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首页> 外文期刊>European journal of sport science: EJSS : official journal of the European College of Sport Science >Analysis of direct free kicks in the women's football World Cup 2007
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Analysis of direct free kicks in the women's football World Cup 2007

机译：2007年女足世界杯直接任意球分析

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摘要

The location and outcome of all free kicks taken directly at goal in the 2007 women's football World Cup were assessed to identify areas with the most goal-scoring potential and assist with tactical decisions and training design. Video of all free kicks taken directly at goal in the 32 games was captured and the location of the ball on the pitch was calculated from pitch markings and image pixel coordinates using a customized curve-fitting method. The outcome of each free kick was determined and for those that resulted in a goal or were saved, information on ball flight time and the placement of the ball relative to the goal was reported. All seven free kicks that resulted in a goal were taken from a central area within 7 m of the penalty circle, placed at the edge of the goal within approximately 1 m of the goalpost, and had an average flight time of 1.09 s, which was significantly faster than for those that were saved. All free kicks directed towards the bottom and centre of the goal resulted in straightforward saves for the goalkeeper. It is recommended that teams should consider a direct shot from free kicks awarded within 7 m of the penalty circle. For free kicks from wide areas and areas further from the goal, players should be aware of their individual ability and only take a shot when they perceive the probability of scoring a goal to be high. Otherwise, alternative attacking strategies should be considered to avoid an easy turnover of possession.
机译：对2007年女足世界杯上直接射门得分的所有任意球的位置和结果进行了评估，以找出具有最大进球潜力的区域，并协助战术决策和训练设计。捕获了32场比赛中直接射门得分的所有任意球的视频，并使用定制的曲线拟合方法根据球场标记和图像像素坐标计算了球场上球的位置。确定每个任意球的结果，对于那些导致进球或被保存的任意球，报告有关球飞行时间和球相对于球门位置的信息。导致进球的所有七个任意球都取自罚球区7 m之内的中心区域，放置在距球门柱约1 m之内的球门边缘，平均飞行时间为1.09 s，即比保存的速度快得多。所有直接射向球门底部和中央的任意球，为门将节省了很多钱。建议各队考虑在罚球区7 m之内判罚任意球直接射门。对于来自大范围区域和距球门较远区域的任意球，球员应该意识到自己的能力，只有在意识到进球得分的机率很高时才投篮。否则，应考虑采用其他进攻策略，以免轻易转移拥有权。

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