共查询到19条相似文献，搜索用时 203 毫秒
1.
2.
本文运用文献资料法、数据统计法和逻辑分析法对NBA07—08赛季常规赛各队主力中锋的得分能力进行分析研究。从球员的得分效率和投篮频率两方面来分析球员的得分能力,并根据数据统计结果把球员分为角色球员、弱核心球员和强核心球员三大类。通过分析发现,球队的传统与比赛风格对中锋得分能力、作用地位有一定得影响。 相似文献
3.
高校女子篮球运动员人格与技术特点相关研究 总被引：1，自引：0，他引：1
运用艾森克人格问卷简式量表（EPQ—RSC）,对第十二届CUBA中国大学生篮球联赛女子八强队伍进行测查。结果表明：1）得分、三分球命中率、二分球命中率、失误与运动员艾森克N维度呈现显著性相关,罚球命中率、助攻与艾森克E维度呈现显著性相关,助攻、失误与艾森克P维度呈现显著性相关;2）粘液质、多血质球员在得分方面高于抑郁质与胆汁质,多血质与胆汁质球员三分球命中率、二分球命中率方面高于另外两种类型球员。结论：N维度低分运动员情绪较为稳定,是球队的核心人选,得分手以及二分球选手也都属于情绪稳定性;粘液质、多血质球员是球队的主要得分手,多血质与胆汁质球员是三分射手的优秀人选。 相似文献
4.
本文运用文献资料法、数理统计法等方法对2022年男篮欧锦赛四强球队攻防数据指标进行综合量化对比分析。结果显示：(1)本届男篮欧锦赛四强球队球员基本情况水平相当。(2)西班牙队与德国队综合进攻实力相当,法国队外线投射和失误控制能力不足,波兰队外线投射能力和罚球命中率有待提高。(3)本届男篮欧锦赛四强球队整体防守能力相当。(4)高阶数据(球员正负值)方面,波兰队球员的个人综合攻防实力显著低于其余三支球队的球员。 相似文献
5.
<正>随着现代篮球运动的不断发展,内线的争夺越显得更加激烈。"离篮筐越近,投篮命中率越高""得中锋者得天下"早已成为篮球界的共识,符合现代篮球运动的发展规律。所以,对中锋队员的要求也越来越高,它是一个球队的核心,是灵魂,也是一支球队竞技实力的重要标志之一。对于现代篮球中锋技术进行系统地归纳和总结,提出培养中锋球员的对策就显得十分必要。 相似文献
6.
运用文献资料等研究方法对美国男子篮球职业联赛的超级明星球员在篮球比赛中的表现对比赛结果的影响进行研究。主要结论:核心球员的表现对比赛的胜负具有很大的影响;篮球比赛中核心球员的得分和助攻对比赛的结果影响较大;对核心球员进行有针对性的防守会直接改变比赛的结果;在比赛的关键时刻核心球员迷失往往会导致球队的失利。 相似文献
7.
8.
现代排球比赛竞争激烈,各诸强实力相当,而核心球员往往在比赛焦灼时打破场上僵局,改变比赛局势。通过观看世界排球比赛和查阅相关资料,从核心球员的作用、竞技能力结构的双子模型、唯物辨证法的矛盾观三个方面阐述了培养排球进攻型核心球员的必要性。 相似文献
9.
MM组合究竟是人气组合还是实力组合?这个问题存在于球迷心中,也存在于球队心中。答案只有一个,握在十几名球员以及主教练范甘迪手中。从阵容来看,主要的变动为送走弗朗西斯、莫布里、卡托、皮亚考斯基、格里芬等球员,而交易获得的球员包括麦蒂、霍华德、卢、穆托姆博,新签的球员包括苏拉、沃德。火箭队打乱整体球员框架重建的痕迹十分明显,一方面显示出球队急切扶植姚明为首的未来基层核心,另外一方面改变战术打法同样是昭然若揭的司马昭之心。 相似文献
10.
采用逐步回归分析法、秩相关分析法和聚类分析法对26届亚洲男子篮球锦标赛各球队的技战术指标进行统计与分析,研究影响本届比赛各球队得分能力的主要因素。研究结果:(1)建立影响第26届亚洲男子篮球锦标赛各球队得分能力的回归方程;(2)影响第26届亚洲男子篮球锦标赛各球队得分能力的主要因素是被侵、失误、助攻和进攻篮板4项技战术指标;(3)第26届亚洲男子篮球锦标赛各球队得分能力的回归方程得分值排序情况与名次排序具有一定程度的相关关系,回归方程能较好地反映出第26届亚洲男子篮球锦标赛各球队的得分能力情况;(4)聚类结果与第26届亚洲男子篮球锦标赛各球队的最后排名基本一致。研究结论:该研究有效性较高,各球队可以根据得分能力回归分析和各球队技战术指标聚类分析的结果进行针对性的训练,提高队员冲抢进攻篮板的能力、减少球队失误、提高球员合理技术的能力,加强队员进攻、突破能力,提高球队的得分,最终提高球队成绩,为各球队训练计划的制定提供参考。 相似文献
11.
