26242 research outputs found
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A121: The Relationship Between Muscle Activation, Co-Activation, and Leg-Spring Stiffness in Recreational Runners
No full textIn running, the organism needs to select appropriate muscle activation strategies to modulate leg-spring stiffness to achieve a high level of exercise performance. However, direct evidence regarding the relationship between leg-spring stiffness, muscle activation, and co-activation during running remains limited. Therefore, we aimed to explore the relationship between muscle (co) activation and leg-spring stiffness (leg stiffness and vertical stiffness) in recreational runners. Method: Twenty-nine male recreational runners (age: 21 ± 1.17 yr, height: 1.80 ± 0.06 m, weight: 72.13 ± 9.91 kg) ran at 12 km/h while kinematic data, ground reaction forces, and surface electromyography signals were collected for nine muscles. Statistical Non-Parametric Mapping (SnPM) was utilized to investigate the correlation between leg-spring stiffness time-series and lower limb muscle activation and co-activation time-series. The higher activation of the gastrocnemius lateralis during the mid-stance phase (r = 0.506 to 0.529, 12.75%-17.40% of the gait cycle) and the higher activation of the soleus during the propulsion phase (r = 0.509 to 0.554, 14.60%-21.10% of the gait cycle) were significantly positively correlated with the higher leg stiffness at 12 km/h. In addition, large associations were found between larger vertical stiffness at 12 km/h, higher activation of the lateral gastrocnemius muscle during the mid-stance phase (r = 0.510 to 0.603, 9.80%-20.35% of the gait cycle), and higher activation of the soleus muscle during the propulsion phase (r = 0.511 to 0.625, 16.55%-24.20% of the gait cycle). This study suggests that higher ankle and knee extensor activation contributes to enhanced leg-spring stiffness regulation during the stance phase, with unilateral and distal muscles playing a more important role than bilateral and proximal muscles
A015: The Impact of Core Strength Training on Physical Health and Stability of Female College Students
No full textGiven the current physical health status of Chinese college students, particularly females, characterized by issues such as obesity, weak cardiopulmonary function, and poor posture, this study aimed to investigate the effects of aerobics and core strength training on these students. Therefore, a 16-week intervention was conducted among ordinary female college students enrolled in aerobics classes, observing and comparing changes in body composition, physical health, and body stability, and analyzing the impact of core strength training on physical health and body stability. Method: Forty-two female college students (Mage=20.56) were selected from a public physical education aerobics class of a university in Shanghai and divided into the control group and the experimental group with 26he study lasted for 16 weeks. The experimental group performed the intervention with core strength training, while the control group performed traditional strength training. Pre- and post-intervention assessments included national physical health tests and body stability tests. Data collected before and after the experiment were analyzed using independent samples t-tests with SPSS, setting the significance level at 0.05. The following conclusions were drawn: (1) In terms of body composition, the experimental group showed significant decreases in body weight and BMI (P \u3c 0.05), whereas no significant changes were observed in the control group (P \u3e 0.05). (2) In terms of physical health, there were no statistically significant changes in vital capacity, sitting forward bend, 50m or 800m run performance in the experimental group (P \u3e 0.05). However, standing long jump and sit-up scores improved significantly (P \u3c 0.05) and very significantly (P \u3c 0.01), respectively. After the experiment, there was a significant difference in standing long jump performance between the experimental and control groups (P \u3c 0.05), with a more pronounced improvement in sit-up performance (P \u3c 0.01). (3) In terms of physical stability, the experimental group demonstrated significant improvements in eight-level bridge performance (P \u3c 0.01) and one-legged standing with eyes closed (P \u3c 0.05). Post-intervention comparisons revealed significant differences between the experimental and control groups in eight-level bridge performance (P \u3c 0.01) and one-legged standing (P \u3c 0.05). Conclusions: This study found that: (1) Core strength training can effectively improve body composition among ordinary female college students in aerobics classes. (2) Core strength training has a significant positive impact on the physical health of these students. (3) Compared to traditional strength training, core strength training is more effective in enhancing physical stability, specifically core strength and balance control among female college students
A161: Advances in Tele-Exercise Interventions for Sarcopenia: A Comprehensive Review
