For how we live.
A Swedish study of 10,693 ACL reconstructions in registered football players found no link between graft type and revision surgery. Age and playing level mattered far more.
FIFA gave every World Cup match a mandatory three-minute break and the ATP set its first WBGT thresholds. Physiologists who study cooling say three minutes in direct sun does little to core temperature.
As the 2026 World Cup opens, researchers point to last year's Club World Cup as a preview: 31 of 57 matches were played at heat levels guidelines say should have stopped play.
An analysis across the Premier League, La Liga, Serie A, Bundesliga and Ligue 1 found economic losses from player injuries topped 730 million euros in a season, with hamstrings hit hardest.
Heading rates rise about 13% with each age group from under-9s to seniors. Unintended head impacts during headers were rare — 31 in 687 matches — and most common in adults.
A ten-season analysis of 3,750 matches quantifies the load argument footballers have been making. It also states plainly what it cannot show: anything about injury.
A survey of all 211 FIFA member associations found screening near-universal in South America and rare in Oceania, with youth screening starting anywhere from age 6 to 17.