浅谈毽球脚攻球技术的训练方法

文章通过对毽球脚攻球技术的运用、研究和探索,结合现代毽球运动中脚攻球的技术特点,介绍了毽球脚攻球技术的训练原则、训练步骤、训练方法等。毽球运动是具有鲜明特点的运动项目,因此,要根据它的自身特征来进行训练,而脚攻球技术是毽球运动中的重点和难点,教练员和运动员要着重进行局部训练,以提高运动员的竞技水平。     

原地双手后抛实心球的技术分析与训练方法研究——关于体育高考术科考试项目分析

原地双手后抛实心球是广西体育高考术科考试中必考的一个项目,文章通过对原地双手后抛实心球技术进行详细分析,并针对它的动作结构进行系统的科学训练,以期为提高考生考试成绩和广大体育教师的业余训练提供可靠依据。     

球类领会教学法的理论阐释与实践探索——以篮球教学为例

在建构主义学习理论和认知学习双向理论的导引下,球类领会教学法形成了项目导入、比赛赏识、战术理解、临场决断能力培养、技能执行和运动表现等单元构成的教学流程与模式.领会教学法学习效果的评量采用技能评量、认知评量、情感评量与社会行为评量等方法.领会教学法具有运动情境中的乐趣激发、学生技能战术的自主性提升、游戏比赛的系统设计、战术与技能的双向驱动和益于终身运动习惯养成等特色,对摆脱以运动技术传习为核心的旧观念、形成球类教学新思路具有典型的示范性.     

新技术新工艺在铁路客运专用线隧道回填灌浆的运用

介绍了采用国内先进的螺杆式灌浆泵,对武广铁路客运专用线SDIV标中铁十一局的牛岭隧道的回填灌浆施工处理,工期40天,经过探孔检查和雷达检测,顶部空洞回填基本密实,满足灌浆要求。节约、高效、快速、高质量地完成了任务．保证了该隧道的顺利交验。     

多球发球机应用于乒乓球技术考核的实验研究

通过应用仪器测试和人工测试方法,对体育院系乒乓球技术考核的结果进行相关分析,对多球发球机应用于乒乓球技术考核进行了探索,以探求乒乓球技术考核的标准化途径。证明应用多球发球机进行乒乓球基本技术考核是可行的,它具有连续性强、长时间持续高强度工作、能保持送球质量的统一和稳定性,减小送球的随意性和主观性。同时提出其应用于技术考核的不足之处,探讨发球机用于技术考核的适宜对象和适宜内容。     

对普通高校乒乓球普修课的多球教学研究

采用文献资料法、实验法、访谈法等方法,以普修乒乓球课的学生为对象,对学生的乒乓球多球教学进行研究,目的在于通过多球训练方法,全面提高学生的技术水平。研究结果表明多球练习可以加强单位时间训练的密度、强度,做到反复练习,对于提高基本技术和步法效果明显。     

Using improvisational exercises in general education to advance creativity,inventiveness and innovation

Creativity is the process of generating something new or original that has value to an individual, a group, an organization, an industry or a society. Improvisational theater techniques are used to enhance creative thinking and action in a variety of disciplines as broad as education, theater, dance, painting, writing and music, law, business, and most recently, entrepreneurship. This paper describes an academic setting that draws upon the definition, techniques and improvisational methods as prerequisites for a progression of increased experiences of idea generation, new product invention and innovation. Improvisation is used as a critical ingredient to enhance creativity for undergraduate liberal arts students in a freshman general studies course leading to student product development and field-based innovations.     

Novel mathematical model to estimate ball impact force in soccer

To assess ball impact force during soccer kicking is important to quantify from both performance and chronic injury prevention perspectives. We aimed to verify the appropriateness of previous models used to estimate ball impact force and to propose an improved model to better capture the time history of ball impact force. A soccer ball was fired directly onto a force platform (10 kHz) at five realistic kicking ball velocities and ball behaviour was captured by a high-speed camera (5,000 Hz). The time history of ball impact force was estimated using three existing models and two new models. A new mathematical model that took into account a rapid change in ball surface area and heterogeneous ball deformation showed a distinctive advantage to estimate the peak forces and its occurrence times and to reproduce time history of ball impact forces more precisely, thereby reinforcing the possible mechanics of ‘footballer’s ankle’. Ball impact time was also systematically shortened when ball velocity increases in contrast to practical understanding for producing faster ball velocity, however, the aspect of ball contact time must be considered carefully from practical point of view.     

Match-derived relative pitch area changes the physical and team tactical performance of elite soccer players in small-sided soccer games

Small-sided games (SSGs) are used in training sessions to prepare for full-sized matches. For the same number of players, smaller pitch sizes result in decreased physical performance and shorter interpersonal distances. A relative pitch area derived from the full-sized match results in larger pitch sizes and this may increase the fit between SSGs and full-sized matches. This study aimed to investigate SSGs with a traditional small pitch and a match-derived relative pitch area in youth elite soccer players. Four age categories (under-13, under-15, under-17 and under-19) played 4 vs. 4 plus goalkeepers on a small (40x30m, 120m² relative pitch area) and large pitch (68x47m, 320m² relative pitch area). The number of games per age category ranged 15–30. Positional data (LPM-system) were collected to determine physical (total distance covered, high intensity distance and number of sprints) and team tactical (inter-team distance, LPW-ratio, surface area, stretch indices, goalkeeper-defender distance) performance measures and tactical variability. On a large pitch, physical performance significantly increased, inter-team and intra-team distances were significantly larger and tactical variability of intra-team distance measures significantly increased. The match-derived relative pitch area is an important training manipulation and leads to changes in physical and tactical performance 4 vs. 4 plus goalkeepers.     

Utilization of cues in action anticipation in table tennis players

ABSTRACT

By manipulating the congruency between body kinematics and subsequent ball trajectory, this study investigated the anticipation capabilities of regional-level, college-level, and novice table tennis players using a full video simulation occluder paradigm. Participants watched footage containing congruent, incongruent, or no ball trajectory information, to predict the landing point of the ball. They were required to choose between two potential locations to make their prediction. Percent accuracy and relevant indexes (d-prime, criterion, effect size) were calculated for each condition. Results indicated that experienced table tennis players (both regional and college players) were superior to novices in the ability to anticipate ball trajectory using kinematic information, but no difference was found between regional-level and college-level players. The findings of this study further demonstrate the superior anticipation ability of experienced table tennis players. Furthermore, the present result suggests that there may be a certain “baseline” level of motor experience in racquet sports for effective action anticipation, while the addition of further motor experience does not appear to assist direction anticipation.