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1.
AbstractThis study examined the influence of match-related fatigue on physical and technical skill performance in ball playing positions at two different levels of rugby league competition. Time-motion analyses were performed using global positioning systems from 6 elite National Rugby League (NRL) and 11 junior elite National Youth Competition (NYC) players from 45 matches. A standardised 5-point technical coding criteria was used to qualitatively assess skill involvements during match-play. The distance travelled in the 0–5 and 40–45 min period were significantly higher compared to the 30–35, 35–40, 70–75 and 75–80 min periods (P < 0.001). Skill rating and involvements were higher in the 0–5 and 40–45 min compared to 70–75 and 75–80 min periods (P < 0.001 and P < 0.001, respectively).There was no significant difference in the number of physical collisions between the 5-min periods (P = 0.051). Following the peak 5-min bout of exercise intensity there were reductions in distance (P < 0.001), quality of skill involvements (P < 0.001), number of involvements (P < 0.001) and collisions (P < 0.001). Elite NRL and NYC “ball players” exhibit reductions in physical performance towards the end of matches and following brief periods of intense exercise. There also appears to be a reduction in technical performance for NRL and NYC ball players, which may be attributable to match-related fatigue. 相似文献
2.
Abstract The aim of this study was to analyse the influence of playing tactics, opponent interaction and situational variables on achieving score-box possessions in professional soccer. The sample was constituted by 908 possessions obtained by a team from the Spanish soccer league in 12 matches played during the 2009–2010 season. Multidimensional qualitative data obtained from 12 ordered categorical variables were used. Sampled matches were registered by the AMISCO PRO® system. Data were analysed using chi-square analysis and multiple logistic regression analysis. Of 908 possessions, 303 (33.4%) produced score-box possessions, 477 (52.5%) achieved progression and 128 (14.1%) failed to reach any sort of progression. Multiple logistic regression showed that, for the main variable “team possession type”, direct attacks and counterattacks were three times more effective than elaborate attacks for producing a score-box possession (P < 0.05). Team possession originating from the middle zones and playing against less than six defending players (P < 0.001) registered a higher success than those started in the defensive zone with a balanced defence. When the team was drawing or winning, the probability of reaching the score-box decreased by 43 and 53 percent, respectively, compared with the losing situation (P < 0.05). Accounting for opponent interactions and situational variables is critical to evaluate the effectiveness of offensive playing tactics on producing score-box possessions. 相似文献
3.
We identified the perceptual–cognitive skills and player history variables that differentiate players selected or not selected into an elite youth football (i.e. soccer) programme in Australia. A sample of elite youth male football players (n?=?127) completed an adapted participation history questionnaire and video-based assessments of perceptual–cognitive skills. Following data collection, 22 of these players were offered a full-time scholarship for enrolment at an elite player residential programme. Participants selected for the scholarship programme recorded superior performance on the combined perceptual–cognitive skills tests compared to the non-selected group. There were no significant between group differences on the player history variables. Stepwise discriminant function analysis identified four predictor variables that resulted in the best categorization of selected and non-selected players (i.e. recent match-play performance, region, number of other sports participated, combined perceptual–cognitive performance). The effectiveness of the discriminant function is reflected by 93.7% of players being correctly classified, with the four variables accounting for 57.6% of the variance. Our discriminating model for selection may provide a greater understanding of the factors that influence elite youth talent selection and identification. 相似文献
4.
