International Journal of Sports Science & Coaching最新文献_第4页

The accuracy of measuring velocity during weightlifting movements with five velocity-based training devices 用五种基于速度的训练装置测量举重动作中速度的准确性

IF 1.9 4区教育学

International Journal of Sports Science & Coaching Pub Date : 2024-08-02 DOI: 10.1177/17479541241266248

Sergio A. Lemus, Mallory Volz, Avery Blasdale, Francisco Beron-Vera, Cheng-Bang Chen, Bryan J. Mann, Francesco Travascio

{"title":"The accuracy of measuring velocity during weightlifting movements with five velocity-based training devices","authors":"Sergio A. Lemus, Mallory Volz, Avery Blasdale, Francisco Beron-Vera, Cheng-Bang Chen, Bryan J. Mann, Francesco Travascio","doi":"10.1177/17479541241266248","DOIUrl":"https://doi.org/10.1177/17479541241266248","url":null,"abstract":"The use of weightlifting exercises is prevalent in competitive and recreational environments, as well as sport-specific training. Traditionally, weightlifting coaches prescribe specific training loads based on an individual's maximal ability. Velocity-based training offers an alternative method that promises to quantify strength based on velocity and provides information that increases competitiveness through real-time feedback. Various velocity measurement devices are available on the market. Their precision is critical for the adequate implementation of velocity-based training. The aim of the present study was to compare the concentric peak velocity measurements of five of these devices during two weightlifting movements, the snatch and clean, to data collected with a 12-camera motion capture system, which was considered as gold standard. It was hypothesized that the velocity measurement devices used in this study would vary in accuracy based on their retail prices. Velocity readings associated with light and moderate (40% and 70% of one-repetition max) loads were measured for both the snatch and clean performed by 12 competitive weightlifters. A least products regression was used to assess validity by comparing five devices against a criterion measure. A general linear model showed statistical differences in the velocities measured with these five devices ( p < 0.001). Specifically, the GymAware RS linear position transducer was the most accurate device, demonstrating no fixed or proportional bias when used to quantify velocity during the snatch and clean. The remaining four devices significantly underestimated peak velocity, which would directly impact the daily planning of lifters’ training. Practitioners must consider the error and bias of each device before implementing velocity-based training.","PeriodicalId":47767,"journal":{"name":"International Journal of Sports Science & Coaching","volume":"44 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141881738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

‘It's about putting the learning into context’: A multimethod, multiple perspective exploration of the process of learning in introductory coach education 将学习融入情境"：多方法、多角度探索教练入门教育的学习过程

IF 1.9 4区教育学

International Journal of Sports Science & Coaching Pub Date : 2024-07-26 DOI: 10.1177/17479541241263178

Justine B. Allen, Colleen Reid, Stephen Macdonald

{"title":"‘It's about putting the learning into context’: A multimethod, multiple perspective exploration of the process of learning in introductory coach education","authors":"Justine B. Allen, Colleen Reid, Stephen Macdonald","doi":"10.1177/17479541241263178","DOIUrl":"https://doi.org/10.1177/17479541241263178","url":null,"abstract":"Coach education continues to be an integral part of coaches’ learning journey, but their usefulness has also been questioned. Given the disparity in research findings, the purpose of this study was to further our understanding of the role of the coach developer in the learning process within introductory level coach education courses. Drawing on Moon's stages of learning and using multiple methods (observation, interviews, focus groups), we explored multiple perspectives (coaches, coach developers and researcher observer) of the activities and learning situations within introductory courses (judo, basketball, paddlesports). In total, three courses were observed, each lasting two days (48 hours of observation), six coach developers participated in an interview (45–60 minutes each) and 18 coaches participated in one of five focus groups (20–300 minutes each). Through our thematic analysis, we developed three themes: structure supports the learning process; National Governing Body resources are just a starting point for learning; a deep approach to learning can be facilitated. Our findings suggest that despite criticisms of large-scale approaches to coach education, they were useful to coaches and coach developers were able to facilitate some deep learning. Furthermore, the quality of coach education programmes was largely dependent on the expertise of coach developers in their roles. Questions are raised about the conceptualisation of learner-centred approaches to coach education delivery.","PeriodicalId":47767,"journal":{"name":"International Journal of Sports Science & Coaching","volume":"6 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141784095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Considerations for vertical jump testing in collegiate basketball players: The impact of immediate individual versus social comparison feedback and team leaderboard engagement 大学篮球运动员纵跳测试的注意事项：即时个人与社会比较反馈和团队排行榜参与的影响

