Analysis of direct free kicks in the women's football World Cup 2007
Analysis of direct free kicks in the women's football World Cup 2007
复制标题
DOI：
10.1080/17461390903515188
复制
发表时间：
2010-01-01
影响因子：
3.2
通讯作者：
Alcock, Alison
中科院分区：
文献类型：
--
作者：
Alcock, Alison
对2007年女足世界杯中所有直接罚入球门的任意球的位置和结果进行了评估，以确定最有进球潜力的区域，并为战术决策和训练设计提供帮助。采集32场比赛中所有直接扑向球门的任意球视频，利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出球在球场上的位置。每次任意球的结果都会被确定，对于那些导致进球或被扑出的任意球，会报告有关球的飞行时间和相对于球门的位置的信息。所有导致进球的7个任意球都是在距离罚球圈7米以内的中心区，被放置在距离门柱约1米的球门边缘，平均飞行时间为1.09秒，比那些被扑出的球要快得多。所有指向球门底部和中间的任意球都被守门员直接扑出。建议各队考虑在罚球区7米范围内任意球直接射门。对于来自边路区域和距离球门较远区域的任意球，球员应该意识到自己的个人能力，只有在他们认为进球可能性很高的时候才射门。否则，应该考虑其他的进攻策略，以避免容易的控球失误。
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.