Woods Carl T, Joyce Christopher, Robertson Sam
School of Exercise and Health Sciences, Edith Cowan University, Australia.
School of Health Sciences, Notre Dame University, Australia.
J Sci Med Sport. 2016 May;19(5):419-23. doi: 10.1016/j.jsams.2015.04.013. Epub 2015 Apr 30.
To compare the physical and technical skill match activity profiles of drafted and non-drafted under 18 Australian football players.
Cross-sectional observational.
In-game physical and skill variables were assessed for under 18 Australian football players participating within the 2013 and 2014 National under 18 Australian Football League Championships. Players originated from one State Academy (n=55). Ten games were analysed; resulting in 183 observations. Players were sub-divided into two groups; drafted/non-drafted. Microtechnology and a commercial statistical provider allowed the quantification of total distance (m), relative distance (mmin(-1)), high speed running distance (>15kmh(-1)), high speed running expressed as a percentage of total distance (% total), total disposals, marks, contested possessions, uncontested possessions, inside 50s and rebound 50s (n=10). The effect size (d) of draft outcome on these criterion variables was calculated, with generalised estimating equations (GEE's) used to model which of these criterion variables was associated with draft outcome.
Contested possessions and inside 50s reflected large effect size differences between groups (d=1.01, d=0.92, respectively). The GEE models revealed contested possessions as the strongest predictor of draft outcome, with inside 50s being the second. Comparatively, the remaining criterion variables were not predictive of draft outcome.
Contested possessions and inside 50s are the most influential in-game variables associated with draft outcome for West Australian players competing within the National under 18 Australian Football League Championships. Technically skilled players who win contested possessions and deliver the ball inside 50 may be advantageously positioned for draft success.
比较入选和未入选的18岁以下澳大利亚足球运动员的身体和技术技能匹配活动概况。
横断面观察研究。
对参加2013年和2014年全国18岁以下澳大利亚足球联赛锦标赛的18岁以下澳大利亚足球运动员的比赛中的身体和技能变量进行评估。球员来自一个州立学院(n = 55)。分析了10场比赛;共得到183个观察结果。球员被分为两组;入选/未入选。使用微技术和一家商业统计提供商来量化总距离(米)、相对距离(米/分钟)、高速奔跑距离(>15公里/小时)、高速奔跑距离占总距离的百分比(%总距离)、总传球次数、接球次数、争夺球权、无争夺球权、进入50米区域和回传50米区域(n = 10)。计算选秀结果对这些标准变量的效应大小(d),并使用广义估计方程(GEE)来建模这些标准变量中哪些与选秀结果相关。
争夺球权和进入50米区域反映出两组之间存在较大的效应大小差异(分别为d = 1.01,d = 0.92)。GEE模型显示争夺球权是选秀结果的最强预测因素,进入50米区域是第二强预测因素。相比之下,其余标准变量不能预测选秀结果。
对于参加全国18岁以下澳大利亚足球联赛锦标赛的西澳大利亚球员来说,争夺球权和进入50米区域是与选秀结果相关的最有影响力的比赛变量。在争夺球权中获胜并将球传入50米区域内的技术娴熟球员可能在选秀中更具优势。