Efficacy of using non-linear pedagogy to support attacking players’ individual learning objectives in elite-youth football: A randomised cross-over trial     

Simon J. Roberts  James R. Rudd  Matthew J. Reeves 《Journal of sports sciences》2020,38(11-12):1454-1464

ABSTRACT

The present study examined the efficacy of a coaching curriculum, based on non-linear pedagogy, on improving attacking players’ individual learning objectives (ILOs) in elite-youth football. Participants included 22 attacking players (i.e., centre-forwards, wide-players and attacking midfield players) from a professional football academy in England. The players were randomly appointed to both control (CON) and intervention (INT) periods following baseline measures. The INT (non-linear) and CON (linear) periods were both designed to support the ILOs provided to each player as part of the elite player performance plan. The study adopted a randomised cross-over design and ILOs considered important for attacking players (i.e., strong foot finishing, weak foot finishing, 1-v-1 and decision-making) were evaluated using the Loughborough Shooting Skill Test. The results showed significant differences for INT in 1-v-1 (P< 0.02) and decision-making (P< 0.01). However, there were no significant differences for strong foot finishing, weak foot finishing or time taken. These results support non-linear pedagogy in developing 1-v-1 game play and decision-making but not for technical shooting proficiency.  相似文献   

The Eton Montem custom c. 1750–1844: privilege,pageantry and sanctioned misrule     

Catherine Dille 《Cultural and Social History》2018,15(3):361-377

Montem, a triennial customary march by Eton scholars, consolidated into a public expression of patrician social identity under the patronage of the monarchy in the late eighteenth century. This analysis of Montem’s history traces its development from a boy-led pageant of misrule to a public performance of elite patriotism. The custom, which attracted national attention, sheds new light on boy governance and self-fashioning in the period’s elite schools. This article argues that a study of Montem disrupts the standard historiographical narrative of anarchy and violence in the great schools and suggests that boy culture was more complex than previously acknowledged.  相似文献   

Sport-specific biomechanical responses to an ACL injury prevention programme: A randomised controlled trial     

Jeffrey B. Taylor  Kevin R. Ford  Randy J. Schmitz  Scott E. Ross  Terry A. Ackerman  Sandra J. Shultz 《Journal of sports sciences》2018,36(21):2492-2501

Anterior cruciate ligament (ACL) injury prevention programmes have not been as successful at reducing injury rates in women’s basketball as in soccer. This randomised controlled trial (ClinicalTrials.gov #NCT02530333) compared biomechanical adaptations in basketball and soccer players during jump-landing activities after an ACL injury prevention programme. Eighty-seven athletes were cluster randomised into intervention (6-week programme) and control groups. Three-dimensional biomechanical analyses of drop vertical jump (DVJ), double- (SAG-DL) and single-leg (SAG-SL) sagittal, and double- (FRONT-DL) and single-leg (FRONT-SL) frontal plane jump landing tasks were tested before and after the intervention. Peak angles, excursions, and joint moments were analysed using two-way MANCOVAs of post-test scores while controlling for pre-test scores. During SAG-SL the basketball intervention group exhibited increased peak knee abduction angles (p = .004) and excursions (p = .003) compared to the basketball control group (p = .01) and soccer intervention group (p = .01). During FRONT-SL, the basketball intervention group exhibited greater knee flexion excursion after training than the control group (p = .01), but not the soccer intervention group (p = .11). Although women’s soccer players exhibit greater improvements in knee abduction kinematics than basketball players, these athletes largely exhibit similar biomechanical adaptations to ACL injury prevention programmes.  相似文献   

Alternative assessment of knee joint muscle balance of soccer players through total work-based hamstring: quadriceps ratios     

Felipe Minozzo  Carlos Leonardo Figueiredo Machado  Eurico Nestor Wilhelm  Rafael Grazioli  Ronei Silveira Pinto 《European Journal of Sport Science》2018,18(10):1398-1404

Isokinetic hamstring-to-quadriceps (H:Q) ratios are frequently used to assess knee muscle strength imbalances and risk of injuries/re-injuries. The use of peak torque (PT) or total work (TW) to estimate joint stability may lead to different results because of the differences between these two neuromuscular variables. Thus, the current study aimed to compare the conventional and functional H:Q ratios calculated by PT and TW. Ninety-three male professional soccer players from Brazilian first division teams performed isokinetic concentric and eccentric contractions of the quadriceps and the hamstrings at 60°/s. Muscle strength balance was calculated using the conventional torque ratio (CTR) and conventional work ratio (CWR), functional torque ratio (FTR) and functional work ratio (FWR) were highly and moderately correlated between them (r?=?0.83 and r?=?0.73, respectively). The Wilcoxon statistical test revealed significant differences between CTR and CWR, as well as FTR and FWR (p?T-test demonstrated significant differences in mean CTR–CWR and FTR–FWR, whereas Bland–Altman plots showed non-consistent bias. In addition, the chi-square test demonstrated significant differences between players below the conventional reference values and functional reference values (p?相似文献   

