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   

蔬菜栽培课程产学合作教育的实践与思考     

杨安平  尚丽蓉  王宽祥  王智民 《杨凌职业技术学院学报》2005,4(2):54-57

选择具有日光温室、塑料大棚、中棚及露地等多种生产方式，蔬菜种类较多，面积较大，种植蔬菜历史较长，交通便利的村寨作为蔬菜栽培课程产学合作教育的基地。把学生分配到农户，每户3～4名学生为一组，与蔬菜生产实际紧密结合，让学生接受培养土的配制，种子处理与播种，苗床管理，定植，田间管理及嫁接育苗等环节的训练。结果表明：学生获得了两个层面的训练。在第一个层面上，学生熟练掌握了蔬菜栽培基本环节的技术要求和要领，动手能力得到明显提高，培养了学生的基本技能；在第二个层面上，学生掌握了蔬菜设施栽培、无公害生产综合配套等高层次技术，培养了学生综合技术应用能力。今后应特别注意学生和生产者(企业或农户)的双向参与，信息的双向传递，学校与生产者(或企业或农户)双赢，以及培养学生创新能力即第三个层面的训练。  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   

加强电子技术实验课改革的几项措施     

张凌 《中国教育发展研究杂志》2006,3(6):70-70

文章指出了目前高校电子技术实验课中普遍存在的一些问题以及加强本课程实验改革的必要性，并提出了几项改革措施。  相似文献   

中小学音乐教师:新课程实施的调适     

杨光白 《黔南民族师范学院学报》2003,23(1):99-102

音乐基础课程改革对中小学音乐教师提出了全新的要求。本文从教师理念的更新、教师自身知识技能的调适、教学模式的转换三方面，论述了中小学音乐教师在新课程实施过程中应进行的调整与适应。  相似文献   

虚拟制造技术及其在制造业中的应用     

阎洪波  赵冬晗 《宁波职业技术学院学报》2006,10(2):58-61

从虚拟制造的形成背景,介绍了虚拟制造的特点、分类;并对虚拟制造的核心技术及理论体系等多方面进行详细阐述。最后就虚拟制造的应用和虚拟制造技术的发展潜力和国内外现状进行系统介绍。  相似文献   

将实验安全教育贯穿于实验教学的始终     

刘畅  张高文  朱小龙 《教育教学论坛》2019,(24):259-260

高校实验安全教育是高校实验教学和科研工作的一项重要内容,如何将实验安全教育开展好,并让学生学有所获,是当前的重要研究方向。这里针对基础化学实验教学中安全教育方面的问题,提出了几点有效举措,希望将安全教育融入教学的各个环节,使学生从安全意识﹑实验习惯﹑安全操作等几个方面,增强自身的实验安全能力,从源头管控危险实验事件的发生。  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