Author: Dr. López del Campo

20 Feb

Posted at 12:31h in Research

https://youtu.be/HXnI-9HUsGs Effective playing time changes how we interpret physical performance in elite football. Most match reports describe performance per 90 minutes.Total distance.High-speed running.Sprint count. But football is not 90 minutes of continuous exposure. In LALIGA, the ball is in play for roughly 55% of total match time. The rest...

18 Feb

Posted at 12:45h in Research

Why the evolution of the scoreboard systematically distorts performance analysis in elite football https://youtube.com/shorts/u5RRCxCYzaY?feature=share Performance does not happen in neutral conditions. In elite football, we often analyse players as if performance were stable. Total distance. High-speed running. Number of passes. Duels won. But performance does not occur in a vacuum. It occurs under a...

17 Feb

Posted at 12:43h in Research

https://youtu.be/Ko8QxIMDseg We compare players every week.Total distance. High-speed running. Duels. Passes. Defensive actions. We assume those numbers describe the player. But do they? In professional football, performance does not emerge in isolation. It emerges in interaction. And that interaction has a name: the opponent. The uncomfortable question If the same player...

10 Feb

Posted at 13:08h in Research

Why comparing football players without respecting their demarcation systematically distorts performance analysis in elite football https://youtube.com/shorts/arMpCYD-btc?feature=share Comparing players is a daily habit in professional football.We compare passes, sprints, accelerations, duels and shots.Dashboards look clean. Rankings look objective.Decisions feel data-driven. But a structural problem sits underneath these comparisons.A bias...

05 Feb

Posted at 13:49h in Research

Comparing players from different competitions is one of the most common practices in performance analysis. It is also one of the most misleading. https://youtube.com/shorts/U1YIO3pL-Ng?feature=share In professional football, physical metrics are often used as a shortcut to describe player capacity. Total distance. High-speed running. Sprint counts. These numbers...