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

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

Match-play running demands in a female soccer professional club: From academy to professional team 女足职业俱乐部的比赛运行需求：从学院到职业队

IF 1.9 4区教育学

International Journal of Sports Science & Coaching Pub Date : 2024-05-07 DOI: 10.1177/17479541241248610

David Casamichana, Eider Barba, Petrus Gantois, Fabio Nakamura, Beñat Erkizia, Julen Castellano

{"title":"Match-play running demands in a female soccer professional club: From academy to professional team","authors":"David Casamichana, Eider Barba, Petrus Gantois, Fabio Nakamura, Beñat Erkizia, Julen Castellano","doi":"10.1177/17479541241248610","DOIUrl":"https://doi.org/10.1177/17479541241248610","url":null,"abstract":"The objective of the study was to examine the match-running load of female soccer players competing at distinct age groups (U15, U18 and senior cohorts) belonging to the same professional club, over a competitive season. The external load variables of the official matches were monitored with Global Positioning System (GPS) technology: total distance (TD), at >18 km·h−1 (running), at >21 km·h−1 (high-speed running, HSR) and at >24 km·h−1 (sprint, SPR) distances, efforts at >85% of the maximal sprint speed (>85% MSS), acceleration load (aLoaD), accelerations (ACC2 and ACC3, >2 and >3 m·s−2) and decelerations (DEC2 and DEC3 <−2 and <−3 m·s−2). Overall, distances covered at running, HSR and sprinting were greater for senior players than their younger peers (U15 and U18; p < 0.05). Regarding HSR and sprints, no difference was found for sprints accumulated by central defender (CD) players in comparison to U18 and U15 ( p > 0.05). In addition, U18 and senior players engaged more often in ACC and DEC, >2 and >3 m·s−2, respectively, than U15 players ( p < 0.05). In conclusion, older female soccer players are exposed to higher match load than their younger peers. These findings could be useful for soccer coaches to design specific speed development programmes across the long-term athletic development pathway.","PeriodicalId":47767,"journal":{"name":"International Journal of Sports Science & Coaching","volume":"1 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140927343","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

Early sport specialization impact on rates of injury in collegiate and professional sport participation: A systematic review and meta-analysis 早期体育专业化对大学生和职业运动员受伤率的影响：系统回顾和荟萃分析

IF 1.9 4区教育学

International Journal of Sports Science & Coaching Pub Date : 2024-05-07 DOI: 10.1177/17479541241248565

Bahman Adlou, Alan Wilson, Christopher Wilburn, Wendi Weimar

{"title":"Early sport specialization impact on rates of injury in collegiate and professional sport participation: A systematic review and meta-analysis","authors":"Bahman Adlou, Alan Wilson, Christopher Wilburn, Wendi Weimar","doi":"10.1177/17479541241248565","DOIUrl":"https://doi.org/10.1177/17479541241248565","url":null,"abstract":"Early sport specialization (ESS) is prevalent among adolescent athletes aspiring for elite status. However, the impact of ESS on sports injury (SI) rates during their collegiate and professional careers remains unclear. This systematic review and meta-analysis evaluate the effect of ESS on SI rates during high-level sport participation. Data sources Search included PubMed, Web of Science, SPORTDiscus, EMBASE, Cochrane, CINAHL, ERIC, and Medline. Study selection PRISMA guidelines were followed to identify peer-reviewed articles published until 01 August 2023. Eligible studies reported numbers of athletes in collegiate and professional teams, including national, in ESS and their counterpart category, along with the portion with at least one SI. Studies on concussion or non-contact injuries, or without explicit injury reports during elite sport participation were excluded. Of 526 studies, 13 met the criteria, and 5 were included in the quantitative analysis. These studies reported SIs on collegiate and professional athletes. A total of 3087 athletes were analyzed (ESS = 45%). The overall effect showed that ESS athletes had a lower odds ratio (OR = 0.7) of a SI during high-level sport participation, but this finding was not statistically significant (p > 0.05). Results demonstrated that ESS athletes had a lower odds ratio (OR = 0.7) of a SI during elite sport participation, but the effect was not statistically significant. Articles with clear reports are scarce, and thus limit the impact of the findings in this study. High heterogeneity was evident in this analysis, largely due to lack of standardized terminology, evaluation, and data representation. Prospective studies that consider diverse athlete population of the same sport are warranted.","PeriodicalId":47767,"journal":{"name":"International Journal of Sports Science & Coaching","volume":"27 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140927294","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

The relationships among trait mindfulness, obsessive passion, and emotions in high school sport managers 高中体育管理者的特质心智、执着激情和情绪之间的关系

IF 1.9 4区教育学

International Journal of Sports Science & Coaching Pub Date : 2024-05-07 DOI: 10.1177/17479541241247790

