Effects of season period,team quality,and playing time on basketball players' game-related statistics

Abstract

The aim of this study was to identify within-season differences in basketball players' game-related statistics according to team quality and playing time. The sample comprised 5309 records from 198 players in the Spanish professional basketball league (2007–2008). Factor analysis with principal components was applied to the game-related statistics gathered from the official box-scores, which limited the analysis to five factors (free-throws, 2-point field-goals, 3-point field-goals, passes, and errors) and two variables (defensive and offensive rebounds). A two-step cluster analysis classified the teams as stronger (69±8 winning percentage), intermediate (43±5 winning percentage), and weaker teams (32±5 winning percentage); individual players were classified based on playing time as important players (28±4 min) or less important players (16±4 min). Seasonal variation was analysed monthly in eight periods. A mixed linear model was applied to identify the effects of team quality and playing time within the months of the season on the previously identified factors and game-related statistics. No significant effect of season period was observed. A team quality effect was identified, with stronger teams being superior in terms of 2-point field-goals and passes. The weaker teams were the worst at defensive rebounding (stronger teams: 0.17±0.05; intermediate teams: 0.17±0.06; weaker teams: 0.15±0.03; P=0.001). While playing time was significant in almost all variables, errors were the most important factor when contrasting important and less important players, with fewer errors being made by important players. The trends identified can help coaches and players to create performance profiles according to team quality and playing time. However, these performance profiles appear to be independent of season period.     

Vital statistics and early death predictors of North American professional basketball players: A historical examination

While empirical evidence suggests that elite athletes have superior lifespan outcomes relative to the general population, less is known regarding their causes of death. The purpose of this study was to critically examine the mortality outcomes of deceased National Basketball Association and American Basketball Association players. Death data were collected from publicly available sources until 11 December 2015, and causes of death were categorized using the International Classification of Diseases, Tenth Revision (ICD). Mortality was measured through: i) cause-specific crude death rates (CDR), ii) estimates of death rates per athlete-year (AY), and iii) binary and multinomial regression analyses. We identified 514 causes of death from 787 deceased players (M = 68.1 y ± 16.0) from 16 different ICD groups, 432 of which were from natural causes. Findings showed similar leading causes of death and CDRs to sex- and race-matched controls, higher death rate differences per AY within time-dependent variables (i.e., birth decade, race, and height), and a higher likelihood of dying below the median age of death for black and taller players, although this was highly confounded by birth decade. More complete knowledge of mortality outcomes would provide broad public health applications and disarm harmful stereotypes of elite athlete health.     

Effects of game location and final outcome on game-related statistics in each zone of the pitch in professional football

Abstract

The aim of this large-scale study of elite professional football teams was to identify the independent and interactive effects of game location and final outcome on football game-related statistics according to the zone of the pitch in which they occurred. The sample consisted of 1900 games played over five seasons (from 2003–2004 to 2007–2008) of the Spanish Professional Football League. Factor analysis with principal components was applied to the game-related statistics recorded from the games, which limited the analysis to four factors (Factor 1: Turnovers in zone 5.2 and Crosses in zone 4; Factor 2: Goals and shots in zone 5.1, Turnovers in zone 4, and Ball recover in zone 2; Factor 3: Goals and shots in zone 5.2; and Factor 4: Turnovers in zone 5.1). Zone 2 was between the defensive semi-circle area and midfield circle, Zone 4 was between the midfield circle and offensive semi-circle area, Zone 5.1 was the offensive goal area, and Zone 5.2 was the offensive small area). A mixed linear model was applied to identify the effects of game location and final outcome on the previously identified factors. Game location and final outcome main effects were identified for all factors, with home and winning teams having better values. The interaction Location×Outcome was only significant for Factor 4 (Turnovers in zone 5.1). When playing at home, teams had higher frequencies for all analysed variables, probably resulting from home advantage factors such as facility familiarity and/or crowd. Additionally, winning teams’ exhibited different and consistent profiles from drawing and losing teams, mainly discriminated by their ability to recover the ball in Zone 2 and to organize the offence using penetrative passes to Zones 5.2 and 5.1 to increase the number of shots and consequently goals. The trends identified may provide important information for modelling high-level performances.     

