Discriminating talent-identified junior Australian football players using a video decision-making task     

Carl T. Woods  Annette J. Raynor  Lyndell Bruce  Zane McDonald 《Journal of sports sciences》2016,34(4):342-347

This study examined if a video decision-making task could discriminate talent-identified junior Australian football players from their non-talent-identified counterparts. Participants were recruited from the 2013 under 18 (U18) West Australian Football League competition and classified into two groups: talent-identified (State U18 Academy representatives; n = 25; 17.8 ± 0.5 years) and non-talent-identified (non-State U18 Academy selection; n = 25; 17.3 ± 0.6 years). Participants completed a video decision-making task consisting of 26 clips sourced from the Australian Football League game-day footage, recording responses on a sheet provided. A score of “1” was given for correct and “0” for incorrect responses, with the participants total score used as the criterion value. One-way analysis of variance tested the main effect of “status” on the task criterion, whilst a bootstrapped receiver operating characteristic (ROC) curve assessed the discriminant ability of the task. An area under the curve (AUC) of 1 (100%) represented perfect discrimination. Between-group differences were evident (P < 0.05) and the ROC curve was maximised with a score of 15.5/26 (60%) (AUC = 89.0%), correctly classifying 92% and 76% of the talent-identified and non-talent-identified participants, respectively. Future research should investigate the mechanisms leading to the superior decision-making observed in the talent-identified group.  相似文献   

Neuromuscular and technical abilities related to age in water-polo players     

Fabio De Siati  Guillaume Laffaye  Giorgio Gatta  Antonio Dello Iacono  Johnny Padulo 《Journal of sports sciences》2016,34(15):1466-1472

Testing is one of the important tasks in any multi-step sport programme. In most ball games, coaches assess motor, physical and technical skills on a regular basis in early stages of talent identification in order to further athletes’ development. The purpose of the study was to investigate anthropometric variables and vertical jump heights as a free throw effectiveness predictor in water-polo players of different age groups. Two hundred and thirty-six young (10–18 years) male water-polo players partitioned into three age groups underwent anthropometric variables’ measures and squat- and countermovement-jump tests, and performed water-polo free throws. Anthropometric variables, vertical jump heights and throw speed – as a proxy for free throw effectiveness – resulted different over age groups. Particularly, throw speed changed from 9.28 to 13.70 m · s^?1 (+48%) from younger to older players. A multiple-regression model indicated that body height, squat-jump height and throw time together explain 52% of variance of throw speed. In conclusion, tall height, high lower limb power and throwing quickness appeared to be relevant determinants for effective free throws. Such indications can help coaches during talent identification and development processes, even by means of novel training strategies. Further research is needed over different maturity statuses.  相似文献   

The effects of physical contact type on the internal and external demands during a rugby league match simulation protocol     

Jonathan P. Norris  Jamie Highton  Stephen F. Hughes  Craig Twist 《Journal of sports sciences》2016,34(19):1859-1866

The aim of this study was to investigate how the type of contact influences physiological, perceptual and locomotive load during a simulated rugby league match. Eleven male university rugby league players performed two trials of the rugby league movement simulation protocol for interchange forwards with a traditional soft tackle bag and a weighted tackle sled to replicate contact demands. The interchange forward-specific simulation was chosen given the contact frequency is higher for this group of players compared to whole match players. Locomotive rate, sprint speed, tackle intensity, heart rate (HR) and rating of perceived exertion were analysed during the first and second bouts that replicated two ~23 min on-field passages. Countermovement jump (CMJ) was measured before and immediately after each trial. More time was spent in heart rate zone between 91 and 100% HR_peak during the first (effect size ± 90% confidence interval: 0.44 ± 0.49) and second bouts (0.44 ± 0.43), and larger (0.6 ± 0.69) decrements in CMJ performance were observed during the sled trial (5.9, s = 4.9%) compared to the bag trial (2.6, s = 5.4%). Changing the type of contact during the match simulation subtly altered both the internal and external loads on participants. Using a standard tackle bag results in faster sprint speed to contact, but lower overall high-intensity running. Conversely, a heavier tackle object increases the internal load and results in greater lower limb neuromuscular fatigue as reflected by the decrease in CMJ performance.  相似文献   

2014年女排世锦赛中国女排主攻队员扣球技术分析     

蔡宗森 《福建体育科技》2016,(1):35-37

运用文献资料法、比较分析法、数理统计法、录像分析法、逻辑分析法对中国女排在2014年世界女排锦标赛13场对抗赛中的主力主攻手的扣球技术统计分析,认为中国女排主攻手进攻位置比较单一,提出两主攻手在平时训练中应加强各种训练等建议。  相似文献   

高校办高水平运动队发展定位的思考          下载免费PDF全文

闫燕 《体育科研》2016,(3):19-22

运用文献资料、专家访谈、实地调查等研究方法,通过对高校高水平运动队发展现状的基本判断进行分析,找出目前存在的主要问题,探索适合我国高校办高水平运动队的发展定位,为我国高校高水平运动队建设的可持续发展提供参考依据。  相似文献   

