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Full-Size Training Soccer Ball for Kids and Adults
Available exclusively in size 5, this ball is recognized as a Number 5 Soccer Ball, holding special meaning for fans and collectors, serving as memorabilia for the UEFA Champions League and the ...
Purdue University4y
Soccer players’ head injury risk could be reduced with simple adjustments to the ball, study finds
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 ...