18 years. Participants who reported sleeping fewer than eight hours per day were classified as having insufficient sleep. The frequencies of online gaming, online shopping, online learning, WeChat use, and short-video viewing were assessed via questionnaires. Three generalized linear logistic regression models were constructed to evaluate the effects of these behaviors: Model 1 did not control for any additional variables, Model 2 controlled for four sociodemographic factors (gender, age, urban/rural residence, and school level), and Model 3 further controlled for exercise frequency. The results of Model 1 indicated that, compared with those who did not engage in online shopping, children and adolescents who participated in online shopping 60% to experience insufficient sleep (Odds Ratio [OR] = 1.60, 95% Confidence Interval [CI]: 1.44–1.75). Similarly, compared with those who never used WeChat, those who had previously used WeChat 67% to have insufficient sleep (OR = 1.67, 95% CI: 1.42–1.93). After controlling for gender, age, urban/rural residence, and school level, the negative association between online shopping and insufficient sleep remained significant, with shopping online linked to insufficient sleep (OR = 1.18, 95% CI: 1.01–1.36). After additionally accounting for exercise frequency, online gaming was associated with18% higher risk of insufficient sleep (OR = 1.18, 95% CI: 1.04–1.33), whereas online shopping showed22% of insufficient sleep (OR = 1.22, 95% CI: 1.07–1.38). Insufficient sleep (fewer than eight hours per day) among children and adolescents is differentially influenced by specific types of screen-based sedentary behaviors. Notably, online shopping, WeChat use, and online gaming demonstrated negative effects on sleep duration. Future policies aimed at regulating screen time and promoting healthy sleep in youth should thus focus on the distinct impacts of various screen use behaviors and develop targeted intervention strategies accordingly
A179: Meta-Analysis of the Efficacy of Heavy Slow Resistance Training in the Treatment of Patellar Tendinopathy
No full textPatellar tendinopathy (PT), a chronic tendon disorder marked by load-dependent pain, predominantly affects athletic populations. Current management emphasizes eccentric exercise modalities, particularly heavy slow resistance (HSR) training combining eccentric-concentric phases versus isolated eccentric protocols. Emerging evidence indicates that HSR not only matches traditional eccentric training in pain relief but functional surpasses it in enhancing neuromuscular control and patient-reported outcomes. This review examines HSR\u27s mechanistic foundations and clinical effectiveness to guide evidence-based rehabilitation protocols for PT. Method: This meta-analysis examines HSR\u27s therapeutic efficacy through eight randomized controlled trials (263 patients) from major databases (PubMed, Embase, Cochrane, etc.). Inclusion criteria required: 1) adults with ≥3-month PT confirmed clinically/ultrasonographically; 2) HSR vs conventional therapy; 3) outcomes including VISA-P, VAS, tendon morphology, and quadriceps strength Systematic searches across five databases identified 15,714 records, with eight studies (263 patients: 128 HSR intervention, 135 controls) meeting inclusion criteria (2015-2022 publications). Meta-analysis revealed: 1) Functional outcomes: No between-group difference in Victorian Institute of Sport Assessment-Patellar (VISA-P) scores (MD=3.00; 95%CI -1.62–7.62; p=0.20; I²=0%). 2) Pain management: HSR demonstrated superior pain reduction (VAS MD=-0.64; 95%CI -1.13–-0.16; p=0.01; I²=20%). 3) Tendon morphology: Initial cross-sectional area (CSA) analysis showed no difference (SMD=0.23; 95%CI -0.37–0.83; p=0.45; I²=55%). Post-sensitivity analysis (excluding one outlier) revealed significant CSA improvement (MD=0.49; 95%CI 0.04–0.95; p=0.03; I²=0%). Heterogeneity originated from inconsistent CSA measurement protocols: precise mid-point vs. maximal area between patellar apex and tibial tubercle. 4) Tissue density: No interventional effect (MD=-0.11; 95%CI -0.70–0.48; p=0.71; I²=0%). 5)Muscular performance: Comparable quadriceps strength outcomes (MD=0.74; 95%CI -16.59–18.07; p=0.93; I²=0%). Current evidence demonstrates that heavy slow resistance (HSR) training alleviates pain and improves patellar tendon cross-sectional area in patellar tendinopathy (PT) management, yet shows no therapeutic superiority over conventional interventions in enhancing limb functionality, quadriceps strength, or tendon thickness. Nevertheless, existing clinical investigations remain limited in both sample size and population diversity (predominantly athletic cohorts), necessitating further randomized controlled trials to establish standardized loading protocols and validate their generalizability across broader patient demographics
A086: Study on the Influencing Factors of Chinese Skeleton Athletes\u27 Sliding Technique
