The World Cup final between Argentina and Spain at MetLife Stadium on Sunday will have the longest half-time interval in the tournament's history, and the number is smaller than most of the coverage has suggested.
FIFA has informed the two federations that the break will last 17 minutes, against the standard 15. Of that, about 11 minutes is the musical performance and the remaining six covers moving the stage on and off and watering the pitch, RTE reported.
Earlier reporting had put the figure at 25 to 30 minutes, closer to a Super Bowl. That version circulated widely and appears to have been superseded.
The rule
The Laws of the Game provide that players are entitled to an interval not exceeding 15 minutes. Two minutes beyond that is a small departure, but it is a departure, and it comes after the International Football Association Board, which owns the Laws, previously turned down a request from CONMEBOL to extend half-time to 25 minutes on the grounds that a longer period of inactivity was bad for player welfare.
FIFA has not treated the final as a test case in public. It has presented the show as part of the occasion, with proceeds directed to an education fund.
The physiology
The objection is not aesthetic. Muscle temperature falls during any interval, and a 15-minute break is already long enough to bring it substantially back toward resting levels.
Liam Harper, a senior lecturer in physiology at Manchester Metropolitan University, told reporters that "we know a 15-minute half-time period is enough to reduce muscle temperatures back towards resting levels," adding that elevated muscle temperature is associated with greater power output and rate of force development. A longer interval makes the cooling "potentially more pronounced," which bears on both injury risk and performance in the opening minutes of the second half.
His suggested remedy is straightforward and within the teams' control: a short re-warm-up of two to four minutes before the restart, which he said has been shown to benefit sprint and jump performance.
Whether two extra minutes produces a measurable effect on a specific match is not something anyone can say in advance. The physiological direction is clear; the magnitude at this size of extension is not.
The precedent question
The more consequential issue is not Sunday. It is whether the interval becomes a fixture.
FIFA extended half-time for a performance at last year's Club World Cup final, also in the United States, and has now done it at the World Cup final. Two instances is a pattern, and the commercial case for a global audience sitting through a musical set is considerable. The counter-case is the one IFAB already made when it rejected 25 minutes.
For the players, the practical effect on Sunday is that both sides will need to manage a slightly longer wait, and both face it equally. For the sport, the question left open is whether a two-minute exception at the biggest match sets the floor for the next negotiation.
Kick-off is Sunday. Argentina, with Lionel Messi, meet Spain.