Abstract In this study, we investigated the relationship between physiological, anthropometric, and skill qualities and playing performance in professional rugby league players. Fifty-eight high-performance rugby league players underwent measurements for anthropometry (height, body mass, sum of seven skinfolds), physiological (speed, change of direction speed, lower body muscular power, repeated-sprint ability, prolonged high-intensity intermittent running ability, and estimated maximal aerobic power), technical skill (tackling proficiency, draw and pass proficiency), and perceptual skill (reactive agility, pattern recall, pattern prediction) qualities. National Rugby League matches were coded for attacking (e.g. line breaks, try assists, etc.) and defensive (e.g. missed tackles, tackling efficiency, etc.) statistics commonly used to assess rugby league playing performance. The number of line break assists was significantly associated (P < 0.05) with greater playing experience (r = 0.36), dual-task draw and pass proficiency (r = 0.54), reactive agility (r = 0.29), and pattern recall (r = 0.32) and prediction (r = 0.28) ability, while faster speed over 40 m (r = ?0.42) was associated (P < 0.05) with a higher number of tries scored. Greater age and playing experience, better lower body muscular power, and faster 10 m and 40 m speed were significantly associated (P < 0.05) with the number of tackle attempts (positive), tackles completed (positive), and proportion of missed tackles (negative). These findings demonstrate that well-developed physical and skill qualities are associated with effective playing performance in National Rugby League players. 相似文献
5.
Abstract This study investigated the relative importance of physiological, anthropometric, and skill qualities to team selection in professional rugby league. Eighty-six high performance rugby league players underwent measurements of anthropometric (height, body mass, sum of seven skinfolds), physiological (speed, change of direction speed, lower body muscular power, repeated-sprint ability, prolonged high-intensity intermittent running ability, and maximal aerobic power), technical skill (tackling proficiency, draw and pass proficiency), and perceptual skill (reactive agility, pattern recall, pattern prediction) qualities. A linear discriminant analysis was also conducted comparing those players successful in gaining selection into the professional National Rugby League team with those not selected to determine which, if any, of these qualities could predict selection. Players selected to play in the first National Rugby League game of the season were older, more experienced, leaner, had faster 10m and 40m sprint times, and superior vertical jump performances, maximal aerobic power, tackling proficiency and dual-task draw and pass ability than non-selected players. Skinfold thickness and dual-task draw and pass proficiency were the only variables that contributed significantly (P < 0.05) to the discriminant analysis of selected and non-selected players. These findings suggest that selected physiological, anthropometric, and skill qualities may influence team selection in professional rugby league. 相似文献
6.
篮球技术统计的重要意义就是分析比赛的具体情况,进而进行针对性的教学与训练.但目前的研究较少,有的也仅具备统计功能而无分析功能.运用国内外篮球比赛分析理论构建篮球比赛技术统计分析系统,实现了统计分析功能. 相似文献
7.
对中学体育课现状的反思 总被引：3，自引：0，他引：3
徐大成 《体育科技文献通报》2010,18(11):56-58
多数学生从初中直到高中毕业,体育课每周两次,总的学时数加起来至少有七、八百个学时,但一路走下来,发现很多学生都是“体育盲”。这其中的原因颇多,其客观原因本文不做评说,单从主观原因,如教学理念（教学目标）、体育知识的属性（教学内容）、教师自身素质、体育课定位几个方面进行阐述,进而提出选项上课是一种较为理想的体育教学模式。 相似文献
8.
通过对比试验和高速摄影及影片解析等方法,获取客观的指标进行定量分析,研究运动心理定向对掌握运动技术和提高专项成绩的作用。合理的专项心理结构—定向有利于发挥助跑速度,促进专项技术和专项成绩的提高;在标枪技术投掷步和最后用力教学中,应注意培养“大—小-较大-最小”助跑节奏的心理定向。研究结果提示：在技术教学中,应重视正确的心理结构-定向培养。 相似文献
9.