回顾与前瞻: 中国男子篮球职业联赛竞争格局演变特征     

蒋志伟  邱希 《武汉体育学院学报》2019,53(2):89-95

运用ABC分析法对1995-18赛季CBA比赛进行分析，探析CBA竞争格局的演变特征和演变规律。参照CBA各球队竞争实力变化特点，遵循事物发展的规律，将CBA的发展过程划分为4个阶段，追溯各阶段竞争格局的特点，以此归结CBA竞争格局的演变特征，认为：CBA在经历传统强队的滑坡与新兴球队的兴起后，竞争格局发展趋向更加难以预测；竞争格局在经历北强南弱、南强北弱后，正向更加均衡的态势发展；东、西部区域发展不均衡。  相似文献   

The Lived Experiences of Men in a Master's Counseling Program          下载免费PDF全文

Stephanie Crockett  Dena Elghoroury  Melanie Popiolek  Brian Wummel 《Counselor Education & Supervision》2018,57(2):98-115

Using phenomenological methodology, the authors explored the experiences of 11 men in a master's‐level counseling program. Participants described the challenges and advantages of being a minority in number, being in a relational environment, and having an awareness of a patriarchal system. These findings suggest the importance of counselor educator awareness of the unique barriers male students face.  相似文献   

Association between knee-to-hip flexion ratio during single-leg vertical landings,and strength and range of motion in professional soccer players     

Gustavo Leporace  Marcio Tannure  Gabriel Zeitoune  Leonardo Metsavaht  Moacir Marocolo  Alex Souto Maior 《Sports biomechanics / International Society of Biomechanics in Sports》2020,19(3):411-420

Abstract

The aim of this study was to test the correlation between knee-to-hip flexion ratio during a single leg landing task and hip and knee strength, and ankle range of motion. Twenty-four male participants from a professional soccer team performed a continuous single leg jump-landing test during 10s, while lower limb kinematics data were collected using a motion analysis system. After biomechanical testing, maximal isometric hip (abduction, extension, external rotation), knee extension and flexion strength were measured. Maximum ankle dorsiflexion range of motion was assessed statically using the weight bearing lunge test. Pearson correlation coefficients were calculated to determine the associations between the predictor variables (knee and hip strength, and ankle ROM) and the main outcome measure (knee-to-hip flexion ratio). Correlation between knee-to-hip flexion ratio and hip abductors strength was significant (r = ?0.47; p = 0.019). No other significant correlations were observed among the variables (p > 0.05). These results demonstrated that a lower hip abductors strength in male soccer players was correlated with a high knee-to-hip flexion ratio during landing from a single leg jump, potentially increasing knee overload by decreasing energy absorption at the hip. The results provide a novel proposal for the functioning of hip muscles to control knee overload.  相似文献   

核心力量训练在青少年篮球运动员体能训练中的应用研究     

陈彩玉 《当代体育科技》2020,(10):78-79

核心力量训练作为传统力量训练的补充,已经逐渐走入了竞技体育运动训练领域,并取得了理想的应用成效。鉴于此,本文就针对核心力量训练在青少年篮球运动员体能训练中的应用进行了探讨。首先基于对核心力量训练与传统力量训练区别的分析,阐述了核心力量训练在青少年篮球运动员体能训练中的应用价值,然后又进一步梳理归纳了核心力量训练在青少年篮球运动员体能训练中的应用思路,以期能够为青少年篮球运动员体能训练活动的开展提供参考。  相似文献   

我国优秀青少年女子羽毛球运动员身体形态特征研究     

尹少丰  朱〓伟 《广州体育学院学报》2019,(6):83-85

CUBA联赛经过20年的开展，其职业水平和影响力不断提高，对于开展高校篮球运动、储备篮球后备人才、传播校园体育文化及提高高校知名度都起到积极的作用。通过文献资料法、数理统计法、录像观察法和逻辑分析法，对第20届CUBA男子四强在整个赛程的攻防指标进行对比分析，对于四支队伍存在的优劣势，提出合理化建议。  相似文献   

2019年篮联世界杯广州赛区小组赛对中国队的启示     

崔曼峰  赵毅砥 《广州体育学院学报》2020,(1):82-85

2019年国际篮联篮球世界杯在中国圆满举行,广州作为分赛场,承接了西班牙、波多黎各、突尼斯以及伊朗四支代表队的小组比赛6场。通过对广州赛区四支队伍在小组赛中的表现技术进行分析,并对比中国队在本次赛事中的表现,发现中国男篮在备赛与参赛阶段,存在大赛目标不清晰,心理训练与细节训练不足,教练团队执教水平不稳定,篮球基本功不扎实等一系列问题,反映出我国篮球的发展正处于困境。系统地分析广州小组赛中四支队伍的赛况,并与中国队做出对比,有针对性地提出建议,为中国篮球的发展提供参考。  相似文献