Which size 4 soccer balls are best? One of the most recognizable and loved sports globally is soccer, and it’s not hard to see why. You can play it almost anywhere, and the only equipment ...

In this study, Nauman’s lab tested three soccer ball sizes – a 4, 4.5 and a 5 – by kicking them against a force plate in a lab. Even though only size 5 balls are played by professional adults, the ...