Science & medicine in football最新文献_第8页

Leadership in Finnish elite football: associations between players' self-assessed leadership roles and player-assessed head coach leadership behavior by player gender and age. 芬兰精英足球的领导力：球员自我评估的领导角色与球员评估的主教练领导行为之间的关联（按球员性别和年龄分列）。

Science & medicine in football Pub Date : 2024-11-01 Epub Date: 2023-07-25 DOI: 10.1080/24733938.2023.2237483

Sakari Holopainen, Mihály Szeróvay, Niilo Konttinen, Marja Kokkonen

{"title":"Leadership in Finnish elite football: associations between players' self-assessed leadership roles and player-assessed head coach leadership behavior by player gender and age.","authors":"Sakari Holopainen, Mihály Szeróvay, Niilo Konttinen, Marja Kokkonen","doi":"10.1080/24733938.2023.2237483","DOIUrl":"10.1080/24733938.2023.2237483","url":null,"abstract":"We investigated the associations between Finnish top tier footballers' self-assessed leadership roles (task, motivational, social, external) and player-assessed head coach leadership behavior (supportiveness/emotional composure, negative activation) and leadership role in both practices and games. We also explored the player age- and gender-related differences. Online survey data were anonymously collected from 53 male and 91 female footballers. One player did not identify as male or female, and one chose not to answer the question. Spearman rank-order correlations revealed that players' self-assessed leadership roles correlated positively with their evaluation of their head coach's supportiveness/emotional composure and negatively with negative activation during practices and games. Independent samples T-tests showed that male footballers rated their head coaches lower on negative activation during games and practices and themselves higher on external leadership than female players. The youngest age group, aged 17-20, rated themselves also lower on external leadership than the three older groups.","PeriodicalId":74767,"journal":{"name":"Science & medicine in football","volume":" ","pages":"301-307"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9865437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Skinfold thickness in elite male professional football players: changes across 3 seasons including a COVID-19 lockdown period. 精英男子职业足球运动员的皮褶厚度：包括 COVID-19 禁赛期在内的三个赛季的变化。

Science & medicine in football Pub Date : 2024-11-01 Epub Date: 2023-08-22 DOI: 10.1080/24733938.2023.2248062

Craig Flannigan, Mark Robinson, Nidia Rodriguez-Sanchez, Barry Drust, Ruairidh McGregor, Stuart Galloway

{"title":"Skinfold thickness in elite male professional football players: changes across 3 seasons including a COVID-19 lockdown period.","authors":"Craig Flannigan, Mark Robinson, Nidia Rodriguez-Sanchez, Barry Drust, Ruairidh McGregor, Stuart Galloway","doi":"10.1080/24733938.2023.2248062","DOIUrl":"10.1080/24733938.2023.2248062","url":null,"abstract":"This study investigates variations in skinfold thickness in a European professional football team within and across multiple seasons, including before and after COVID-19 restrictions. Skinfold thickness was measured in 49 male players on 32 occasions across three seasons (2018/19, 2019/20 and 2020/21). Intra- and inter-seasonal trends were examined by comparing values for the sum of eight skinfolds (sum8) at key time points using linear mixed models. In each season, the largest differences in sum8 occurred after the preseason period. These differences ranged from a mean difference (Mdiff) of -11.0 mm (p < 0.001) in 2018/19 to -4.8 mm (p < 0.001) in 2020/21. Increases in sum8 occurred after each off-season; however, the increase after the off-season before the 2020/21 season (which included the COVID-19 lockdown period) was the lowest in magnitude and was not statistically significant (Mdiff = 2.9 mm, p = 0.06). Changes occurring in sum8 between the start and end of the competitive season did not follow a consistent pattern and were generally smaller in magnitude than the changes between other seasonal time points. Despite the notable heterogeneity in sum8 between players, changes within players generally followed a similar pattern between the different seasonal timepoints. In summary, changes in skinfold thickness were predominantly related to off-season and 'preparation for competition' periods. Increases in skinfold thickness can be mitigated during extended remote training periods with appropriate training and nutritional strategies.","PeriodicalId":74767,"journal":{"name":"Science & medicine in football","volume":" ","pages":"333-340"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10039738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experienced academy soccer coaches' perspectives on players' skilfulness. 经验丰富的学院足球教练对球员技术的看法。

Science & medicine in football Pub Date : 2024-11-01 Epub Date: 2023-11-14 DOI: 10.1080/24733938.2023.2280230

William McCalman, Scott G Goddard, Job Fransen, Zachary J Crowley-McHattan, Kyle J M Bennett

