| 基于逐步回归分析的CBA不同水平球队防守能力比较分析 |
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| 引用本文： | 张致玮,贾谊.基于逐步回归分析的CBA不同水平球队防守能力比较分析[J].辽宁体育科技,2021(2). |
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| 作者姓名： | 张致玮 贾谊 |
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| 作者单位： | 中北大学体育学院 |
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| 摘 要： | 收集2018~2019赛季CBA联赛常规赛的相关技术数据,按照所选择的10项防守指标(自变量)对防守效率(因变量)贡献程度的大小进行逐步回归分析。结果显示:按照对CBA球队防守效率(因变量)贡献的大小,本研究所引入的防守技术指标(自变量)依次为:抢断、防守篮板、场均篮板、盖帽、限制对手三分命中率、限制对手罚球命中率。按照球队的战绩分为前十名高水平球队与后十名较低水平球队,通过Mann Whitney U检验对比这6项防守技术指标,其中场均篮板、盖帽、限制对手罚球命中率三项指标不同水平球队间无显著性差异(P>0.05);抢断、场均防守篮板、限制对手三分球命中率三项指标高水平球队明显强于较低水平球队,且二者之间呈显著性差异(P<0.05)。
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| 关 键 词： | 篮球防守 逐步回归分析 防守能力 |
Comparative analysis on the defense ability of teams at different level in CBA based on stepwise regression analysis |
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| ZHANG Zhiwei,JIA Yi.Comparative analysis on the defense ability of teams at different level in CBA based on stepwise regression analysis[J].Liaoning Sport Science and Technology,2021(2). |
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| Authors: | ZHANG Zhiwei JIA Yi |
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| Institution: | (Physical Education School of North University of China,Taiyuan 030051,Shanxi,China) |
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| Abstract: | This paper divides the CBA league teams in 20182019 into the top ten high-level teams and the bottom ten low-level teams according to their achievements,and collects their statistics of the relevant technical data in the games,the contribution degree of the selected 10 defense indexes(independent variables)to the defense efficiency(dependent variables)is analyzed by stepwise regression.The results show that according to the contribution to the CBA team’s defense efficiency(dependent variable),the defense technical indicators(independent variable)introduced in this study are:snatch,defensive rebounds,field average rebounds,blocking,limiting the opponent’s three-point hit rate,limiting the opponent’s free throw hit rate.Top 10 high level teams and bottom 10 low level teams pass Mann Whitney The U-test showed that there was no significant difference among the six defense technical indexes,among which the three indexes of rebounding per field,blocking and limiting opponent’s free throw hit rate at different levels(P>0.05);the three indexes of high-level teams were significantly stronger than those of low-level teams,and there was a significant difference between them(P<0.05). |
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| Keywords: | basketball defense stepwise regression analysis defensive abitity |
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