Locomotor and collision characteristics by phases of play during the 2017 rugby league World Cup

IF 2.8 2区 医学 Q1 SPORT SCIENCES Science and Medicine in Football Pub Date : 2020-07-02 DOI:10.1080/24733938.2019.1694167
Gordon Rennie, N. Dalton-Barron, S. McLaren, D. Weaving, Richard Hunwicks, C. Barnes, S. Emmonds, Barry G. Frost, B. Jones
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引用次数: 11

Abstract

ABSTRACT Purpose Understanding differences in locomotor and collision characteristics between phases of play can help rugby league coaches develop training prescription. There are no data currently available describing these differences at the elite international level. The aim of our study was to determine the differences in average speed (m∙min−1), high-speed running (>5.5 m∙s−1) per minute and collision frequencies per minute (n∙min−1) between attack and defence during the 2017 Rugby League World Cup (RLWC). Methods: Microtechnology data were collected from 24 male professional rugby league players from the same international squad across six matches of the RLWC. Data were then subject to exclusion criteria and stratified into forwards (n = 9) and backs (n = 7) before being analysed with linear mixed-effects models. Results: When comparing attack with defence, forwards and backs had substantially slower average speeds (effect size [ES]; ±90% confidence limits: −2.31; ±0.31 and −1.17; ±0.25) and substantially greater high-speed distance per minute (1.61; ±0.59 and 4.41; ±1.19). Forwards completed substantially more collisions per minute when defending (2.75; ±0.32) whilst backs completed substantially more when attacking (0.63; ±0.70). There was greater within- and between-player variability for collision frequency (coefficient of variation [CV] range; 25–28%) and high-speed distance (18–33%) per minute when compared to average speed (6–12%). Conclusions: There are distinct differences in locomotor and collision characteristics when attacking and defending during international rugby league match-play, yet the variability of high-speed running and collisions per minute is large. These data may be useful to plan or evaluate training practices.
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2017年橄榄球世界杯比赛阶段的运动和碰撞特征
摘要目的了解不同比赛阶段运动和碰撞特征的差异,有助于橄榄球联盟教练制定训练处方。目前还没有数据可以描述国际精英阶层的这些差异。我们研究的目的是确定2017年橄榄球联盟世界杯(RLWC)期间进攻和防守之间的平均速度(m∙min−1)、每分钟高速跑(>5.5 m∙s−1)和每分钟碰撞频率(n∙min−1)的差异。方法:收集来自同一国家队的24名男性职业橄榄球联盟球员在RLWC的6场比赛中的微技术数据。然后对数据进行排除标准,分层为正向(n = 9)和反向(n = 7),然后用线性混合效应模型进行分析。结果:当比较进攻和防守时,前锋和后卫的平均速度明显较慢(效应大小[ES];±90%置信限:−2.31;±0.31和−1.17;±0.25)和更大的每分钟高速距离(1.61;±0.59和4.41;±1.19)。前锋在防守时每分钟的碰撞次数要多得多(2.75;±0.32),而后腰在进攻时完成的任务要多得多(0.63;±0.70)。碰撞频率在玩家内部和玩家之间存在较大的可变性(变异系数[CV]范围;与平均速度(6-12%)相比,每分钟高速距离(18-33%)。结论:在国际橄榄球联盟比赛中,进攻和防守时的运动和碰撞特征存在明显差异,但高速奔跑和每分钟碰撞的变异性较大。这些数据可能对计划或评估培训实践有用。
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来源期刊
CiteScore
6.70
自引率
11.80%
发文量
69
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