IF 1.9 4区教育学

International Journal of Sports Science & Coaching Pub Date : 2024-07-26 DOI: 10.1177/17479541241266192

Nicolas M. Philipp, Ramsey M. Nijem, Stryder D. Blackburn, Dimitrije Cabarkapa, Chelsi Scott, Andrew C. Fry

{"title":"Considerations for vertical jump testing in collegiate basketball players: The impact of immediate individual versus social comparison feedback and team leaderboard engagement","authors":"Nicolas M. Philipp, Ramsey M. Nijem, Stryder D. Blackburn, Dimitrije Cabarkapa, Chelsi Scott, Andrew C. Fry","doi":"10.1177/17479541241266192","DOIUrl":"https://doi.org/10.1177/17479541241266192","url":null,"abstract":"Recent literature has shown that the provision of feedback can enhance vertical jump performance acutely, as well as chronically when implemented during phases of training. The aim of our study was to investigate the influence of two types of visual feedback on performance and variability of countermovement jump-derived force-time characteristics in a cohort of male and female National Collegiate Athletic Association Division 1 basketball players. Specifically, individual visual feedback (IVF) was compared to a form of social comparison feedback (SCF), and authors hypothesized there to be performance increases and more stable measures in the SCF condition. In line with this hypothesis, findings suggested significantly enhanced performance in the SCF condition for seven out of eight force-time metrics (e.g. jump height and reactive strength index modified). However, given the small between-condition effect sizes, differences between conditions may lack practical significance. Furthermore, findings suggested less between-jump variability in the SCF condition, compared to the IVF condition, making for a more stable assessment. This in particular makes for more reliable measures, for which when studied over time, more subtle changes in performance may be observed. In summary, our findings highlight acutely enhanced vertical jump performance, and more stable measures, when athletes are exposed to an SCF condition, compared to a normal IVF condition. Practitioners are encouraged to consider these findings when planning vertical jump assessments and are discouraged from implementing different types of feedback at random, especially when measuring performance over time.","PeriodicalId":47767,"journal":{"name":"International Journal of Sports Science & Coaching","volume":"41 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141783993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Physical performance estimation in practice: A systematic review of advancements in performance prediction and modeling in cycling 实践中的体能评估：对自行车运动成绩预测和建模进展的系统回顾

IF 1.9 4区教育学

International Journal of Sports Science & Coaching Pub Date : 2024-07-26 DOI: 10.1177/17479541241262385

Loes Stessens, Jasper Gielen, Romain Meeusen, Jean-Marie Aerts

{"title":"Physical performance estimation in practice: A systematic review of advancements in performance prediction and modeling in cycling","authors":"Loes Stessens, Jasper Gielen, Romain Meeusen, Jean-Marie Aerts","doi":"10.1177/17479541241262385","DOIUrl":"https://doi.org/10.1177/17479541241262385","url":null,"abstract":"Physical performance in cycling is commonly evaluated with laboratory-based performance markers. However, these markers are not monitored on a regular basis, mainly due to the high costs of testing equipment, invasive sampling and time-intensive protocols. The use of mathematical modeling offers a promising alternative allowing for consistent performance monitoring, identification of influential variables affecting performance, and facilitation of planning, monitoring, and predictive analysis. Wearable technology, such as physiological and biomechanical sensors, can be integrated with mathematical models to enhance the practicality of performance monitoring and enable real-time feedback and personalized training recommendations. In this systematic review, we attempted to provide an overview of the developments in predicting and modeling of performance in cycling and their respective practical applications. The PRISMA framework yielded 52 studies that met the inclusion criteria. The models were discussed according to their modeling goal: characterizing kinetics, alternatives to the gold-standard, training control, observing training effects, predicting competitive performance and optimizing performance. Field-based models and technological advancements were highlighted as solutions to the limitations of gold-standard testing. Due to the lower accuracies of modeling techniques, the gold-standard laboratory-based methods of testing will not be replaced by mathematical models. However, models do form a more practical alternative for regular monitoring and a powerful tool for training and competition optimization. A modeling technique needs to be individualized to the goal and the person and be as simple as possible to allow regular monitoring. Ideally, the technique would work in the field, uses submaximal exercise intensities and integrates technological advancements such as wearable technology and machine learning to increase the practicality even more.","PeriodicalId":47767,"journal":{"name":"International Journal of Sports Science & Coaching","volume":"140 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141784097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of the constraints associated with the numerical game situations on the technical-tactical actions of U-11 football players in Spain 西班牙 11 岁以下足球运动员的技术战术动作受到与数字比赛情况有关的限制的影响

