FootballMouth ProtectorsFacial InjuriesLeg InjuriesSports EquipmentNew ZealandNeck InjuriesInjury Severity ScoreCraniocerebral TraumaSprains and StrainsTooth InjuriesBrain ConcussionCompetitive BehaviorProtective DevicesHead Protective DevicesSoft Tissue InjuriesSportsArm InjuriesMandibular InjuriesCardiomegaly, Exercise-InducedSternoclavicular JointDislocationsPhysical Education and TrainingSpinal InjuriesScotlandShoulder DislocationPhysical FitnessQuadriplegiaParaspinal MusclesPneumopericardiumMicrosporidiaSoccerAbbreviated Injury ScaleIncidenceSports MedicineContusionsSpinal Cord InjuriesFractures, BoneHematologic TestsAustraliaProspective StudiesArgentinaGreat BritainSouth AfricaEnglandRisk FactorsSafetyCohort StudiesAbsenteeismPhysical Endurance