中外男子篮球组织后卫传球技术运用对比分析

运用录像观察法、数理统计法等,对伦敦奥运会的中外男篮主力组织后卫的传球技术运用进行比较分析。结果显示:中国组织后卫在传球方式上运用的次数与国外组织后卫有明显的差距;在传球状态上,移动传球次数和跳起传球次数上均落后于国外组织后卫,两者有一定的差距;在传球路线上,直线传球次数落后于国外组织后卫,两者存在较大差距;中国组织后卫在解围性传球次数、攻击性传球次数和助攻次数上均落后于国外组织后卫,但中国组织后卫传球失误较少。     

Sprint kayaking and canoeing performance prediction based on the relationship between maturity status,anthropometry and physical fitness in young elite paddlers

This study aimed to identify the maturity-related differences and its influence on the physical fitness, morphological and performance characteristics of young elite paddlers. In total, 89 kayakers and 82 canoeists, aged 13.69 ± 0.57 years (mean ± s), were allocated in three groups depending on their age relative to the age at peak height velocity (pre-APHV, circum-APHV and post-APHV) and discipline (kayak and canoe). Nine anthropometric variables, a battery of four physical fitness tests (overhead medicine ball throw, countermovement jump, sit-and-reach test and 20 m multistage shuttle run test) and three specific performance tests (1000, 500 and 200 m) were assessed. Both disciplines presented significant maturity-based differences in all anthropometric parameters (except for fat and muscle mass percentage), overhead medicine ball throw and all performance times (pre > circum > post; P < 0.05). Negative and significant correlations (P < 0.01) were detected between performance times, chronological age and anthropometry (body mass, height, sitting height and maturity status), overhead medicine ball throw and sit and reach for all distances. These findings confirm the importance of maturity status in sprint kayaking and canoeing since the more mature paddlers were also those who revealed largest body size, physical fitness level and best paddling performance. Additionally, the most important variables predicting performance times in kayaking and canoeing were maturity status and chronological age, respectively.     

Circadian rhythm effect on physical tennis performance in trained male players

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.     

2011年瑞士女排精英赛中日两队对比研究

自2011年世界女排大奖赛获得第5名起,日本女排显现出强势崛起之势,而中国女排则每况愈下,多次比赛战绩不佳,亚洲霸主地位不复存在。通过对2队比较,探索日本女排逐渐上升的原因和中国女排战绩不佳的根本。通过运用录像统计法、数据对比分析法对2011年瑞士女排精英赛冠军日本队与第3名中国队进行比较,结果表明：日本队在发球、接发球、扣球方面都优于中国队,进攻节奏上明显快于中国队。     

Physical exercises for preventing injuries among adult male football players: A systematic review

Background:Football is the most practised sport in the world and is associated with the risk of injuries in the players.Some studies have been published that identify injury prevention programs,but there is no review of the full body of evidence on injury prevention programs for use by football coaches.The aim of this article was to carry out a systematic review of published studies on injury prevention programs for adult male footballers,identify points of common understanding and establish recommendations that should be considered in the design of injury prevention strategies.Methods:PubMed and EMBASE databases were used to identify relevant published articles using the following keywords:"soccer"AND"injury"AND"prevention".Results:A total of 2512 studies were identified initially,but only 11 studies met the inclusion criteria,and their outcomes are presented.Results revealed that injury prevention programs in football have focused on strength training,proprioceptive training,multicomponent programs(balance,core stability,and functional strength and mobility),and warm-up programs.Conclusion:Based on results from the studies analyzed,football players can lower the incidence of match and training injuries by participating in dynamic warm-up programs that include preventive exercises before games or during training sessions,and by adding strength,balance,and mobility training to the training sessions.     

浅析数字技术对电视画面艺术的丰富

本文介绍了数字技术与电视画面艺术的相互关系,从虚拟现实、画面构图、交互性等三方面阐述了数字技术对电视画面艺术的丰富。     

试论CUBA的社会化功能

本文通过文献法和逻辑分析法,对CUBA与社会发展相联系的社会化以及CUBA与人的发展紧密联系的社会化的内涵分别进行阐述,并分析了CUBA促进这两种形式的社会化功能,以期为中国竞技体育和高等教育的社会化进程提供参考。     

成都市武术健身消费需求研究

文章运用问卷调查和数理统计的方法,对成都市武术健身消费需求现状进行研究后认为:目前成都市武术健身消费水平不高,需求较少,受到消费者基本状况、消费者对武术的偏好度、消费者所能接受的武术消费品的价格等相关因素综合作用的影响。     

2008年奥运会后我国体育经纪人发展对策初探

文章运用文献资料、专家访谈等研究方法,在分析我国体育经纪人发展现状的基础上,提出了2008年奥运会后体育经纪人在我国的发展对策,以促进我国体育经纪人的发展。     

关于徐州高校学生习武兴趣的研究

文章运用问卷调查法、访谈法、文献资料法、数理统计法、逻辑分析等研究方法,对徐州市五所大学500名学生武术兴趣的现状进行了调研分析。结果表明:徐州市大学生对武术很感兴趣,然而选修武术课的人数很少,选修过武术课的学生对武术课的兴趣程度不高。