IF 1.9 4区教育学

International Journal of Sports Science & Coaching Pub Date : 2024-07-26 DOI: 10.1177/17479541241263722

Francisco Javier García-Angulo, Antonio García-Angulo, José Maria Giménez-Egido, Enrique Ortega-Toro

{"title":"Influence of the constraints associated with the numerical game situations on the technical-tactical actions of U-11 football players in Spain","authors":"Francisco Javier García-Angulo, Antonio García-Angulo, José Maria Giménez-Egido, Enrique Ortega-Toro","doi":"10.1177/17479541241263722","DOIUrl":"https://doi.org/10.1177/17479541241263722","url":null,"abstract":"The aim of the present study was to analyse the influence of the constraints led approach (CLA) systems, such as the playing space, the number of players and the numerical game situations (superiority, equality and numerical inferiority) on the technical-tactical actions of U-11 players in small-sided games (SSGs). A case study was developed where two of the CLA constraint systems were applied on three SSG where the dimensions of the game space were modified (SSG1: 160 m2 ; SSG2 and SSG3: 155 m2 ) and the numerical game situation against the opposing team (SSG1: equality; SSG2 and SSG3: superiority/inferiority). The study sample consisted of U-11 players (n = 8) competing at federated level in Spain (10.25 ± 0.45 years; 2.21 ± 0.61 years of experience). The results of this study show an very strong degree of association between the game modalities and the way of obtaining the ball (2Ln(BFp10) = 10.06) and a strong association between the game modalities and the zone of origin of the ball (2 Ln(BFp10) = 6.02). It should be noted that a positive association was found between games modes and ball height in obtaining the ball (2Ln(BFp10) = 4.06); type of conduction (2Ln(BFp10) = 5.88); technical action (2Ln(BFp10)= 2.32) and efficiency (2Ln(BFp10) = 4.04). These data can help coaches to optimize the training process of young players by modifying the training tasks based on the constraint systems proposed in this study.","PeriodicalId":47767,"journal":{"name":"International Journal of Sports Science & Coaching","volume":"17 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141783998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Linking pre-performance stress appraisals with emotions in sport 将体育运动中的赛前压力评估与情绪联系起来

IF 1.9 4区教育学

International Journal of Sports Science & Coaching Pub Date : 2024-07-25 DOI: 10.1177/17479541241259726