No full textSarcopenia, which is a progressive loss in muscle function and mass, significantly aggravates the quality of life of the elderly. Traditional face-to-face rehabilitation is of limited accessibility with poor compliance. The purpose of this article is to discuss the application of telemedicine among exercise interventions for sarcopenia, emphasizing its technical architectures, effectiveness, and issues. This article applied literature review, content analysis, and inductive summary methods to combine research progress regarding remote monitoring of exercise therapy in treating sarcopenia among older adults. Utilizing keywords such as sarcopenia, exercise prescription, remote monitoring, and aging, literature was retrieved, analyzed, and summarized by means of Chinese and foreign databases, including CNKI, Web of Science, and PubMed. Telemedicine, facilitated by internet-based platforms (e.g., mobile applications, video conferencing, and smart devices), enables comprehensive investigation and diagnosis of sarcopenia patients and customized exercise prescriptions and real-time feedback adjustments. The core remote exercise intervention protocol involves multimodal interventions, with resistance training as the primary component, supplemented by balance training, aerobic exercise, whole-body vibration training (WBVT), and traditional exercises such as Tai Chi and Baduanjin. This approach reflects considerable clinical effectiveness in enhancing musculature functioning (e.g., grip force and gait speed), reducing healthcare costs, and bettering quality of life through a systematic monitoring plan that reduces the dangers of exercise-linked injury. Digital platforms enable enhanced therapeutic compliance via machine-based reminders and personalized feedback tools, employing data-based algorithms to optimize intervention parameters. Technical difficulties still exist with older populations, particularly regarding smart device operation ability and robustness in remote data collection precision. Subsequent studies must address these implementation concerns with a view to determining the long-term viability of telemedicine-based sarcopenia care models. Telemedicine provides scalable solutions to managing sarcopenia, particularly treatment compliance and access. However, challenges such as barriers to using devices for older patients and remote muscle mass evaluation need to be addressed. This paper further explores how telemedicine technologies could be combined with conventional training protocols, focusing on precision challenges, including data calibration and subtype management, especially sarcopenic obesity. Future activities should integrate personalized prescriptions and guarantee their efficacy in the different subtypes. Multidisciplinary collaboration and technological optimization will enhance the role of remote healthcare in comprehensive sarcopenia management
A049: Research on the Intelligent Development Path of New Quality Productivity, Enabling the Sports Park
No full textThe new quality productivity is a collection of cutting-edge technologies such as artificial intelligence, big data, and cloud computing, with high-tech, high efficiency, and high-quality characteristics, and is the key engine to enable the intelligent and high-quality development of sports parks. Since the 14th Five-Year Plan period, the intelligent and high-quality development of sports parks has been the main theme of the national fitness strategy. However, at this stage, the wisdom of sports parks in China is still in the initial stage, and there are many problems to be solved. Therefore, this study conducts an in-depth analysis of the intrinsic logical relationship between new-quality productivity and the intelligent development of sports parks, explores the path for new-quality productivity to empower the high-quality intelligent development of providing theoretical support for promoting the construction of higher-level public sports facilities. Method: Employing CNKI as the database, the search keywords included Smart sports park and New quality productivity . Literature sources were sourced from SCI, SSCI, and the Peking University Core. Investigating the sports parks in Shanghai, Chengdu, Chongqing, and other cities, and summarizing the present situation of intelligent development of sports parks. New quality productivity is the core driving force to promote the intelligent development of sports parks, which consists of three elements: new quality producers, new quality labor materials, and new quality labor objects. Its enabling logic can be analyzed from the above three dimensions: New quality producers: the core driving force of intelligent development (such as technology application and maintenance, data analysis and decision-making); New quality labor materials: technical support for intelligent development (such as providing intelligent infrastructure, data platforms and algorithms); New quality labor object: key resources for intelligent development (such as data resource utilization and accurate matching of user needs). This study deeply analyzed the internal logical relationship between the new quality productivity and the intelligent development of sports parks. From the perspectives of producers, labor materials and labor objects, it explore the intelligent development path of sports parks: improv the top-level system design, strengthen the collaboration ability of departments; Optimiz the personnel training mechanism and promot the quality of manpower elements; Promot the construction of digital contacts and strengthen the material resources foundation support; riv cross-domain resource integration and enriches service types
A122: Endurance Exercise Ameliorates Age-Related Cardiac Arrhythmias by Modulating ANK2 Expression in Aged Drosophila