AbstractThe aim was to assess the technical variability of a new wrist-worn accelerometer under controlled conditions with a shaker device and during normal daily physical activities (PAs). In the first experiment, 10 wrist-worn accelerometers (Vivago® Wellness, Paris, France) were attached to the shaker device. Variability was tested at five shaking frequencies (1.1, 2.1, 3.1, 4.1, and 10 Hz) for 10 min at each frequency. In the second experiment, 21 participants wore wrist-worn accelerometers and performed six consecutive 10-min periods of activity at increasing levels of intensity from sedentary to vigorous. Results from the first experiment show a modest inter- and intra-instrument reliability at low frequencies and that reliability improved as frequency increased. The inter-instrument coefficient of variation (CV) was 2.6–18.3%. The intra-instrument CV was 4.1–23.2%. Variability was similar in the second experiment with a CV inversely related to PA intensity. The inter- and intra-instrument CV varied from 24.2% and 19.9% for sedentary activities to 3.7% and 4.3% for vigorous PA, respectively. Results suggest that reliability was higher at high intensities, corresponding to moderate and vigorous PA, intensities generally recommended for public health purposes. 相似文献
12.
采用《自测健康评定量表》及《身体锻炼等级量表》对426名在读研究生进行调查,结果显示:在读研究生自测心理健康和社会健康得分明显低于生理健康得分,健康状况存在专业差异;休闲生活方式以静态的、室内的、被动接受型的休闲活动为主;标准体育人口比例较低,多选择技术含量低、活动量小、趣味性强的活动项目;没有兴趣、没有时间、没有组织管理等是影响其参与体育活动的主要原因;体育活动的次数、强度、时间与健康状况呈显著性正相关,标准体育人口的健康状况明显较好。 相似文献
13.
Samuel J. Callaghan Robert G. Lockie Warren A. Andrews Robert F. Chipchase Sophia Nimphius 《Sports biomechanics / International Society of Biomechanics in Sports》2020,19(3):307-321
AbstractThis study assessed the reliability and validity of segment measured accelerations in comparison to front foot contact (FFC) ground reaction force (GRF) during the delivery stride for cricket pace bowlers. Eleven recreational bowlers completed a 30-delivery bowling spell. Trunk- and tibia-mounted inertial measurement units (IMUs) were used to measure accelerations, converted to force, for comparisons to force plate GRF discrete measures. These measures included peak force, impulse and the continuous force–time curve in the vertical and braking (horizontal) planes. Reliability and validity was determined by intra-class correlation coefficients (ICC), coefficient of variation (CV), Bland–Altman plots, paired sample t-tests, Pearson’s correlation and one-dimensional (1D) statistical parametrical mapping (SPM). All ICC (0.90–0.98) and CV (4.23–7.41%) were acceptable, except for tibia-mounted IMU braking peak force (CV = 12.44%) and impulse (CV = 18.17%) and trunk vertical impulse (CV = 17.93%). Bland–Altman plots revealed wide limits of agreement between discrete IMU force signatures and force plate GRF. The 1D SPM outlined numerous significant (p < 0.01) differences between trunk- and tibia-located IMU-derived measures and force plate GRF traces in vertical and braking (horizontal) planes. The trunk- and tibia-mounted IMUs appeared to not represent the GRF experienced during pace bowling FFC when compared to a gold-standard force plate. 相似文献
14.
Concurrent validity and test-retest reliability of a global positioning system (GPS) and timing gates to assess sprint performance variables 总被引：1，自引：0，他引：1
There has been no previous investigation of the concurrent validity and reliability of the current 5 Hz global positioning system (GPS) to assess sprinting speed or the reliability of integrated GPS-accelerometer technology. In the present study, we wished to determine: (1) the concurrent validity and reliability of a GPS and timing gates to measure sprinting speed or distance, and (2) the reliability of proper accelerations recorded via GPS-accelerometer integration. Nineteen elite youth rugby league players performed two over-ground sprints and were simultaneously assessed using GPS and timing gates. The GPS measurements systematically underestimated both distance and timing gate speed. The GPS measurements were reliable for all variables of distance and speed (coefficient of variation [CV] = 1.62% to 2.3%), particularly peak speed (95% limits of agreement [LOA] = 0.00 ± 0.8 km · h(-1); CV = 0.78%). Timing gates were more reliable (CV = 1% to 1.54%) than equivalent GPS measurements. Accelerometer measurements were least reliable (CV = 4.69% to 5.16%), particularly for the frequency of proper accelerations (95% LOA = 1.00 ± 5.43; CV = 14.12%). Timing gates and GPS were found to reliably assess speed and distance, although the validity of the GPS remains questionable. The error found in accelerometer measurements indicates the limits of this device for detecting changes in performance. 相似文献
15.