Nicholas Stanger, Mariana Kaiseler, Toni L. Williams

{"title":"Linking pre-performance stress appraisals with emotions in sport","authors":"Nicholas Stanger, Mariana Kaiseler, Toni L. Williams","doi":"10.1177/17479541241259726","DOIUrl":"https://doi.org/10.1177/17479541241259726","url":null,"abstract":"Although research has investigated how appraisals are linked with categories of emotions (e.g. pleasant and unpleasant emotions) in sport, research into how stress appraisal components are associated with specific discrete emotions commonly experienced in sport has received scant attention. This study examined how pre-performance stress appraisals were related to pre-performance anger, anxiety, dejection, excitement, and happiness. Athletes ( N = 458) completed measures of pre-performance stress appraisals and emotions in relation to their latest competitive performance. Path analyses revealed challenge appraisal was positively linked to pleasant emotions, and threat appraisal with unpleasant emotions. Specific emotions also possessed discrete links with appraisal components. For example, uncontrollable-by-anyone appraisal was positively linked with anger and dejection but inversely linked with anxiety. Moreover, controllable-by-others appraisal was positively associated, and controllable-by-self appraisal was negatively associated, with anxiety. Excitement and happiness were similarly related with appraisal components. However, controllable-by-self appraisal was positively and more strongly associated with excitement, whereas controllable-by-others appraisal was also positively and directly linked with happiness. These findings highlight how stress appraisals are linked with common emotions in sport and offer applied implications for coaches, sport psychologists and athletes regarding ways that could help regulate pre-performance emotions in sport.","PeriodicalId":47767,"journal":{"name":"International Journal of Sports Science & Coaching","volume":"23 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141783995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A data-driven analysis of the technical and tactical evolution of elite women's football 对精英女子足球技术和战术演变的数据驱动分析

IF 1.9 4区教育学

International Journal of Sports Science & Coaching Pub Date : 2024-07-23 DOI: 10.1177/17479541241257809

Lotte Bransen, Jesse Davis

引用次数: 0

Exploring the impact of ball possession directionality on youth footballers’ positioning, technical skills and physical abilities in small-sided games 探索持球方向性对青少年足球运动员在小型比赛中的定位、技术技能和体能的影响

IF 1.9 4区教育学

International Journal of Sports Science & Coaching Pub Date : 2024-05-27 DOI: 10.1177/17479541241257016

Diogo Coutinho, Bruno Gonçalves, Adam Leigh Kelly, Sara Santos, Pedro Figueiredo, Carlos Soares, Bruno Travassos

{"title":"Exploring the impact of ball possession directionality on youth footballers’ positioning, technical skills and physical abilities in small-sided games","authors":"Diogo Coutinho, Bruno Gonçalves, Adam Leigh Kelly, Sara Santos, Pedro Figueiredo, Carlos Soares, Bruno Travassos","doi":"10.1177/17479541241257016","DOIUrl":"https://doi.org/10.1177/17479541241257016","url":null,"abstract":"This study aimed to investigate the effects of manipulating ball possession directionality (i.e., NO direction, MULTI direction or ONE direction) on the physical, tactical and technical performance of youth football players during small-sided games (SSGs). A total of 18 male youth football players (age: 13.6 ± 0.4 years) participated in four testing days, where they completed three random order experimental tasks based on a 4vs4 SSG: (i) NO direction, where players performed a ball possession task without a specific direction to progress; (ii) MULTI direction, where two neutral players were added to the top of each pitch and players could use them to maintain possession; and (iii) ONE direction, where each team defended and scored in two small goals placed at opposite ends of the pitch. In the positioning perspective, the NO condition showed a higher spatial exploration index than the other two conditions ( p = .001), while higher distance to the nearest teammate was identified in the MULTI ( p = .007) and to the nearest opponent in the ONE ( p < .001). In the physical variables, higher game pace ( p = .002), total distance covered ( p < .001) and jogging distance ( p < .001) were identified in the MULTI than the other conditions. Lastly, from the technical perspective, players revealed better passing decision-making ( p = .004) in the ONE than NO or MULTI conditions. Based on these results, coaches may use NO condition to emphasize space exploration, MULTI to increase external load and game pace, while ONE to emphasize technical actions related to ball control and pass.","PeriodicalId":47767,"journal":{"name":"International Journal of Sports Science & Coaching","volume":"17 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141172714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Identification of indicators that predict victory in the five main CONMEBOL and UEFA leagues 确定预测巴西国家足球协会和欧洲足联五大联赛胜负的指标

IF 1.9 4区教育学

International Journal of Sports Science & Coaching Pub Date : 2024-05-27 DOI: 10.1177/17479541241249475

André Luiz Braga Jacinto, Gibson Moreira Praça, Guilherme de Sousa Pinheiro, Varley Teoldo da Costa

