Basque Country University, Physical Activity and Sport, Vitoria-Gasteiz, Spain.
Int J Sports Med. 2011 Jun;32(6):415-21. doi: 10.1055/s-0031-1271771. Epub 2011 May 17.
Using a multi-camera computerised tracking system the present study aimed to provide a detailed analysis of the work-rate profile of a team of elite soccer players during official matches of the Spanish Premier League. Observation-based performance measures were obtained from 434 individual samples. 6 physical parameters involving the distance covered by players were analysed: standing intensity (0-11 km·h (-1)), low-intensity running (11.1-14 km·h (-1)), moderate-intensity running (14.1-17 km·h (-1)), high-intensity running (17.1-21 km·h (-1)), very high-intensity running (21.1-24 km·h (-1)) and sprinting (>24 km·h (-1)). These intensity thresholds were considered with respect to 4 contextual variables: MATCH STATUS, MATCH LOCATION, OPPONENT LEVEL and MATCH HALF, which were analysed in relation to the EFFECTIVE PLAYING TIME. A descriptive analysis and a multivariate mixed model were employed for the analysis of change processes in soccer. The distance total covered (m) by players at different work intensities during the EFFECTIVE PLAYING TIME was greater when playing at HOME (3 931 vs. 3 887 AWAY), when the reference team was LOSING (3 975 vs. 3 837 DRAWING and 3 921 WINNING) and when the level of the opposing team was HIGHER (4 032 vs. 3 938 MEDIUM and 3 736 BOTTOM). By contrast, their physical performance decreased during the 2NDHALF of matches (3 822 vs. 3 985 1ST HALF).
本研究使用多摄像机计算机跟踪系统，旨在为西班牙足球甲级联赛官方比赛中一队精英足球运动员的工作率特征提供详细分析。从 434 个个体样本中获得了基于观察的表现测量。分析了涉及球员覆盖距离的 6 个物理参数：静强度（0-11km·h（-1））、低强度跑动（11.1-14km·h（-1））、中强度跑动（14.1-17km·h（-1））、高强度跑动（17.1-21km·h（-1））、非常高强度跑动（21.1-24km·h（-1））和冲刺（>24km·h（-1））。这些强度阈值是根据 4 个上下文变量考虑的：比赛状态、比赛地点、对手水平和比赛半场，这些变量与有效比赛时间有关。采用描述性分析和多变量混合模型对足球比赛中的变化过程进行了分析。在有效比赛时间内，球员在不同工作强度下覆盖的总距离（m）在主场比赛时更大（3931 比客场 3887），当参考队落后时（3975 比平局 3837 和胜利 3921），当对手队水平较高时（4032 比中等 3938 和底部 3736）。相比之下，他们的体能表现在下半场比赛中下降（3822 比上半场 3985）。