Padraic J. Phibbs Ben Jones Gregory Roe Dale Read Joshua Darrall-Jones Jonathon Weakley 《European Journal of Sport Science》2018,18(3):341-348
The aims of this study were to determine the variability of weekly match and training loads in adolescent rugby union players across a competitive season, and to investigate the effect of match frequency on load distribution across different activities. Internal match and training load data (i.e. session-rating of perceived exertion (sRPE)) were collected daily from 20 players from a regional academy across a 14-week season. Data were analysed using a mixed-effects linear model, and variability was reported as a coefficient of variation (CV). Differences between 0-, 1-, 2-, and 3-match weeks were assessed using Cohen’s d effect sizes and magnitude-based inferences. Mean weekly total match and training sRPE load was 1425?±?545 arbitrary units (AU), with a between-player CV of 10?±?6% and within-player CV of 37?±?3%. Mean week-to-week change in total sRPE load was 497?±?423?AU (35%), and 40% of weekly observations were outside the suggested acute:chronic workload ratio ‘safe zone’. Total weekly sRPE loads increased substantially with match frequency (1210?±?571, 1511?±?489, and 1692?±?517?AU, for 0-, 1-, and 2-match weeks, respectively), except for 3-match weeks (1520?±?442?AU). Weekly match and training loads were highly variable for adolescent rugby players during the competitive season, and match frequency has a substantial effect on the distribution of loads. Therefore, match and training loads should be coordinated, monitored, and managed on an individual basis to protect players from negative training consequences, and to promote long-term athlete development. 相似文献
16.
周蔷 《沈阳体育学院学报》2012,31(2):115-117
以奥运会、世界锦标赛女子铁饼前8名运动员为研究对象。运用文献资料法、统计法归纳法和个案研究,对决赛过程中成功率、各轮次最优成绩的频数、有效成绩的稳定性(变异系数)等反映铁饼竞技表现的参数进行分析。主要结论:世界优秀女子铁饼运动员平均发挥率为98.05%,超水平发挥率为18.75%;2004～2011年间的奥运会、田径锦标赛中,女子铁饼夺冠成绩在65.50±1m左右波动,前8名的平均成绩在63.8±1.5m左右波动;决赛从第1轮到第6轮,成功率总体趋势是逐渐降低,后3轮成功率明显低于前3轮;在6轮次创造最优成绩的频数无显著性差异(P=0.535>0.05);女子铁饼项目总体稳定性不高,有效成绩平均变异系数为2.30%,不同的参赛环境对运动员虽有一定的影响,但运动员的主观发挥对稳定性的影响是主要的;李艳凤正处于最佳竞技年龄阶段,2011年夺冠是强大实力和稳定技术表现的结果,但伦敦要再创造辉煌,必须在现有实力的基础上,必须进一步提高临场发挥率,狠抓前3轮的高水平发挥。 相似文献
17.
浅析中长跑运动员的速度力量训练 总被引：1，自引：0，他引：1
中长跑是速度、耐力、力量、意志品质等的综合素质较量。随着人们对此项目的深入认识 ,得知发展速度力量素质训练是提高中长跑运动的跑速及运动成绩的基础 ,也是决定比赛成绩的关键因素 相似文献
18.
腰部竖脊肌疲劳运动过程中表面肌电信号线性和非线性指标的变化 总被引：1，自引：0，他引：1
通过等长背伸运动负荷诱发腰部竖脊肌疲劳并记录全程表面肌电（sEMG）信号,分别以快速傅立叶变换（FFT）计算平均功率频率MPF和非线性RQA方法计算确定性线段百分数（?T）。结果显示,MPF随着肌肉疲劳的发展而逐渐下降,而?T呈现反向变化趋势,提示肌肉疲劳时的sEMG信号规律性在增强。?T的变异系数CV比MPF的小,说明?T作为腰部肌肉功能状态的评价指标具有独特的优势。 相似文献
19.
我国多数男生引体向上得"零"分，使上肢力量测评出现"地板效应"。采用量化研究和质性研究两种范式提高研究效度。量化研究对学生体质与健康调研数据和监测数据进行方差分析、多重比较和回归分析，结果表明：（1）每5~10年，男生的握力、体重、身高、BMI、引体向上均值差异显著；（2）年龄、握力、体重、身高、BMI分别显著预测引体向上成绩，体重和握力是影响我国男生引体向上成绩的主要影响因素。质性研究结果表明，引体向上"零"分主要有四个方面的原因：体重增长难挡，力量增长受限，个体认知偏差，社会支持薄弱。结论：我国男生引体向上"零"分的首要原因是体重增长较快，其次，主要肌群绝对力量和耐力增长不足，男生对引体向上的认知有偏差，学校、家长、社会支持较弱；借助政策控制体重、发展肌力、完善测评标准、促进男生积极练习引体向上十分重要。 相似文献