{"title":"Identification of indicators that predict victory in the five main CONMEBOL and UEFA leagues","authors":"André Luiz Braga Jacinto, Gibson Moreira Praça, Guilherme de Sousa Pinheiro, Varley Teoldo da Costa","doi":"10.1177/17479541241249475","DOIUrl":"https://doi.org/10.1177/17479541241249475","url":null,"abstract":"This study identified which key performance indicators that predict the probability of winning are similar and specific for the top CONMEBOL and UEFA leagues. The analysis covered 12,289 games from the 2017/2018 to 2021/2022 seasons, excluding draws to focus on decisive results. Performance metrics were extracted using the InStat Scout® web platform, evaluating 55 offensive and defensive performance variables from the CONMEBOL and UEFA leagues. For data analysis, binary logistic regression was performed with the Forward Stepwise method. 14 similar predictive variables were identified between the CONMEBOL and UEFA leagues. We also identified 6 win-predictor variables specific to CONMEBOL, 2 win-predictor variables specific to UEFA, and 1 contextual variable that was predictive of victory for the CONMEBOL and UEFA leagues. The KPIs that are associated with an increased likelihood of winning games were identified. These include offensive actions, such as creating scoring chances, entering the final third of the opponent's field, shooting on goal, and being effective in counterattacks, converting penalties, and direct free kicks and making important passes and passes. For defensive actions, it was found that fouls, recoveries, possession interceptions, and low block defensive pressures are also associated with an increased likelihood of winning in the five main CONMEBOL and UEFA leagues. Particularly, for CONMEBOL leagues, counter-attacking actions, ball possession (%), free-kicks and efficiency for high pressing can also be associated with increased probability of winning. Specific to UEFA leagues, advancing actions down the left flanks and efficiency for team pressing are associated with increased probability of winning.","PeriodicalId":47767,"journal":{"name":"International Journal of Sports Science & Coaching","volume":"70 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141172711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Critical speed models of high-resolution speed-duration profiles describe peak running demands in soccer 高分辨率速度-持续时间曲线的临界速度模型描述了足球运动中的高峰跑步需求

IF 1.9 4区教育学

International Journal of Sports Science & Coaching Pub Date : 2024-05-09 DOI: 10.1177/17479541241246951

Eliran Mizelman, Aaron Pearson, Dani Chu, David C Clarke

{"title":"Critical speed models of high-resolution speed-duration profiles describe peak running demands in soccer","authors":"Eliran Mizelman, Aaron Pearson, Dani Chu, David C Clarke","doi":"10.1177/17479541241246951","DOIUrl":"https://doi.org/10.1177/17479541241246951","url":null,"abstract":"The purpose of this study was to characterize critical speed (CS) models for summarizing high-resolution speed-duration profiles from GPS tracking data obtained from soccer players. GPS data from 15 male NCAA Division I soccer players were collected during practices and games over a 6-week period. Moving averages of the speed data were computed for each file for duration windows spanning 0.1 to 600 seconds at 0.1-second resolution. Speed-duration profiles for each session and for the entire sampling period (“global”) were generated for each player by selecting the maximal mean speeds for each duration. Four models were fit to the profiles: the two-parameter CS (CS2) model, the three-parameter CS (CS3) model, the omni-domain speed-duration (OmSD) model, and the five-parameter logistic (5PL) model. The 5PL, CS3, and OmSD models exhibited similar goodness of fits, and all outperformed the CS2 model. Similar CS estimates were obtained for each model, whereas maximum speed ( Smax) estimates were lower for OmSD compared to the 5PL. Players exhibited a range of parameter values for CS, D′, and Smax. Smax and CS estimated from session-specific speed-duration profiles were on average higher for games compared to practices. We conclude that CS models are useful for empirically describing speed-duration profiles and for assessing peak running demands for soccer practices and games. The proposed approach could help coaches design practice activities to better mimic game demands.","PeriodicalId":47767,"journal":{"name":"International Journal of Sports Science & Coaching","volume":"21 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140927341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0