No full textCardiovascular disease (CVD) has been a leading cause of death globally, with a significant impact on healthy aging. Aging is significantly rising globally, and older adults are at increased risk of age-related arrhythmias, and the mechanisms underlying age-related arrhythmias remain unclear. In this study, we investigated the relationship between ANK2 and age-related arrhythmias in aged Drosophila and how endurance exercise modulates ANK2 expression on age-related arrhythmias. Method: Wild type w1118 female virgin flies were examined at 10 days of age (10C, young), 30 days of age (30C, middle-aged), and 50 days of age (50C, old) to assess age-related arrhythmias and ANK2 expression. The assays included Drosophila cardiac function analysis, including heart rate (HR), cardiac cycle (HP), and arrhythmia index (AI) to quantify the occurrence of arrhythmias he relative expression level of ANK2 mRNA was detected by RT-qPCR; furthermore, virgin flies of the UAS-ANK2RNAi strain were crossed with the wild-type W1118 strain using UAS-ANK2RNAi, respectively, and the F1 generation virgin flies obtained were divided into ANK2 knockdown (KD) group. The third generation Drosophila locomotor device was used to perform endurance exercise intervention for the aged and knockdown groups, which were recorded as 50E and KDE groups. The locomotion group underwent locomotion intervention at 38 days of age for a fortnight with two days of rest per week for 2.5 hours per day at 24s/r. 1) Compared to the 10C group, the 30C and 50C groups had significantly lower HR, significantly higher HP, significantly higher AI, exhibited more prevalent arrhythmias as well as a significant decrease in the relative expression level of ANK2 mRNA in the 30C and 50C groups.2) Compared to the 50C group, the 50E group had significantly higher HR, significantly lower HP, significantly lower AI, a significant decrease in the incidence of arrhythmias as well as a significant decrease in the relative expression level of ANK2 mRNA. Compared with the KD group, the KDE group showed a significant increase in heart rate, a significant decrease in HP, a significant decrease in AI, a significant decrease in the incidence of arrhythmia, and a significant up-regulation of the relative expression level of ANK2 mRNA. Conclusion: The increase of age-related arrhythmias in Drosophila is associated with the expression of ANK2; moreover, endurance exercise ameliorates age-related arrhythmias by up regulating the expression of ANK2 in Drosophila
A024: Fitness Self-Testing and Changes in Physical Activity and Sleep Behaviors of Chinese Male College Students
No full textIt has been well documented that a significant increase in healthy behaviors, such as physical activity (PA) and sleep, remains to be seen among students. As such, public health organizations across nations are in need of effective approaches to alter students’ health-related behaviors. This study aimed to evaluate the impact of fitness self-testing on PA and sleep behaviors among Chinese male college students. Method: Utilizing a clustered randomized controlled trial (RCT) design, 89 participants were into an intervention (n = 44) and a control (n = 45) group based on their class enrollment: (1) The intervention group conducted monthly fitness self-testing, which allowed them to create personalized physical activity plans. (2) The control group did not participate in fitness self-testing, and no feedback about their fitness-related behaviors was provided. Both groups received initial training on Health-related fitness testing and wore Xiaomi Band 5 for pre-test and post-test data collection. The RM-MANCOVA was performed to test the changes in PA and sleep levels from pre- and post-tests, after controlling for pre-test VO2 max. The significance level was set at 0.05. A significant time*group interaction was (Pillai’s Trace = .40, F4, 83 = 13.89, p \u3c .001, η2 = .40) PA. Comparisons between the intervention and control groups showed significant interactions in several areas: Daily Weekday Steps (F1,87 = 15.14, p \u3c. 001, η2 = .15), Daily Weekend Steps (F1,87 = 12.48, p \u3c .05, η2 = .13), Daily Weekday Active Time (F1,87 = 24.44, p \u3c .001, η2 = .22), Daily Weekend Active Time (F1,87 = 20.32, p \u3c .001, η2 = .19). However, there was no significant time*group interaction for sleep behaviors (Wilk’s Λ = .98, F4, 83 = .45, p = .77, η2 = .02). Fitness self-testing effectively boosts PA engagement among male Chinese college students, demonstrating its potential as a behavioral intervention. Further research is needed to explore the long-term effects and applicability of this approach in different cultural and educational settings
A197: Perceptual Behavior and Social Interaction of Chinese College Students Toward Esports
