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...Background college soccer players suffer repetitive impact to the head throughout their season through heading of a ball both in practice and games they must strike with from defensive offensive positions this exposes them multiple impacts depending on position some will more than others how may affect player s performance neuropsychological testing is unclear there much ongoing debate as effect long term health it has been suggested that should wear protective gear especially at youth level protect developing neurocognitive dysfunction secondary headgear mainly marketed under age where occurrence significantly decreased compared higher levels play many headers occur off bounce studies have shown peak force was reduced by or n clinical efficacy remains be seen specifications law game per fifa laws states circumference cm weight oz grams pressure psi kpa mechanics highest velocity balls might voluntarily are follows goalkeeper punt km h mph dropkick goal kick shot towards striking...