期刊：
BMC PUBLIC HEALTH,2025年25(1):1-15 ISSN：1471-2458
通讯作者：
Di Cui
作者机构：
[Qingqing Fan; Le Zhao; Ziyao Xia; Rongxuan Li; Qing Jiang; Zuoliang Wang; Tianer Zuo] School of Physical Education, Hunan University, Changsha, China;The State Key Laboratory of Medical Virology, College of Biology, Hunan University, Changsha, China;School of Physical Education, Changsha University of Science& Technology, Changsha, China;[Di Cui] School of Physical Education, Hunan University, Changsha, China. cuidi@hnu.edu.cn;[Di Cui] The State Key Laboratory of Medical Virology, College of Biology, Hunan University, Changsha, China. cuidi@hnu.edu.cn
通讯机构：
[Di Cui] S;School of Physical Education, Hunan University, Changsha, China<&wdkj&>The State Key Laboratory of Medical Virology, College of Biology, Hunan University, Changsha, China
关键词：
24-h movement behaviors;Physical fitness;College students;Compositional data;Isotemporal substitution
摘要：
OBJECTIVES: This study aimed to provide theoretical and empirical support for promoting physical fitness enhancement and implementing evidence-based behavioral interventions on university campuses. Through a rigorous compositional data analysis framework combined with isotemporal substitution model (ISM), we systematically examined the associations between 24-h movement behaviors and physical fitness among college students. METHODS: This study employed a stratified random cluster sampling design to recruit 3,974 participants from the physical education classes at a technological university located in Central South China during the 2022-2023 academic year. Data collection comprised two standardized assessments. The 24-h movement behaviors Questionnaire (24HMBQ) was administered to quantify five critical domains of daily movement patterns: sleep (SLE), sedentary behavior (SED), light physical activity (LPA), moderate physical activity (MPA), and vigorous physical activity (VPA). The participants' physical fitness was assesed against the Chinese National Student Physical Fitness Standards (CNPFSS). Employing compositional isotemporal substitution analysis, this study examined the dose-response relationship between 24-h movement behaviors and physical fitness in college students. RESULTS: Compositional regression analysis revealed a significant positive correlation between moderate-to-vigorous physical activity (MVPA) and the total physical fitness test score among total students, science students, male students, and male science students (all P < 0.05). MVPA exhibited consistent positive correlations with indicators in sit-and-reach, standing long jump, and pull-up tests among total students, while demonstrating a negative correlation with indicators for 50-m and 800/1000-m run (all P < 0.05). Meanwhile, LPA was found to be positively linked to indicators in vital capacity and 800/100m run (all P < 0.05). ISM revealed that reallocating 30min from LPA, sleep, and SED to MVPA significantly enhanced the total physical fitness test scores for science students, male students, and male science students (all P < 0.05). Furthermore, substituting 60min of MVPA for other activity behaviors led to significant improvements in the total physical fitness test scores for the total students, as well as these three subgroups(all P < 0.05). In the dose-response analysis, a symmetrical pattern emerged when substituting MVPA for other activities, with respect to the total physical fitness test score. For the total student cohort, the substitution duration displayed a positive correlation with the test score, peaking at 50min within the range of -40 to + 50min. For science students, male students, and male science students, the peak correlation occurred at 45min within the range of -40 to + 45min. CONCLUSION: For students in technological universities, it is imperative to enhance both MVPA and LPA, with a stronger focus on increasing MVPA. Additionally, the frequency of MVPA during 45-min physical education classes should be intensified.
作者：
Wei, Lihong;Aman, Mohd Salleh;Abidin, Nor Eeza Zainal;Qian, Wanqin
期刊：
BMC Psychology,2025年13(1):1-11 ISSN：2050-7283
通讯作者：
Abidin, NEZ
作者机构：
[Wei, Lihong] Changsha Univ Sci & Technol, Sch Phys Educ, Changsha 410076, Hunan, Peoples R China.;[Abidin, Nor Eeza Zainal; Abidin, NEZ; Aman, Mohd Salleh; Wei, Lihong] Univ Malaya, Kuala Lumpur, Malaysia.;[Qian, Wanqin] HNU Meixihu High Sch, High Sch, Changsha 410221, Hunan, Peoples R China.
通讯机构：
[Abidin, NEZ ] U;Univ Malaya, Kuala Lumpur, Malaysia.