Ye Hoon Lee, Heetae Cho

{"title":"The relationships among trait mindfulness, obsessive passion, and emotions in high school sport managers","authors":"Ye Hoon Lee, Heetae Cho","doi":"10.1177/17479541241247790","DOIUrl":"https://doi.org/10.1177/17479541241247790","url":null,"abstract":"PurposeMindfulness emerges as a possible means to alleviate obsessive passion. Nevertheless, its application in sport leadership context remains understudied, despite the significant levels of stress and turnover that are common in this profession. This study aims to investigate the relationships among trait mindfulness, obsessive passion, and specific positive (e.g., happiness), neutral (e.g., calmness), and negative (e.g., anger) emotions in high school sport managers.MethodIn total, 358 high school sport managers ( Mage = 48.47, SD = 8.93) working in 46 states in the United States completed the online questionnaires measuring the proposed variables. Descriptive statistics, correlation analysis, confirmatory factor analysis, and structural equation modeling were utilized to examine the hypotheses.ResultThe results showed that trait mindfulness negatively predicted obsessive passion. Additionally, obsessive passion negatively predicted the feelings of happiness and calmness, while it positively predicted anger. The mediation analysis revealed that obsessive passion fully mediated the relationships between trait mindfulness and the three types of emotion.ConclusionThese findings are significant because they demonstrate the buffering role of trait mindfulness in obsessive passion. Furthermore, the study provides meaningful insights into sport managers’ emotional experiences, particularly by empirically examining the effect of obsessive passion on different emotions.","PeriodicalId":47767,"journal":{"name":"International Journal of Sports Science & Coaching","volume":"40 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140927258","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

Profiling of expert bouldering routesetters 巨石攀登线路设置专家简介

IF 1.9 4区教育学

International Journal of Sports Science & Coaching Pub Date : 2024-05-06 DOI: 10.1177/17479541241248583

Julian Henz, Xavier Sanchez, Daniel Memmert, Jerry Prosper Medernach

{"title":"Profiling of expert bouldering routesetters","authors":"Julian Henz, Xavier Sanchez, Daniel Memmert, Jerry Prosper Medernach","doi":"10.1177/17479541241248583","DOIUrl":"https://doi.org/10.1177/17479541241248583","url":null,"abstract":"IntroductionBouldering is an Olympic discipline that takes place on low-height climbing structures known as boulders. Routesetters play a critical role in bouldering; they design and set boulders to be climbed, which must be original, safe to climb and adapted to climbers’ levels. Considering the critical role routesetters play to keep the present success and ensure the future development of bouldering, the purpose of this study was to profile expert routesetters by identifying relevant key skills they possess and examining specific strategies they use when designing boulders.MethodsSeventy-eight expert routesetters completed an online survey structured in eight sections that assessed the following: perceptual–cognitive skills; soft skills; motor skills; climbing skills; welfare; safety and difficulty; climbing holds and wall features; and climbing movement diversity and boulder styles.ResultsAmong fundamental skills experts identified, most relevant to routesetters were possessing a broad climbing movement repertoire, the ability to develop several climbing strategies for one boulder, forecasting of climbing movements, climbing-specific decision-making and creativity, self-reflection, teamwork, dealing with negative feedback, technical skills and general fitness. Furthermore, most relevant specific routesetter skills and strategies appeared to encompass the ability to design boulders that account for climbers’ skill levels and safety, to adapt to the constraints of climbing gyms, to make optimal use of climbing wall features and to design versatile climbing movements.ConclusionThe expert routesetters’ profile comprises fundamental and specific skills and strategies that enable them to design target-oriented boulders with versatile climbing movements for different levels whilst accounting for climbers’ welfare.","PeriodicalId":47767,"journal":{"name":"International Journal of Sports Science & Coaching","volume":"2 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140886756","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

Effects of tackle height and shoulder preference on head and trunk acceleration in rugby 擒抱高度和肩部偏好对橄榄球运动中头部和躯干加速度的影响

IF 1.9 4区教育学

International Journal of Sports Science & Coaching Pub Date : 2024-05-06 DOI: 10.1177/17479541241252967

Yuta Ogata, Takashi Soejima, Kenji Hara, Hiromi Takahata, Yu Ando, Akihiro Yamashita, Mutsuo Yamada, Hidetaka Murakami, Akira Maeda

{"title":"Effects of tackle height and shoulder preference on head and trunk acceleration in rugby","authors":"Yuta Ogata, Takashi Soejima, Kenji Hara, Hiromi Takahata, Yu Ando, Akihiro Yamashita, Mutsuo Yamada, Hidetaka Murakami, Akira Maeda","doi":"10.1177/17479541241252967","DOIUrl":"https://doi.org/10.1177/17479541241252967","url":null,"abstract":"BackgroundMost rugby injuries occur during tackles, therefore investigating safe tackling techniques is essential.ObjectivesTo determine the effects of different tackle heights and shoulder preference on head and trunk acceleration.MethodsThirty-nine rugby players belonging to university leagues, adult leagues, and adult leagues, tackled a stationary tackle bag under three height conditions (high, middle, and low) with a dominant shoulder and a non-dominant shoulder. We calculated the peak head and trunk accelerations (PhA and PtA, respectively) during the tackles and evaluated the difference in accelerations by the tackle height and side.ResultsThe PhA (26.1 g (17.1) g) during the tackles was significantly higher than the PtA (11.7(7.2) g, p < 0.01). The PhA was significantly larger in the high (27.4 (19.4) g) and middle (27.7 (17.0) g) tackles compared to the low (23.4 (14.6) g) tackle (high vs low: p < 0.01; middle vs low: p < 0.01). The PhA was significantly lower during the dominant shoulder side (23.0 (13.7) g) tackles than during the non-dominant shoulder side (30.4 (21.3) g) tackles ( p < 0.01).ConclusionThe results suggest that coaching strategies and policies aimed at reducing tackler height and improving tackle technique on the non-dominant shoulder would help reduce head acceleration forces.","PeriodicalId":47767,"journal":{"name":"International Journal of Sports Science & Coaching","volume":"116 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140886961","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