No full textSocial exchange theory (SET) has been extensively used to recognize students’ perceptual behavior (PB) and social interaction (SI). Research has examined the potential factors of recognition and socialization against the economic factors in individual evaluation, seeking rewards or avoiding costs in relationships. The positive impact of PB and SI is a significant experimental approach to studying social psychology. Therefore, the processes of individuals’ perceptual behavior and their social interactions in Esports might address this research gap. Hence, the purposes of this study were to explain the PBs and SIs toward Esports among college students in China. Method: 341college students were selected as participants in this study from higher education institutions in the eastern region of China. PB and SI were tested with 15 items in relation to the three main factors (economic, recognition, and socialization) among Chinese college students. All items were based on previous research studies and were a 7-point Likert scale. The data were collected through online survey tools (e.g., Tencent Survey, SurveyMonkey). Data Analysis included scale reliability, descriptive statistics, and bivariate correlations. Scale reliability analysis revealed that participants demonstrated good reliability (αs = .728–.802) across all potential items. The mean and standard deviation scores provided by Chinese college students revealed the factors of perceptual behavior (PB) and social interaction (SI), specifically in economics (M = 4.77, SD = 1.10), recognition (M = 4.67, SD = 1.06), and socialization (M = 5.13, SD = 0.99). The factors of economic and recognition were significantly correlated (r = .56, p \u3c .001); the factors of economic and socialization were significantly correlated (r = .598, p \u3c .001); and the factors of recognition and socialization were significantly correlated (r = .629, p \u3c .001). One of the most important results of this study indicates that PB and SI of Chinese college students were significantly influenced by economic, recognition, and socialization factors. Specifically, the positive correlation between recognition and socialization suggests that students who value recognition in Esports are more likely to engage in social interactions within the collegiate Esports community. The significance of this finding is that SET may have a long-term effect on college students’ behavior in perception and social interaction in Collegiate Esports. Therefore, we strongly recommend that leaders navigate the digital arena by leveraging the potential of embedding Esports in higher education
A247: Research on High-Quality Development of Physical Education in Compulsory Education Stage Empowered by Artificial Intelligence
No full textThe high-quality development of physical education in primary and secondary school sports is conducive to building a leading country in education and sports, to develop a high-quality educational system, and to cultivate new generations with ideals, abilities, and responsibilities. Artificial intelligence technology provides strong technical support for the high-quality development of school sports. This research aims to explore how to integrate artificial intelligence technology with school sports and provide a theoretical reference for the high-quality development of school sports in the compulsory education stage. Method: By using the methods of literature review, logical analysis, and field research, this research deeply explored the value implication, action mechanism, and promotion path of the high-quality development of physical education in primary and secondary school sports empowered by artificial intelligence. Firstly, the high-quality development of physical education in primary and secondary school sports has four value implications, including deepening the reform of physical education teaching, improving the quality of talent training, enhancing the efficiency of education governance, and promoting the fairness of physical education. Secondly, computer vision, speech recognition, large language models, and other artificial intelligence, through empowering teaching, learning, evaluation, research, management, and cultivation in physical education in primary and secondary schools, can realize accurate sports teaching, create efficient learning environment, booster multi-dimensional evaluation, build digital research space, promote modern education management, build collaborative education mechanism. Thirdly, to realize the high-quality development of physical education in primary and secondary school sports empowered by artificial intelligence includes: consolidating the policy foundation and strengthening the policy implementation, improving relevant standards and setting up standard models, improving digital infrastructure and breaking through technical limitations, stimulating the vitality of subjects and building a collaborative network, clarifying the role positioning, and improve digital literacy. This research discussed the application of artificial intelligence technology in teaching, learning, evaluation, research, management, and cultivation in physical education in primary and secondary school sports from the micro level, to realize the improvement of education quality, talent quality, teacher quality, and management, and then promote high-quality development. In the digital era, emerging technologies are empowering basic education. Therefore, future studies can explore the application of other digital technologies and physical education in the compulsory education stage, or from other stages of education
A228: Preservation and Dissemination of Taijiquan Culture in Digital Perspective