关键词：
Sports media use;Sports participation behavior;Sports commitment;Structural equation modeling;Media roles
摘要：
BACKGROUND: This study investigates the complex relationships between sports media use (SMU), sports participation behavior (SPB), and sports commitment. With the increasing consumption of sports media, it is essential to understand both the quantitative and qualitative dimensions of how media engagement correlates with participation and long-term commitment to sports. OBJECTIVES: The study aims to investigate the relationship between SMU and SPB, as well as the mediating role of SPB in sports commitment, using a mixed-methods approach. Additionally, it explores individuals' lived experiences to provide deeper insights into how media shapes engagement and commitment. METHOD: A mixed-methods design was employed, integrating quantitative and qualitative data. A survey of 484 participants from diverse demographic backgrounds was conducted, and structural equation modeling (SEM) was used to analyze the relationships among variables. To complement these findings, semi-structured interviews were conducted with a subset of participants to explore their narratives surrounding media roles, sports behavior, and commitment. Thematic analysis was applied to interpret qualitative data. RESULTS: Quantitative findings revealed significant positive relationships between SMU and SPB and between SMU and sports commitment. SPB was found to partially mediate the relationship between SMU and sports commitment. The qualitative findings supported these results, highlighting key themes such as motivation, role modeling, and identity formation through media exposure. Participants described how sports media inspired them to engage in sports and reinforced their long-term commitment. CONCLUSIONS: This study demonstrates that SMU plays a significant role in fostering sports participation and commitment, with SPB as a key mediator. The integration of qualitative insights strengthens these findings by illustrating the personal experiences and psychological mechanisms that drive engagement. These results underscore the potential of sports media for promoting sustained participation and commitment, offering practical implications for policymakers, educators, and sports organizations aiming to leverage media for greater sports engagement. Future research should explore cultural differences and the role of specific media content types to refine further our understanding of the media's correlation with sports behavior.
通讯机构：
[Zhu, M ] Z;Zhejiang Shuren Univ, Coll Informat Sci & Technol, Hangzhou, Peoples R China.
关键词：
Hybrid attention;Spatial;pyramid pooling;Object detection;Basketball player action detection;Basketball player action detection dataset
摘要：
Watching basketball game videos is an important reference for coaches to analyze the team's tactics. Detecting the athletes' actions on the court in real time through an object detection algorithm can help coaches find team problems and formulate solutions. Aiming at the problems of fewer basketball players' action detection datasets and the difficulty of action detection, this paper proposes a dataset of basketball players' action detection, BPAD (basketball player action dataset), and an object detection algorithm, YOLOSS (YOLOv4 SimSE and SPPFCSPCG), in which the BPAD dataset consists of 2,151 pictures, which are obtained by extracting the videos of college basketball teams' matches and annotated with the Labelimg tool, and include three categories, namely, walk, run, and defense. The YOLOSS algorithm is based on YOLOv4, with the more efficient Ghostnet as the backbone of the model, and add a new hybrid attention module SimSE and a new spatial feature pyramid pooling module SPPFCSPCG. YOLOSS can effectively improves the detection algorithm's ability to recognize the typical basketball actions of athletes in the video stream-run, defense, and walk. The recognition ability of the YOLOSS algorithm on the BPAD dataset is as high as 82.4% mAP50, which can clearly express the action of each player on the court. By comparing the results of various experiments, it is proved that YOLOSS, the object detection algorithm proposed in this paper, can effectively detect the actions of basketball players.
摘要：
This study focuses on the intricate connections among youth sports, personal development, and skill acquisition in contemporary China. Building upon established theoretical frameworks, the study aims to unravel the intricate interplay among various variables. Employing a robust methodology that accounts for mediation and moderation effects and with a sample of 808 individuals representing diverse demographics, the findings shed light on the significant influence of family structure, particularly the prevalence of extended family arrangements, on an individual's character development. Furthermore, the study underscores the pivotal role of personal characteristics, particularly self-esteem, in shaping admirable traits. The research identifies several contributing factors to positive character development, including active participation in sports, parental support, accessibility to sports facilities, positive peer influence, and high self-esteem. Parents play a crucial role in mitigating the adverse effects of peer pressure by offering positive reinforcement and serving as role models. These findings hold important implications for youth development programs, emphasizing the vital role of parents in guiding character development, particularly in the context of peer pressure.
摘要：
<jats:sec><jats:title>Background</jats:title><jats:p>Childhood maltreatment has been identified as a risk factor for depressive symptoms. Social anxiety is closely associated with depression. Physical activity has been regarded as an underlying protective factor. Little is known about the complex relations among these factors in Chinese middle school students. This study aimed to explore whether social anxiety mediated the association between childhood maltreatment and depressive symptoms and investigate whether physical activity moderated the indirect or direct effect of the mediation model.</jats:p></jats:sec><jats:sec><jats:title>Methods</jats:title><jats:p>A total of 1,570 middle school students were recruited and measured for childhood maltreatment (measured by Childhood Trauma Questionnaire—Short Form Chinese version), social anxiety (as the mediator, measured by the Chinese simplified version of Social Anxiety Scale for Adolescents), depressive symptoms (measured by the Chinese version of Depression Anxiety Stress Scales-21), physical activity (as the moderator), and covariates such as age, sex, and nationality. The proposed relationships were tested using mediation and moderated mediation models.</jats:p></jats:sec><jats:sec><jats:title>Results</jats:title><jats:p>Emotional abuse was directly associated with depression, and the association between emotional abuse and depression was partially mediated by social anxiety. The associations between emotional abuse with depression and with social anxiety were moderated by physical activity.</jats:p></jats:sec><jats:sec><jats:title>Conclusion</jats:title><jats:p>This study revealed the mediating role of social anxiety and the moderating role of physical activity between emotional abuse and depression, which emphasizes the potential benefits of sufficient physical activity to reduce social anxiety and depressive symptoms, and more intervention studies should be conducted to explore the direct influence of sufficient physical activity in the future.</jats:p></jats:sec>