我国职业篮球俱乐部现状与发展走向研究

从基本概念出发,调查分析我国职业篮球俱乐部的现状和发展走向.认为我国职业篮球俱乐部面临的主要问题是产权不清、责权不明,经营管理体制不完善,市场开发不足,内部管理制度不健全;体育局与企业合资型俱乐部是篮球职业化的阶段性产物,企业独资型俱乐部将成为我国职业篮球俱乐部的发展走向.     

我国职业篮球竞赛市场的特征与功能

我国职业篮球竞赛市场特征在竞赛产品的性质、投资主体的角色、组织管理方式、收益方式等方面不同于我国传统篮球竞赛市场;在职业篮球竞赛市场的孕育过程、竞赛组织的核心目标、组织结构与控制权的配置、治理机制与管理规程、市场主体———职业篮球俱乐部制度等方面,与西方市场经济发达国家职业篮球竞赛(NBA)市场相比具有较大差异。     

福建本科院校体育教育专业篮球普修课教学现状的研究

运用文献资料、逻辑分析、数理统计等方法,对福建本科院校体育教育专业学生,篮球普修课教师进行问卷调查,对篮球普修课程设置、课程目标、课程内容及考核评价等方面进行全面的调查和研究,探究福建本科院校体育教育专业篮球普修课教学的现状,针对普修课教学中存在的问题,提出改进建议。     

篮球职业联赛赛制、 市场、 文化的基本关系

运用文献资料法、逻辑推理法等研究方法,对篮球职业联赛的赛制、市场、文化之间的基本关系进行了剖析与解读.旨在为研究我国篮球职业联赛提供新的视角和认识平台,对推动我国篮球职业联赛的发展提供理论参考.     

2019年女篮亚洲杯参赛球队位置效率值统计与分析

运用文献资料、数理统计等方法,以亚洲杯女篮8支队伍为研究对象,将亚洲女篮后卫、前锋、中锋的技术统计和位置效率值与中国队比较,结果得出:1)中国女篮身高和年龄优势明显,但多项技术运用能力和效率值与日本、澳大利亚等队相比存在差距;2)中国队3个位置的效率值分别为后卫21.22,前锋27.89,均列第2位,中锋26.67,列第1位。结论:中国女篮的优势是身材高、年龄小,前锋位置效率值较高;劣势是后卫效率值低,球队竞技状态不稳定。建议:强化训练各位置的核心技术,有针对性地与欧美强队对抗,丰富大赛经验。     

中国男子篮球职业联赛的现状与发展对策

对我国男子篮球职业联赛(CBA)的现状研究发现，目前CBA主要存在产权、管理体制、运行机制、人才培养、赛制等亟待解决的问题。提出了弱化篮管中心的管制职能，建立CBA联盟体制，健全CBA专门的职业体育法规，加强对职业经营人才的培养等发展对策。     

我国高校篮球运动发展存在的问题分析

CUBA和大超联赛两大篮球赛事，对我国篮球运动在高校的普及和提高起到了积极作用．但存在赛制不切合实际、发展目标定位不准、生源质量得不到保证、多头管理协调性差等问题，认为高校篮球运动应当普及与提高相结合，夯实基础，逐步建立起小学——中学——大学一条龙的训练体制，改革竞赛制度，规范招生与管理，提高联赛质量，建立起与我国国情相适应的大学生篮球联赛体制。     

我国职业足球运动员参赛目标动机的分类及相互作用

研究我国职业足球运动员的参赛目标动机有利于诊断我国职业足球队管理中存在的一些问题.通过调查发现,我国职业足球队员的参赛目标动机主要包括:任务目标、获奖目标、竞争目标、压力目标、成就目标、提高目标、获胜目标等.在运动员的目标动机中,获奖、竞争、成功、争胜的动机水平相对较高,是主导的动机;而压力、完成任务、提高学习的动机水平相对较低,处于依附地位.     