This study investigated the associations between fundamental athletic movement and physical fitness in junior Australian football (AF). Forty-four under 18 players performed a fundamental athletic movement assessment consisting of an overhead squat, double lunge, single leg Romanian deadlift and a push up. Movements were scored on three assessment criterions using a three-point scale. Additionally, participants performed five physical fitness tests commonly used for talent identification in AF. A Spearman’s nonparametric correlation matrix was built, with correlation coefficients being visualised using a circularly rendered correlogram. Score on the overhead squat was moderately positively associated with dynamic vertical jump height on left (rs = 0.40; P ≤ 0.05) and right (rs = 0.30; P ≤ 0.05) leg take-off, stationary vertical jump (rs = 0.32; P ≤ 0.05) and negatively associated with 20-m sprint time (rs = ?0.35; P ≤ 0.05). Score on the double lunge (left/right side) was moderately positively associated with the same physical fitness tests as well as score on the multistage fitness test. Results suggest that improvements in physical fitness qualities may occur through concurrent increases in fundamental athletic movement skill, namely the overhead squat and double lunge movements. These findings may assist with the identification and development of talent. 相似文献
10.
Corrado Lupo Carlo Minganti Cristina Cortis Fabrizio Perroni Laura Capranica Antonio Tessitore 《Journal of sports sciences》2013,31(9):889-897
Abstract This study aimed to compare specific technical and tactical indicators of the team and centre forward role of Euro League, and Italian Serie A1, Serie A2, and Serie B men's water polo club competitions. A notational analysis was performed on 21 water polo matches to evaluate the occurrence of technical and tactical team and centre forward indicators, highlighting differences among championships according to chi-square analyses. Differences emerged for Counterattack (P < 0.001) and Power-Play (P < 0.001) possessions, Even (P < 0.001; Euro League: 3 ± 1, Serie A1: 3 ± 2, Serie A2: 3 ± 2, Serie B: 6 ± 4) and Power-Play (P = 0.001) goals, and exclusions and penalties (P = 0.008) of the team during Even possessions. Relatively to the role analyses, effects emerged for perimeter players playing events (P = 0.049), as well as for centre forwards' goals (P = 0.007) and exclusions and penalties (P < 0.001; Euro League: 8 ± 1, Serie A1: 6 ± 2, Serie A2: 6 ± 2, Serie B: 3 ± 2) occurring at the end of Even possessions. Therefore, in Euro League, and Italian Serie A1 and Serie A2, teams perform a high occurrence of Power-Play possessions following up an exclusion, especially achieved by the centre forward during Even possessions, while, in Italian Serie B, goals were mostly scored during Even possessions, with a relevant contribution from the centre forward role. 相似文献
11.
针对足球运动项目的特点,通过运用因子分析法提取原参数指标的共性因子,建立影响球队成绩的共性因子得分标准化变量线性组合式。根据因子得分排名,对其差异性进行分析,探索各球队本赛季的成绩能否代表其真实实力,为球队实力排名建立新的评价体系,对球队赛前科学有效的训练控制,提高球队比赛成绩提供科学的理论依据。 相似文献
12.
This paper presents the findings of statistical analysis of the top career performances by men in a range of well-known sports.
The analytical techniques applied are commonly used in engineering hydrology for the analysis of extreme rainfalls, floods
and droughts. Initially, the raw data sets were assumed to be normally distributed but because the data sets were often highly
skewed, the results from logarithmically transformed data sets were preferred in most instances. For each activity analyzed
in each sport studied the main results were the Z-score and performance ratio of the rank 1 performer. These parameters are
both dimensionless, and hence it was possible to use these parameters to directly compare the rank 1 performers in each of
the sports studied. While for most data sets the very top performances were of similar standing from a statistical viewpoint
there were several notable exceptions, which appeared to be classical statistical outliers. These suspected outliers were
the performances of Don Bradman, an Australian cricketer; Jack Nicklaus, an American golfer; David Campese, an Australian
rugby union player; and Wayne Gretzky, a Canadian and American ice hockey player. Longevity, as a top sportsman, was an important
factor in the great performances of Nicklaus and Campese and, to a lesser degree, Gretzky. However, longevity was not an important
factor in Bradman's career. Hence it was concluded that Bradman's performances were more extraordinary than any other sportsman
and that it can be strongly argued that he, was the greatest ever sportsman. 相似文献
13.