No full textSports technique plays a pivotal role in determining an athlete’s performance. Enhancing technical proficiency not only strengthens individual competitiveness but also contributes to national success in international sporting events. As a relatively new winter sport in China, skeleton lacks comprehensive theoretical research and practical guidance on the key factors influencing athletes\u27 sliding techniques. This gap hinders technological advancements and the sustainable development of the skeleton in China. Therefore, this study aims to investigate the factors affecting Chinese skeleton athletes\u27 sliding techniques, supplementing foundational research in China\u27s winter sports and providing both theoretical and practical insights for athlete training and academic exploration. Method: This study employed a mixed-methods research approach. A literature review and expert interviews were conducted to establish the research framework. Data were collected through questionnaire surveys, field observations, and video analyses. Factor analysis was applied to process the data, leading to the construction of an equation model to classify and summarize the factors influencing skeleton sliding techniques. (1) The influencing factors are categorized into two groups: subject-related (athlete-specific) and object-related (external) factors. (2) Core subject factors include technical skills and perceptual-motor control, with physical fitness and psychological attributes serving as foundational supports. (3) Key object factors encompass sled performance and track characteristics, alongside environmental and training conditions. (4) Chinese skeleton athletes demonstrate strong initial gliding performance but struggle with maintaining stability in later phases, resulting in speed loss. (5) Achieving a balance between subject and object factors is critical for elite performance. (6) Training should prioritize enhancing stability in later stages, focusing on centrifugal force management and posture control. (7) Sled customization should be tailored to align with athletes’ technical needs to optimize performance. This study identifies key subject-related and object-related factors influencing skeleton sliding performance and highlights their interactions. Compared to previous research, this study emphasizes the critical role of perceptual-motor control and equipment optimization. The findings suggest that improving sliding stability and sled customization can significantly enhance competitive performance. However, limitations such as sample size and data acquisition constraints remain. Future research should explore biomechanical analyses and real-time feedback training to further refine skeleton techniques. Practically, this study provides actionable recommendations for optimizing training strategies and equipment customization, aiming to enhance the competitive potential of Chinese skeleton athletes
A178: CRISP-DM Framework Guided AI Modeling for Enhancing Physical Health in Collegiate Populations
No full textUniversity students represent the core driving force behind the modernization of a nation. Their physical fitness is not only crucial for individual development but also serves as a key indicator of national population quality and sustainable development. Since the implementation of policies such as the National Student Physical Fitness Standards (2014 Edition), the overall physical fitness of Chinese university students has significantly improved. However, rising obesity rates and declining physical fitness levels among students remain pressing concerns. The rapid advancement of artificial intelligence (AI) technologies offers new pathways to address challenges such as inefficient health data management and the lack of scientific health planning for university students. This study employs Python to construct a neural network model utilizing student physical fitness data collected from Hubei University between 2014 and 2024. A convolutional neural network (CNN) model is developed, adhering strictly to the CRISP-DM methodology throughout the modeling and data analysis process. Furthermore, SHAP values are introduced to analyze the neural network\u27s output, enabling an in-depth examination of the characteristics contributing to low PFI scores among different gender-body type groups. 1) The proportion of individuals with low PFI scores within different BMI groups varied by gender. Except for normal-weight males (69.51%), all other groups exhibited proportions exceeding 70%. 2) The relationship between BMI and PFI among university students is nonlinear, with PFI peaking when BMI approaches the normal range. 3) The contributing factors to low PFI scores differ across gender-BMI subgroups, emphasizing the need for tailored physical fitness improvement strategies based on individual body types. Analyzing health data from different gender-body type groups using SHAP values is a feasible approach. The explainable deep learning model based on SHAP overcomes the limitations of traditional regression analysis and accurately identifies the specific weaknesses of low-PFI individuals. For instance, overweight males aiming to enhance their physical fitness should prioritize body composition improvement and upper and lower limb strength development. It is recommended that universities implement targeted intervention programs based on BMI and gender stratification