{"title":"Experienced academy soccer coaches' perspectives on players' skilfulness.","authors":"William McCalman, Scott G Goddard, Job Fransen, Zachary J Crowley-McHattan, Kyle J M Bennett","doi":"10.1080/24733938.2023.2280230","DOIUrl":"10.1080/24733938.2023.2280230","url":null,"abstract":"Introduction: Soccer coaches are critical to academies as they are central to identifying players with the potential to succeed (i.e., talent). Research suggests coaches perceive skill as determining players' potential. Regardless, researchers only broadly explored their views and quantified players' skill using objective measures, which is problematic as coaches still rely on their subjective intuition. A plausible reason is that skill assessments do not meet coaches' needs.Objective: So,this study explored academy soccer coaches' perspectives on skilfulness.Methods: Participants required a minimum B-level AFC/FA Pro Coaching Licence and five years' experience for inclusion. Australian soccer coaches (n = 4) and academy directors (n = 7) (Mage = 35.90 ± 8.36 years; Mexperience = 14 ± 7.02 years) participated in semi-structured interviews (Mtime = 50.73 ± 7.33).Results: We analysed coaches' responses using reflexive thematic analysis, generating four themes describing skilful players as i) technically proficient, ii) adaptable, iii) effective decision-makers, and iv) influential to their team's success. We produced three themes on the situational and contextual nature of their views, perceiving skill through a v) developmental lens, relying on their vi) experiential knowledge, and their views were vii) context-specific.Conclusion: Additional research is needed to create a refined conceptual model for assessing soccer skilfulness.","PeriodicalId":74767,"journal":{"name":"Science & medicine in football","volume":" ","pages":"386-396"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71489817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing match official performance: a forward-thinking approach for football evolution. 提高比赛官员的绩效：促进足球发展的前瞻性方法。

Science & medicine in football Pub Date : 2024-11-01 Epub Date: 2023-12-21 DOI: 10.1080/24733938.2023.2293843

Carlo Castagna, Peter Krustrup, Magni Mohr, Susana Póvoas

引用次数: 0

Surveying the youth-to-senior transition landscape in Major League Soccer: a new frontier. 调查美国职业足球大联盟（Major league Soccer）年轻人向老年人过渡的前景：一个新的前沿。

Science & medicine in football Pub Date : 2024-11-01 Epub Date: 2023-11-02 DOI: 10.1080/24733938.2023.2272605

Patrick Mannix, Simon J Roberts, Kevin Enright, Martin Littlewood

{"title":"Surveying the youth-to-senior transition landscape in Major League Soccer: a new frontier.","authors":"Patrick Mannix, Simon J Roberts, Kevin Enright, Martin Littlewood","doi":"10.1080/24733938.2023.2272605","DOIUrl":"10.1080/24733938.2023.2272605","url":null,"abstract":"Purpose: The aim of this study was to survey Major League Soccer stakeholders' attitudes and perspectives on the youth-to-senior transition with a particular interest in the league's evolving club structures, specifically the reserve team and youth academy entities. The survey assessed various stakeholders' views on clubs' organisational aims and structure, the capabilities of club entities to prepare players for the first team, and the transition process to the first team within MLS.Methods: A total of 80 participants working in various 'player operation' roles for MLS clubs in the United States and Canada voluntarily completed the online survey.Results: The predominant aim for both reserve teams and academies in MLS is to develop players for the first team. The organisational structure and governance of reserve teams are varied across the league, but an overarching feature is their function as a development team. When players are transitioning, communication between staff may or may not be clear and effective. Finally, for players within an MLS club's talent pathway, a variety of support strategies are made available during the transition into the first team, but psychological support in particular may be limited or unavailable.Conclusion: Similar to European soccer, the aim of MLS reserve teams and youth academies is to develop first team players for the club. However, while players are transitioning into the first team, communication may or may not be clear and effective, and psychological support may be absent, which may impair player development initiatives.","PeriodicalId":74767,"journal":{"name":"Science & medicine in football","volume":" ","pages":"365-373"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49686039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prediction of defensive success in elite soccer using machine learning - Tactical analysis of defensive play using tracking data and explainable AI. 利用机器学习预测精英足球的防守成功率 - 利用跟踪数据和可解释的人工智能对防守战术进行分析。

Science & medicine in football Pub Date : 2024-11-01 Epub Date: 2023-08-04 DOI: 10.1080/24733938.2023.2239766

Leander Forcher, Tobias Beckmann, Oliver Wohak, Christian Romeike, Ferdinand Graf, Stefan Altmann