Cyril Genevois Machar Reid Thomas Creveaux 《Sports biomechanics / International Society of Biomechanics in Sports》2020,19(2):212-226
AbstractThe topspin tennis forehand drive has become a feature of modern game; yet, as compared to the serve, there has been little research analysing its kinematics. This is surprising given that there is considerably more variation in the execution of the topspin forehand. Our study is the first to examine the amplitude of upper limb joint rotations that produce topspin in the forehand drives of 14 male competitive tennis players using video-based motion analysis. Humerothoracic abduction (-)/adduction (+), extension (-) /flexion (+), and external (-)/internal (+) rotation, elbow extension (-) /flexion (+) and forearm supination (-)/pronation (+), wrist extension (-)/flexion (+) and ulnar (-)/radial (-) deviation were computed. Our findings revealed that the generation of topspin demanded more humeral extension and forearm pronation but less humeral internal rotation angular displacement during the forwardswing. The follow-through phase of the topspin shot was characterised by greater humeral internal rotation and forearm pronation, and reduced humeral horizontal adduction when compared to the flat shot. This study provides practitioners with a better understanding of the upper limb kinematics associated with the topspin tennis forehand drive production to help guide skill acquisition interventions and physical training. 相似文献
14.
孙晶晶 《体育科技文献通报》2014,(5):55-55,84
高校阳光体育的开展,从丰富校园文化生活、完善学生体育技能与培养学生体育能力和终身体育意识的维度,对阻滞与大学生体质下滑起到了较好的作用。根据高校阳光体育实施的实践,在适合性和学习非冲突性原则的指导下,其开展的最佳时段主要为两类:日常时段,如工作日的午饭前与每日早晨的时段,与周末的全天性时段,有效地弥补了高校体育课堂对大学生体育训练的不足。 相似文献
15.
赵志丽 《体育成人教育学刊》2014,(5):48-49
竞争情报系统（CIS）是21世纪企业最重要的竞争工具之一,在对CIS的概念及相关研究进行分析的基础上,进一步论述CIS的功能在竞技体育领域的应用。竞技情报系统的环境监视、市场预警、技术跟踪、对手分析、战术制定、信息安全6大功能非常适用于当前激烈竞争的竞技体育,它是对竞技参赛过程中参赛准备、竞技信息募集与处理、运动员赛前状态诊断、参赛风险预测的概括与总结。 相似文献
16.
王庆丰 《体育科技文献通报》2011,19(4):15-17
素质教育是以面向全体学生、全面提高学生的基本素质、促进学生身心发展、开发智力潜能、形成学生健康个性为根本目的的教育活动。体育教育作为基础教育的重要组成部分,有它独特的优势,它不仅是素质教育的重要内容,而且与德育、智育、美育密切联系。在体育教学中加强素质教育,可以促进学生养成良好道德品质,发展其自主性,开发其智力,对学生适应未来快速多变的社会发展具有积极作用。 相似文献
17.
浅谈拳击运动员的战术打法 总被引：6，自引：0，他引：6
在拳击比赛中，场上情况千变万化，因此要求拳击运动员应针对不同的对手而制定相应的战术打法，力求破坏对手的技术动作、特长和绝招，发挥自己的长处。 相似文献
18.
根据2004年散打竞赛规则的主要内容变化情况,在分析新规则下散打技术运用状况的基础上,对技术的运用特点作进一步研究、总结,进而结合技术运用的内在规律,对技术运用的走向进行分析预测。以期能为各运动队、俱乐部进行更为针对性的科学合理的训练和武术主管部门的领导者制定更为完善的规则提供依据和参考。 相似文献
19.
本对2000年奥运会男排比赛、2002年世界男排锦标赛的发球技术的统计资料进行对比分析，找出世界强队在发球技术环节体现出来的统计学特征，为各级运动队的训练和比赛提供参考。 相似文献