论木球与高尔夫     

王晓青  王群 《辽宁体育科技》2009,31(5):94-95

从术球与高尔夫的起源、技术特征、运动特点、心理特点等方面进行比较分析,旨在为术球在国内乃至世界各地进一步推广和发辰提供参考。  相似文献   

我国足球教练员培训现状及对策研究          下载免费PDF全文

刘晓宇 《武汉体育学院学报》2009,43(10):70

分析了我国教练员培训组织管理体制及岗位培训体制,并与国外足球教练员的培训等级和培训机构进行了比较,指出了我国教练员培训体系中存在的不足,提出了完善我国足球教练员培训体系的对策:建立科学的分级培训机制,聘请国外优秀教练员参与青少年教练的培训,组织青少年教练员赴国外培训,利用其他社会力量实施培训,不断扩大初级教练员的培训面,增加青少年基层教练员培训班的数量,实行多元化的培训收费制度,编写适合我国实际情况的培训教材,严格教练员的注册、考核制度.  相似文献   

不同类型运动技能保持特征的比较研究   总被引：1，自引：0，他引：1  

黄志剑  邵国华 《体育科学》2008,28(9)

以某大学普通专业107名学生为被试,考察不同类型运动技能的保持特征,并比较其差异。实验设计不同组织水平的武术套路项目(n=62)和皮艇球项目(n=45)。每组被试在完成9周36学时的技能学习任务后进行评分。随后随机分为5个小组,将1~5小组被试随机分配到1,2,6,15,31天的复测中,收集相应时间点的技能保持量,最后绘出保持率曲线。实验研究的结果表明:随着时间间隔的增加,不同组织水平动作技能的保持特征有所不同,并对这些差异存在的可能原因进行理论分析。  相似文献   

The effects of attentional focus instructions on punching velocity and impact forces among trained combat athletes     

Israel Halperin  Dale W. Chapman  David T. Martin  Chris Abbiss 《Journal of sports sciences》2017,35(5):500-507

Research indicates that instructing athlete’s to focus on bodily movements (internal focus of attention [IFA]) may hinder performance, whereas instructing them to focus on the movement outcome (external focus of attention [EFA]) often enhances performance. Despite the importance of instructions in striking combat sports, limited research has examined the influence of IFA and EFA on performance in well-trained combat athletes. This study investigated the effects of different instructional cues on punching velocity (m · s^?1) and normalised impact forces (N · kg^?1) among intermediate (n = 8) and expert (n = 7) competitive boxers and kickboxers. Athletes completed three rounds of 12 maximal effort punches delivered to a punching integrator on three separate days. Day one was a familiarisation session with only control instructions provided. In the following two days athletes randomly received IFA, EFA or control instructions prior to each of the three rounds. Athletes punching with EFA were 4% faster and 5% more forceful than IFA (P < 0.05), and 2% faster and 3% more forceful than control (P < 0.05). Furthermore, experts punched 11% faster and with 13% greater force compared with intermediate athletes (P < 0.05). EFA led to a positive effect on punching performance and should be favoured over IFA and control instructions.  相似文献   

Circadian rhythm effect on physical tennis performance in trained male players     

Álvaro López-Samanes  Diego Moreno-Pérez  José L. Maté-Muñoz  Raúl Domínguez  Jesús G. Pallarés  Ricardo Mora-Rodriguez 《Journal of sports sciences》2017,35(21):2121-2128

To determine the effect of circadian rhythm on neuromuscular responses and kinematics related to physical tennis performance, after a standardised warm-up, 13 highly competitive male tennis players were tested twice for serve velocity/accuracy (SVA), countermovement vertical jump (CMJ), isometric handgrip strength (IS), agility T-test (AGIL) and a 10-m sprint (10-m RUN). In a randomised, counter-balance order, tennis players underwent the test battery twice, either in the morning (i.e., AM; 9:00 h) and in the afternoon (i.e., PM; 16:30 h). Paired t-tests were used to analyse differences due to time-of-day in performance variables. Comparison of morning versus afternoon testing revealed that SVA (168.5 ± 6.5 vs. 175.2 ± 6.1 km · h^?1; P = 0.003; effect size [ES] = 1.07), CMJ (32.2 ± 0.9 vs. 33.7 ± 1.1 cm; P = 0.018; ES = 1.46), AGIL (10.14 ± 0.1 vs. 9.91 ± 0.2 s; P = 0.007; ES = 1.23) and 10-m RUN time (1.74 ± 0.1 vs. 1.69 ± 0.1 s; P = 0.021; ES = 0.67) were significantly blunted during the morning testing. However, IS was not affected by time-of-day (P = 0.891). Thus, tennis performance may be reduced when competing in the morning in comparison to early evening. Therefore, coaches and tennis players should focus on schedule the SVA, power, speed and agility training sessions in the afternoon.  相似文献   

