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Abstract
The aim of this study was to examine the influence of extra-time periods on physical performance profiles in elite soccer. Match performance data were collected from players (n=99) during the 2014 FIFA World Cup Finals (FWC). Performance was analysed per minute for total distance covered and distance run in 3 categories: ≤11.0 km. h-1 (low), 11.1-14.0 km. h-1 (medium) and ≥14.1 km. h-1 (high-speed). Additional variables such as the time spent in low, medium and high activities, maximal running speed and the number of sprints per minute were also assessed. Analysis of players who completed the demands of the full 120 min of playing time revealed that total distance, high-intensity running, top speed and high intensity activities declines by 12%, 18%, 3% and 15% respectively, from the first to the second half of the match (P<0.01). In contrast, low intensity activities increase in the second half and especially in the extra-time period in comparison with the first half (P<0.05). The reduction in overall performance is much more acute in extra-time. All of the physical markers studied showed a decline of 15-20% during the extra-time period in comparison to the first half of playing time (P<0.01). As a result, it is vital that technical and physical coaching staff are aware of the decline in this game phase and consequently, influence the team from a tactical and physical focus within a training perspective.