A209: Skill Characteristics and Optimal Localized Actions of the China Open Ball Kids
No full textThe rapid development of the China Open has heightened demands for optimizing ball kids\u27 skills, which serve as critical operational support for tournament execution. However, China\u27s ball kid system, with its relatively recent establishment and limited experiential accumulation, exhibits notable gaps compared to the century-old protocols of Grand Slam tournaments (Australian Open, French Open, Wimbledon, US Open). This study systematically compares skill characteristics between the China Open and Grand Slam ball kids to propose localized, efficiency-driven technical improvements. Method: Utilizing mixed methodologies—literature review, video analysis of 12 Grand Slam matches, comparative evaluation, and field interviews—the research evaluated five operational skills: stance, squat, signaling, passing to the players, and ball rolling. Observations from 2023 China Open operations were integrated with biomechanical principles and tournament-specific cultural contexts to formulate optimization strategies. China Open ball kids demonstrated fundamental competence in stance and signaling, yet required optimization in squat (leg sequencing, weight-bearing patterns) and court cushioning mat design. Key recommendations include: 1) standardizing squat with left-leg-forward support sequencing; 2) reducing mat thickness (1–2 cm) to minimize tripping risks; 3) retaining lateral-step passing for biomechanical efficiency; 4) diversifying training through tennis-specific core strength programs. Limitations include the unvalidated efficacy of proposed crouching modifications, requiring empirical validation through controlled biomechanical testing. Quantitative assessments of passing motion efficiency and practical evaluations of mat material innovations remain outstanding. Future research should incorporate motion capture validation and longitudinal performance tracking to strengthen theoretical foundations for China\u27s ball kid development
A254: Wuqinxi in Fitness Qigong: Mapping the Global Knowledge Structure Through Citespace (2005-2025)
No full textThe current research reviews on Fitness Qigong Wuqinxi mostly focus on a single have not yet formed a systematic overview of the research progress at home and abroad. This study aims to investigate the development trend of domestic and international research on Wuqinxi in the past 20 years, to provide a reference for subsequent studies. Based on the 156 documents included in Web of Science and China Knowledge Network (CNKI) from 2005 to 2025, CiteSpace software was used to visualize and analyze the annual trend of publications, core authors, institutional cooperation networks, and research hotspots. (1) The number of domestic Wuqinxi publications was significantly correlated with the social environment and policy orientation, and foreign studies lagged behind domestic ; (2) The density of domestic and foreign core authors\u27 cooperation networks was low: the largest domestic cooperation group was the team of Shih Xiaolin from the Affiliated Hospital of Zhejiang University of Traditional Chinese Medicine, focusing on the research of Wuqinxi on the prevention and treatment of osteoporosis; the foreign core group was the team of Wang Zhen from the School of Martial Arts of the Shanghai Physical Education College, which was focusing on the research of the effects of Wuqinxi on Parkinson\u27s disease38; (3) Research institutions are concentrated in university hospitals and sports schools; (4) There differences in research hotspots at home and abroad: domestic focus on bone density , middle-aged and elderly people and other medical interventions, while foreign countries pay attention to health care , treatment of diseases and other applications; (5) Research topics focused on the medical value of Wuqinxi and the benefits of physical and mental health. However, domestic research focuses on traditional medical verification, while foreign research favors clinical application exploration. In the past 20 years, the number of articles published on Wuqinxi has increased steadily, and its unique medical effects have been scientifically verified. It is recommended to strengthen the research on the application of Wuqinxi as a non-pharmacological therapy in the treatment of clinical diseases, and at the same time, to promote the deepening of academic cooperation at home and abroad
A302: From Heritage to Health: Chinese Traditional Sports in Modern Context