{"title":"Prediction of defensive success in elite soccer using machine learning - Tactical analysis of defensive play using tracking data and explainable AI.","authors":"Leander Forcher, Tobias Beckmann, Oliver Wohak, Christian Romeike, Ferdinand Graf, Stefan Altmann","doi":"10.1080/24733938.2023.2239766","DOIUrl":"10.1080/24733938.2023.2239766","url":null,"abstract":"The interest in sports performance analysis is rising and tracking data holds high potential for game analysis in team sports due to its accuracy and informative content. Together with machine learning approaches one can obtain deeper and more objective insights into the performance structure. In soccer, the analysis of the defense was neglected in comparison to the offense. Therefore, the aim of this study is to predict ball gains in defense using tracking data to identify tactical variables that drive defensive success. We evaluated tracking data of 153 games of German Bundesliga season 2020/21. With it, we derived player (defensive pressure, distance to the ball, & velocity) and team metrics (inter-line distances, numerical superiority, surface area, & spread) each containing a tactical idea. Afterwards, we trained supervised machine learning classifiers (logistic regression, XGBoost, & Random Forest Classifier) to predict successful (ball gain) vs. unsuccessful defensive plays (no ball gain). The expert-reduction-model (Random Forest Classifier with 16 features) showed the best and satisfying prediction performance (F1-Score (test) = 0.57). Analyzing the most important input features of this model, we are able to identify tactical principles of defensive play that appear to be related to gaining the ball: press the ball leading player, create numerical superiority in areas close to the ball (press short pass options), compact organization of defending team. Those principles are highly interesting for practitioners to gain valuable insights in the tactical behavior of soccer players that may be related to the success of defensive play.","PeriodicalId":74767,"journal":{"name":"Science & medicine in football","volume":" ","pages":"317-332"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9986078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The road to excellence in women's football: a retrospective cohort study over the last 30 years with Swiss national players. 女子足球的卓越之路：过去30年对瑞士国家队球员的回顾性队列研究。

Science & medicine in football Pub Date : 2024-11-01 Epub Date: 2023-11-14 DOI: 10.1080/24733938.2023.2279531

Bryan Charbonnet, Michael J Schmid, Merlin Örencik, Elena van Niekerk, Achim Conzelmann

{"title":"The road to excellence in women's football: a retrospective cohort study over the last 30 years with Swiss national players.","authors":"Bryan Charbonnet, Michael J Schmid, Merlin Örencik, Elena van Niekerk, Achim Conzelmann","doi":"10.1080/24733938.2023.2279531","DOIUrl":"10.1080/24733938.2023.2279531","url":null,"abstract":"Objectives: This study examines the training (age at club entry, hours in club practice, free play, other sports) and environmental characteristics (popularity, media coverage, school and parental support) influencing the development of female Swiss national team players in elite football over a three-decade period.Methods: A retrospective questionnaire was completed by 84 participants, who were divided into three cohorts based on their first game with the Swiss national team (C1 = until 2000, n = 24; C2 = 2001-2010, n = 29; C3 = 2011-2022, n = 31). ANOVAs were employed to compare the cohorts regarding training and environmental variables.Results: The findings demonstrate better perceived environmental conditions, stagnating volume of free play and other sports in childhood, decreasing age at club entry, and increasing club practice and total training volume across cohorts.Conclusion: Practical implications highlight talent development avenues in unstructured settings during free time and in the micro-structure of club practice.","PeriodicalId":74767,"journal":{"name":"Science & medicine in football","volume":" ","pages":"374-385"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71430010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessing the association between on-field heading technique and head impact kinematics in a cohort of female youth soccer players. 在一组女性青年足球运动员中评估场上头球技术与头部撞击运动学之间的关系。

Science & medicine in football Pub Date : 2024-11-01 Epub Date: 2023-10-24 DOI: 10.1080/24733938.2023.2264272

Tanner M Filben, Brian T Tomblin, N Stewart Pritchard, Garrett S Bullock, Jordan M Hemmen, Kristina E Neri, Victoria Krug, Christopher M Miles, Joel D Stitzel, Jillian E Urban

{"title":"Assessing the association between on-field heading technique and head impact kinematics in a cohort of female youth soccer players.","authors":"Tanner M Filben, Brian T Tomblin, N Stewart Pritchard, Garrett S Bullock, Jordan M Hemmen, Kristina E Neri, Victoria Krug, Christopher M Miles, Joel D Stitzel, Jillian E Urban","doi":"10.1080/24733938.2023.2264272","DOIUrl":"10.1080/24733938.2023.2264272","url":null,"abstract":"There is concern that exposure to soccer headers may be associated with neurological sequelae. Training proper heading technique represents a coachable intervention that may reduce head acceleration exposure. The objective was to assess relationships between heading technique and head kinematics in female youth soccer players. Fourteen players (mean age = 14.4 years) wore instrumented mouthpieces during practices and games. Headers were reviewed by three raters to assign a technique score. Mixed models and LASSO regression evaluated associations of technique with peak linear acceleration (PLA), rotational acceleration (PRA), rotational velocity (PRV), and head impact power ratio (HIP Ratio) while adjusting for session type and ball delivery. Two hundred eighty-nine headers (n = 212 standing, n = 77 jumping) were analyzed. Technique score (p = 0.043) and the technique score - session type interaction (p = 0.004) were associated with PRA of standing headers, whereby each 10-unit increase in technique score was associated with an 8.6% decrease in PRA during games but a 5.1% increase in PRA during practices. Technique was not significantly associated with any other kinematic metrics; however, peak kinematics tended to decrease as technique score increased. LASSO regression identified back extension and shoulder/hip alignment as important predictors of peak kinematics. Additional research on heading technique and head acceleration is recommended.","PeriodicalId":74767,"journal":{"name":"Science & medicine in football","volume":" ","pages":"341-350"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41161847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Concurrent validity and between-unit reliability of a foot-mounted inertial measurement unit to measure velocity during team sport activity. 用脚踏惯性测量装置测量团队体育活动中的速度的并发有效性和装置间可靠性。