单源三站外辐射源雷达目标探测性能     

周建卫  李道京  胡烜 《中国科学院大学学报》2017,34(4):422-430

论述全向外辐射源雷达空中目标探测系统的主要问题及系统体制损失。针对单源单站（SISO）和单源三站（SITO）两种工作方式,在接收天线阵元数相同的情况下分析探测距离和定位精度。在单源三站条件下推导直角坐标系中的目标速度矢量表达式,并分析速度测量精度。研究结果表明,在一定条件下,单源三站组网方式的空间覆盖范围与单源单站相当,且具有平面定位精度较高,可获得目标速度矢量和技术实现难度小的特点。  相似文献   

Small Nation,Big Sport: Basque Ball – Its Past and Present Cultural Meanings for the Basques     

Bartosz Prabucki 《国际体育史杂志》2017,34(10):943-956

Abstract

The Basques are a nation living in the Basque Country – a territory that is divided between two states – France and Spain. Isolated in the mountainous terrain they have preserved their original culture and collective identity. However, they still need to struggle for recognition, using some elements of their own culture to promote their identity and reject their status as a peripheral region of Spain or France. One of such elements is sport, especially so-called ‘traditional sports’ which this nation has preserved over centuries. The aim of this paper is thus to analyze one example of such a sport – Basque ball and its historical and present situation, connections with other elements of culture and its socio-cultural importance for the Basques.  相似文献   

平衡训练影响踝关节功能稳定性的研究     

李羚 《福建体育科技》2017,36(1)

目的:对踝关节不稳人群进行不同方式的平衡训练,以提高踝关节平衡控制能力及稳定性,减少踝关节损伤的发生几率;比较不同平衡训练方法对改善踝关节稳定性的实用性及优劣性。方法:进行为期3周的Biodex Balance System仪器及Bosu平衡球训练,测试踝关节稳定性。结果及结论:结果显示,Biodex Balance System仪器和Bosu平衡球都能显著提高个体踝关节稳定性及方向控制能力;Biodex Balance System仪对踝关节稳定性的提高更为明显。  相似文献   

Assessment of leg muscles mechanical capacities: Which jump,loading, and variable type provide the most reliable outcomes?     

Amador García-Ramos  Belén Feriche  Alejandro Pérez-Castilla  Paulino Padial  Slobodan Jaric 《European Journal of Sport Science》2017,17(6):690-698

This study aimed to explore the strength of the force–velocity (F–V) relationship of lower limb muscles and the reliability of its parameters (maximum force [F₀], slope [a], maximum velocity [V₀], and maximum power [P₀]). Twenty-three men were tested in two different jump types (squat and countermovement jump: SJ and CMJ), performed under two different loading conditions (free weight and Smith machine: Free and Smith) with 0, 17, 30, 45, 60, and 75?kg loads. The maximum and averaged values of F and V were obtained for the F–V relationship modelling. All F–V relationships were strong and linear independently whether observed from the averaged across the participants (r?≥?0.98) or individual data (r?=?0.94–0.98), while their parameters were generally highly reliable (F₀ [CV: 4.85%, ICC: 0.87], V₀ [CV: 6.10%, ICC: 0.82], a [CV: 10.5%, ICC: 0.81], and P₀ [CV: 3.5%, ICC: 0.93]). Both the strength of the F–V relationships and the reliability of their parameters were significantly higher for (1) the CMJ over the SJ, (2) the Free over the Smith loading type, and (3) the maximum over the averaged F and V variables. In conclusion, although the F–V relationships obtained from all the jumps tested were linear and generally highly reliable, the less appropriate choice for testing the F–V relationship could be through the averaged F and V data obtained from the SJ performed either in a Free weight or in a Smith machine. Insubstantial differences exist among the other combinations tested.  相似文献   

对推铅球最后用力技术的再认识   总被引：1，自引：0，他引：1  

冯晓东  毕长年 《首都体育学院学报》1999,(2)

从投掷技术原理来讲, 器械飞行的远度主要取决于出手初速度, 而最后用力阶段是其获得速度的主要来源。为适应现代推铅球技术的发展, 文章扼要地提出最后用力开始的时机, 分析影响最后用力效果的因素, 并针对性地提出改进最后用力效果的途径, 对铅球最后用力阶段在技术和理论方面做点滴补充。  相似文献