Stefan Duma, Virginia Tech (image) Virginia Tech Share Print E-Mail Caption Stefan Duma, the department head of biomedical engineering at Virginia Tech, demonstrates a helmet-impact test conducted in laboratory conditions. Testing also assesses impacts that occur during actual game conditions, thanks to sensors installed inside players' helmets. Credit Jim Stroup/Virginia Tech Usage Restrictions None Share Print E-Mail 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.