Youth football (IMAGE) HealthTech Connex Inc. Caption Brain vital signs concussion study shows cognitive brain function in youth football players can be impaired by repetitive “subconcussive” head impacts Credit HealthTech Connex Inc. Usage Restrictions Editorial use License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.