Science & medicine in football Pub Date : 2024-11-01 Epub Date: 2023-07-18 DOI: 10.1080/24733938.2023.2237493

Naomi Myhill, Dan Weaving, Mark Robinson, Steve Barrett, Stacey Emmonds

{"title":"Concurrent validity and between-unit reliability of a foot-mounted inertial measurement unit to measure velocity during team sport activity.","authors":"Naomi Myhill, Dan Weaving, Mark Robinson, Steve Barrett, Stacey Emmonds","doi":"10.1080/24733938.2023.2237493","DOIUrl":"10.1080/24733938.2023.2237493","url":null,"abstract":"The concurrent validity and between-unit reliability of a foot-mounted inertial measurement unit (F-IMU) was investigated during linear and change of direction running drills. Sixteen individuals performed four repetitions of two drills (maximal acceleration and flying 10 m sprint) and five repetitions of a multi-directional movement protocol. Participants wore two F-IMUs (Playermaker) and 10 retro-reflective markers to allow for comparisons to the criterion system (Qualisys). Validity of the F-IMU derived velocity was assessed via root-mean-square error (RMSE), 95% limits of agreement (LoA) and mean difference with 95% confidence interval (CI). Between-unit reliability was assessed via intraclass correlation (ICC) with 90% CI and 95% LoA. The mean difference for instantaneous velocity for all participants and drills combined was -0.048 ± 0.581 m ∙ s-1, the LoA were from -1.09 to -1.186 m ∙ s-1 and RMSE was 0.583 m ∙ s-1. The ICC ranged from 0.84 to 1, with LoA from -7.412 to 2.924 m ∙ s-1. Differences were dependent on the reference speed, with the greatest absolute difference (-0.66 m ∙ s-1) found at velocities above 7 m ∙ s-1. Between-unit reliability of the F-IMU ranges from good to excellent for all locomotor characteristics. Playermaker has good agreement with 3D motion capture for velocity and good to excellent between-unit reliability.","PeriodicalId":74767,"journal":{"name":"Science & medicine in football","volume":" ","pages":"308-316"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10208379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Monitoring the physical demands of training in Rugby League: the practices and perceptions of practitioners. 监测橄榄球联盟训练的体能要求：从业人员的做法和看法。

Science & medicine in football Pub Date : 2024-11-01 Epub Date: 2023-06-27 DOI: 10.1080/24733938.2023.2229281

Sean Hudson, Michael Fish, Matthew Haines, Liam Harper

{"title":"Monitoring the physical demands of training in Rugby League: the practices and perceptions of practitioners.","authors":"Sean Hudson, Michael Fish, Matthew Haines, Liam Harper","doi":"10.1080/24733938.2023.2229281","DOIUrl":"10.1080/24733938.2023.2229281","url":null,"abstract":"The physical demands of elite sport are often monitored with the aim of making evidence-based decisions to enhance performance and reduce injury risk. However, there is limited evidence in rugby league of the monitoring practices and perspectives of practitioners. This study provides a cross-sectional view of practices and perspectives of rugby league practitioners engaged in monitoring the physical demands of training. Practitioners from the Super League, Championship and National Rugby League competitions completed an online survey. Questions related to the tools and measures used to monitor training, along with perceptions of monitoring effectiveness. 'Enhancing performance' was considered the most important factor for monitoring training demands with most practitioners using some form of time motion analysis (e.g., GPS) or accelerometers. Nearly all practitioners combined objective external measures of exercise intensity with subjective measures, of which RPE was most common. The monitoring parameters considered most useful were running metrics (high-speed running, total distance covered, and the number of accelerations). Findings suggest that current practices are mostly supported by evidence from research. There was a preference for internal load monitoring tools that are quick and simple, such as RPE. The extent to which training load was monitored was lesser in some Championship teams compared to those in the other competitions, which might be explained by discrepancies in funding and access to players.","PeriodicalId":74767,"journal":{"name":"Science & medicine in football","volume":" ","pages":"293-300"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9683319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0