江苏省政府购买公共体育服务的方式、问题及对策研究     

焦亮亮  张玉超  周敏 《辽宁体育科技》2016,(1):1-4

采用文献资料法和逻辑分析法,对江苏省政府购买公共体育服务的模式进行研究。结果表明：江苏省政府购买公共体育服务缺乏完善的法律制度保障、科学有效的监督机制、专业规范的评估机制、有效的供给市场竞争。针对这些问题提出加快法制建设,适时启动地方立法;建立完善的监督体制,提高监督能力;完善评估机制建设,提高评估公信力度;加大政策扶植力度,培育服务购买市场等措施。  相似文献   

地方应用型本科院校师资队伍建设研究     

祝成成 《教育教学论坛》2019,(16):12-13

我国高等教育发展的新形势,对地方高校教师队伍建设提出了新要求。通过分析地方应用型高校教师队伍建设中存在教师资队伍结构局部不合理,"双师双能型"教师缺乏,教师责任意识不强,进行教育科学研究的积极性较低等问题,提出了相应的对策。  相似文献   

论江苏境内的地方菜肴风味   总被引：1，自引：0，他引：1  

周欣 《扬州职业大学学报》2006,10(4):5-8

江苏省区内的饮食文化研究在新时期有了长足的进展,存在的分歧意见主要是对江苏省境内饮食文化的区域划分、饮食文化的形成渊源、地区的辐射力大小、核心区域所在地等有不同见解。江苏境内的四大风味菜可以称得上“菜系”的只有淮扬菜和苏锡菜;江苏境内的菜系划分与方言区有密切关系;从对全国乃至全世界的历史和现实影响分析,江苏菜的代表应是淮扬菜,淮扬菜的代表是扬州菜。  相似文献   

Effect of repeat-sprint training in hypoxia on post-exercise interleukin-6 and F2-isoprostanes     

Paul S. R. Goods  Brian Dawson  Grant J. Landers  Christopher J. Gore  Kevin Croft  Peter Peeling 《European Journal of Sport Science》2016,16(8):1047-1054

This investigation examined the oxidative stress (F₂-Isoprostane; F₂-IsoP) and inflammatory (interleukin-6; IL-6) responses to repeat-sprint training in hypoxia (RSH). Ten trained male team sport athletes performed 3(sets)*9(repetitions)*5?s cycling sprints in simulated altitude (3000?m) and sea-level conditions. Mean and peak sprint power output (MPO and PPO) were recorded, and blood samples were collected pre-exercise, and again at 8 and 60?min post-exercise. Both MPO and PPO were significantly reduced in hypoxia (compared to sea-level) in the second (MPO: 855?±?89 vs. 739?±?95?W, p?=?.006; PPO: 1024?±?114 vs. 895?±?112?W, p?=?.010) and third (MPO: 819?±?105 vs. 686?±?83?W, p?=?.008; PPO: 985?±?125 vs. 834?±?99?W, p?=?.008) sets, respectively. IL-6 was significantly increased from pre- to 1?h post-exercise in both hypoxia (0.7?±?0.2 vs. 2.4?±?1.4?pg/mL, p?=?.004) and sea-level conditions (0.7?±?0.2 vs. 1.6?±?0.3?pg/mL, p?d?=?0.80) suggesting higher IL-6 levels of post-hypoxia. F₂-IsoP was significantly lower 1?h post-exercise in both the hypoxic (p?=?.005) and sea-level (p?=?.002) conditions, with no differences between trials. While hypoxia can impact on exercise intensity and may result in greater post-exercise inflammation, it appears to have little effect on oxidative stress. These results indicate that team sport organisations with ready access to hypoxic training facilities could confidently administer RSH without significantly increasing the post-exercise inflammatory or oxidative stress response.  相似文献   

Understanding the consequences of victory amongst sport spectators: The mediating role of BIRGing     

Iouri Bernache-Assollant  Yves Chantal  Patrick Bouchet  Marie-Françoise Lacassagne 《European Journal of Sport Science》2016,16(6):719-725

Prior work on the relationships between team identification and spectators’ reactions to one's team victory has largely neglected the potential effects of mediating variables. In this research, we proposed that the process of Basking in Reflected Glory [BIRGing – the tendency to reduce the distance between oneself and one's team; Cialdini, R. B., Bordon, R. J., Thorne, A., Walker, M. R., Freeman, S., &; Sloan, L. R. (1976). Basking in reflected glory: Three (football) field studies. Journal of Personality and Social Psychology, 34, 366–375] would lead spectators to almost take ownership of victories and share its benefits, thereby impacting their sense of national belonging in a positive manner. To this end, participants (N?=?73) were asked to watch an edited video clip showing a victory of the French national rugby team playing against South Africa. As expected, results revealed that BIRGing mediated the relationship between team identification and one's sense of national belonging. In closing, a number of implications are discussed along with future research avenues pertaining to the sport spectatorship literature.  相似文献