No full textTraditional ethnic sports are an integral part of Chinese cultural heritage, encompassing physical exercise, emotional cultivation, and social bonding. However, their functional value in the context of modern health promotion has not been systematically examined. This study aims to compare various traditional sports among Chinese ethnic groups to assess their unique roles in promoting physical health, psychological well-being, and social connection, and to explore their potential in contributing to the Healthy China 2030 national strategy. A multi-case comparative design was employed, focusing on three representative traditional sports from Guangxi: the Zhuang Tea-Picking Dance, the Dong Bench Dragon Dance, and the Miao Lusheng Circle Dance. A total of 180 elderly and middle-aged participants from ethnic communities participated in the study. Data were collected using a mixed-methods approach, including participatory observation, semi-structured interviews, and health indicators such as heart rate, mood scale, and social support index. Quantitative data were analyzed using SPSS, while qualitative data were processed with NVivo for thematic coding and interpretation. All three traditional sports showed statistically significant effects in improving cardiovascular function, emotional regulation, and social connectedness (p\u3c0.01). Qualitative findings revealed that participants perceived these activities as culturally meaningful and emotionally fulfilling, often describing a strong sense of ritual, belonging, and life satisfaction. Especially in ethnic minority regions, traditional sports function as community health mechanisms embedded in cultural routines. Ethnic traditional sports are not only physical activities but also culturally embedded practices that support holistic health promotion. This study highlights their multidimensional contributions to physical and mental health, especially through cultural identity and social engagement. Compared to conventional fitness interventions, these culturally rooted activities offer alternative models of community-based health promotion. Limitations include a geographically narrow sample and a short intervention duration. Future research should explore longitudinal impacts and expand to other ethnic regions. Policy integration is encouraged to include traditional sports in national health initiatives
A248: A Dual-Path Mechanism Study of Internalization of Track and Field Hurdling Skills in VR
No full textAthletic hurdles, as a high-complexity perceptual-motor task, relies on the deep synergy between perceptual and motor systems for skill internalization. Traditional training methods have limitations in motor skill feedback, and virtual reality technology provides a new paradigm for perceptual-motor fitness research through multimodal interaction. However, the dynamic mechanism of the perceptual-action dual pathway (epiphenomenal cognitive pathway and implicit automation pathway) on the internalization of hurdling skills in VR environments has not yet been clarified, which hinders the precise optimization of VR training systems. This study aims to break through the venue limitation, reduce the learning risk of high-risk maneuvers, and provide a new path for teaching complex skills. Method: 1) Literature method. We searched the relevant literature through China Knowledge Network, Web of Science, and Wanfang Database, and organized and summarized the relevant literature with the keywords. 2) Experimental method. Thirty-two college students specializing in track and field hurdles were selected as research subjects, who were randomly divided into an adaptive VR group (experimental group) and a traditional VR control group, and the degree of skill internalization was assessed using a dual-task paradigm. 3) Mathematical and statistical methods. Using Excel 2019 statistical data, SPSS Statistics 25.0 statistical software. 1) The experimental group showed a significant improvement after training: a reduction in the temporal error of the hurdling maneuver (P \u3c 0.001) and a reduction in the dual-task reaction time(P=0.003). 2) Perceptual fitness affects skill internalization through two pathways: 1. The episodic pathway: via working memory load reduction; 2. The implicit pathway: via functional reorganization of the cerebellar-basal ganglia loop. 3) The control group showed only limited improvement in the epiphenomenal pathway dimension(P \u3e 0.05). This study reveals that perceptual-motor adaptability in VR environments facilitates the internalization of hurdling skills through a dual-path mechanism: the episodic path optimizes the cognitive representation of movement strategies, and the implicit path accelerates the cortical-cerebellar encoding of automated movement patterns. The findings provide a theoretical framework for building an intelligent VR training system and confirm the significant advantages of dynamic adaptive VR in complex motor skill training