沈阳市6所大学篮球运动员运动损伤调查与分析

采用问卷调查、文献资料、访谈、数理统计等研究方法,对沈阳市6所大学篮球运动员运动损伤产生原因进行调查分析。并针对沈阳市篮球运动员易损伤部位,提出预防运动损伤的可行性建议。     

我国职业篮球俱乐部的产权现状及对策

对我国职业篮球俱乐部的产权状况进行了分析,研究表明,我国职业篮球俱乐部中,实现真正意义的股份制俱乐部较少,这与职业体育俱乐部的发展趋势不相符合。根据职业体育俱乐部的发展趋势和运行规律,提出了加快我国篮球俱乐部实行股份制的对策与建议。     

山东高校体育院系篮球专任教师基本现状量化分析

运用文献资料、问卷调查、数理统计、逻辑分析等研究方法,对山东省高校体育院系篮球专任教师队伍数量、年龄、教龄结构、学历、职称、学缘结构、专项技能、知识结构、双肩挑、社会职务、裁判等级、健康状况的趋势变化进行科学的描述和分析,指出其存在问题,并提出发展建议,为高校体育院系改革和发展提供信息反馈,促进篮球师资结构发展以及体育高等教育的整体发展。     

Comparison of skill between China and Jordan in 26th Aslan Championship menS basketball

本文运用录像观察法、文献资料法,对比分析发现第26届男篮亚锦赛中国男篮在盖帽、制造犯规、防守篮板这三个方面高于约旦队,在助攻、抢断、失误和体能与对抗等方面与约旦男篮存在明显差距。中国男篮应加强基本技术训练,减少失误,提高战术训练强度和组织助攻能力,提高投篮命中率,并增强篮板拼抢能力及身体对抗能力。     

第25届亚洲男篮锦标赛中国男篮攻防能力分析

对第25届亚洲男篮锦标赛中国男篮与对手所有比赛进行技术统计,对中国男篮与对手的攻防能力进行比较分析。结果表明：中国男篮在得分、后场篮板和封盖上占有较大优势,但前场篮板能力有待提高。与前4名中的其他3支球队相比,中国队出手次数明显低于对手,其他指标没有明显差异。     

美英两国职业体育经济分析

对影响美国和英国职业体育的因素进行了比较分析。结果显示电视转播、门票收入和观众人数、赞助与广告收入是影响职业体育发展的一般因素，比赛结果的不确定性和竞争平衡是限制职业体育经济发展的深层次因素。     

《体育》1998～2002年转载文章的统计与分析

以中国人民大学《复印报刊资料·G8体育》为研究对象,采用定量、定性相结合的研究方法,对该刊1998～2002年间转载文章的情报源、载文单位、作者及主题分布进行了统计分析,从中揭示出5年来我国体育科学研究的现状及发展趋势。     

试析运动技术分析中统计学的应用误区

结合运动技术分析的特点与实例，分析了统计学应用的误区，包括：①没有预先确定显著性水平；②样本含量的确定缺乏科学依据；③没有判断总体的概率分布情况；④没有正确理解显著性差异的概念；⑤没有正确区分单、双侧检验；⑥缺乏与有关学科的结合分析。     

对2005年辽宁省青少年散打比赛腿法技术使用情况的统计分析

通过观看2005年辽宁省青少年散打比赛的录像，对比赛中运动员运用的主要腿法技术作以统计分析，结果表明：本次比赛中运用次数最多的腿法是鞭腿；使用成功率最高的腿法是侧踹腿；相对于鞭腿和侧踹腿技术，蹬腿技术较弱。