No full textOne of China’s most iconic cultural traditions has increasingly gained: Taijiquned global recognition: Taijiquned. However, rapid digitalization has significantly changed young people\u27s cultural preferences and participation habits, posing challenges to traditional methods of cultural preservation, which often fail to resonate with youth, creating a noticeable disconnect. This study examines the potential of digital communication—especially short videos, livestreaming, and social media—to preserve and disseminate Taijiquan culture through interactive, youth-oriented methods. Specifically, it empirically explores whether digital media strategies effectively improve younger generations’ cultural awareness, participation motivation, and cultural identity, aiming to provide practical insights for digital heritage protection. A randomized controlled experiment involving 200 young participants (aged 18-35) from Zhengzhou City was conducted, with participants randomly assigned to experimental and control groups (n=100 each). Over eight weeks, the experimental group engaged with digital interventions—including short video dissemination, interactive livestreaming, and social media communities—while the control group experienced only traditional methods (lectures and printed materials). Data were collected pre- and post-intervention via structured questionnaires and in-depth interviews, assessing cultural awareness, willingness to participate, and cultural identity. Quantitative data were analyzed through descriptive statistics and t-tests using SPSS 26.0, while qualitative interview data underwent thematic analysis for deeper interpretation. Quantitative findings indicated significant improvements in the experimental group\u27s cultural awareness (M=4.28 vs. 3.56, p \u3c 0.01), participation willingness (M=4.31 vs. 3.47, p \u3c 0.01), and cultural identity (M=4.25 vs. 3.52, p \u3c 0.01) compared to the control group. Qualitative data revealed that young participants perceived digital methods as “more engaging and relatable,” appreciating especially the interactive aspects of short videos and social media interactions, which effectively stimulated their interest and active involvement. Conversely, traditional approaches were described as “dull and uninspiring,” failing to foster emotional connection or motivation to participate. This study confirms that digital communication significantly outperforms traditional methods in engaging younger audiences in Taijiquan culture, aligning with previous findings highlighting new media effectiveness. Importantly, the research highlights that interactive and engaging content is crucial for youth cultural participation. However, due to the geographically limited sample, future research should expand to diverse regions to enhance generalizability. Additionally, further studies might explore personalized digital content design. Practically, the study recommends that cultural institutions proactively leverage the youth-friendly characteristics of digital platforms to position Taijiquan as a “trendy culture,” thus ensuring its vibrant preservation and meaningful engagement among contemporary youth
A046: VR/AR in Sports Science: Enhancing Performance and Rehabilitation
No full textVirtual reality (VR) and augmented reality (AR) are immersive technologies reshaping sports science by enhancing training, rehabilitation, and spectator experiences. VR creates simulated environments, while AR superimposes digital elements onto real-world contexts. Despite their growing adoption, systematic evaluations of their efficacy in sports remain sparse. This study examines peer-reviewed evidence (2015–2024) to assess VR/AR applications in athlete skill development, injury recovery, and tactical coaching, while identifying research gaps and practical challenges. A systematic review of 52 studies (2015–2024) was conducted using PubMed, Scopus, and IEEE Xplore. Inclusion criteria prioritized experimental or mixed methods designs with measurable outcomes. Participants included elite/professional athletes (n = 1,650), rehabilitation patients (n = 620), and coaches (n = 210) across soccer, basketball, tennis, and post-surgical recovery. Interventions featured VR-based cognitive-motor tasks (e.g., 360° decision-making drills), AR-assisted biomechanical feedback systems, and hybrid training modules. Data collection methods included motion capture (e.g., Vicon systems), EMG sensors, performance analytics (accuracy, reaction time), and validated questionnaires (e.g., System Usability Scale). Quantitative data were analyzed via meta-regression (random-effects model), while qualitative insights underwent thematic coding. VR training improved soccer players’ decision-making speed by 18% (p \u3c 0.001, 95% CI: 12–24%) compared to traditional methods. AR-guided rehabilitation reduced ankle reinjury rates by 27% (p = 0.02) through real-time posture correction. However, 25% of VR users reported cybersickness, correlating with dropout rates (r = 0.34, p = 0.01). Qualitative themes highlighted coaches’ preference for AR’s contextual feedback but noted hardware limitations (e.g., latency). Spectator studies revealed AR-enhanced broadcasts increased engagement by 32% (p \u3c 0.05) in live events. Consistent with prior meta-analyses, VR/AR significantly enhances skill acquisition and rehabilitation outcomes. Novel findings include AR’s superiority in reducing reinjury risks, contrasting earlier skepticism about its precision. Limitations include underrepresentation of female athletes (18% of studies) and short-term efficacy assessments. Future work should prioritize longitudinal studies, gender-balanced cohorts, and cost-effective hardware designs. Practically, VR/AR offer scalable tools for remote training and injury prevention, yet require improved user adaptability to maximize adoption. This review underscores the need for sport-specific VR/AR frameworks to address diverse performance and rehabilitation demands