A215: The Application of Sweat Analysis-Based Smart Wearable Devices in Monitoring Exercise Performance of Obese Adolescents
No full textIn recent years, the upward trend in adolescent obesity rates has become increasingly evident. The emergence of smart wearable devices has broken through the traditional technical barriers of sweat detection, enabling real-time, non-invasive, and continuous monitoring of athletic performance in adolescents. This report aims to explore the impact of smart wearable devices on enhancing the athletic performance of adolescents from the perspective of sweat analysis. Method: We employed various research methods, including literature review, logical analysis, and statistical analysis, to conduct a comprehensive search for relevant literature from the past five years in electronic databases such as PubMed, Web of Science, and CNKI. This review summarizes the latest research advancements in the field of athletic performance monitoring based on sweat analysis and the application of smart wearable devices (1). The electrolytes found in sweat can be utilized to assess the body’s hydration status and muscle fatigue levels. Detection of metabolites such as glucose and lactate can indicate physical fitness status and anaerobic metabolism levels. Furthermore, cortisol can be used to evaluate the effectiveness of fat loss in adolescents. (2) Screen printing technology allows for the integration of multiple electrochemical sensors onto a single flexible substrate, enabling non-invasive detection of sweat biomarkers through methods such as colorimetric analysis and electrochemical analysis using various sensitive elements. Microfluidic systems serve as the core technology, facilitating the absorption and accumulation of sweat, thus enhancing detection efficiency. (3) Smart wearable devices based on sweat analysis can assess various indicators, including activity intensity, energy expenditure, hydration status, and thermoregulation abilities of obese adolescents during exercise. Additionally, employing big data analytics, these devices can provide personalized exercise prescriptions tailored to the specific needs of adolescents. Smart wearable devices based on sweat detection hold great potential for a wide range of applications. However, several issues persist in their current practical use. For example, the rapid evaporation of sweat can lead to detection results that are easily influenced by environmental factors and temperature. Additionally, the sensitivity of smart sensors may decrease after repeated use. Therefore, it is essential to strengthen the interdisciplinary integration of fields such as electrochemistry, materials science, and exercise science. This collaboration can enrich the practical application scenarios of smart wearable devices and optimize the pathways for monitoring athletic performance
A013: Under the Background of “Double Reduction”, the Development Strategy of the After-School Sports Services of the Primary School
No full textWith the reform of quality education, schools around the world have responded positively to the national policy in recent years after the governments of various places have gradually introduced relevant documents on reducing the burden and pressure on students. Carrying out after-school sports services in primary schools can reduce the burden on students and meet their individual needs. This study conducted an in-depth investigation and analysis of the current situation of after-school sports services in Pengcheng Primary School in Wenjiang District, aiming to propose development strategies for future development. Method: The relevant leaders, after-school sports service teachers, students, and parents at Pengcheng Primary School in Wenjiang District were selected as the survey subjects. Based on the analysis of the problems in the implementation of after-school sports services in primary schools, the paper focuse on the construction of the teacher team, the allocation of sports facilities and equipment, the arrangement of sports projects, and the teacher\u27s attitude in the after-school sports services at Pengcheng Primary School, and conduct an in-depth analysis of the problems existing in the implementation of after-school sports services in primary schools. Primary school after-school sports services to carry out the weak teachers, physical education teacher construction not perfect; school sports venues, equipment construction not perfect; after-school sports services project traditionally a single; after-school sports services management system not clear to carry out fewer activities Conclusions: The following development strategies were proposed based on the survey strengthening the construction of school PE teaching staff and increasing the recruitment channels for teachers; improving sports venues and equipment and optimizing the allocation of resources; enriching after-school PE service programmes; and improving the rules and regulations related to after-school PE services