stefan, stefan, dumer head of virginia tech's dumer head of virginia tech's biomedical department hasn biomedical department has been much. much. >> the mission is not to end >> the mission is not to end football, but understand what is football, but understand what is better. better. research? research? >> we can tell a college player, >> we can tell a college player, what exposure you have, if you what exposure you have, if you are a are a quarterbacker, lion quarterbacker, lion backer - we can tell you what backer - we can tell you what the exposure is. the exposure is. >> that impact simulated >> that impact simulated 100 gs 100 gs of of slartion on the -- slartion on the -- acceleration on the brain. acceleration on the brain. is. is. >> that's the kind of force you >> that's the kind of force you may experience in a serious car may experience in a serious car crash. crash. so right here on this diagram so right here on this diagram you can see the impacts that you can see the impacts that players are taking. players are taking. >> >> this is how professor this is how professor d

stefan, dumer head of virginia tech's biomedical department has been much. >> the mission is not to endootball, but understand what is better. research? >> we can tell a college player, what exposure you have, if you are a quarterbacker, lion backer - we can tell you what the exposure is. >> that impact simulated 100 gs of slartion on the -- acceleration on the brain. is. >> that's the kind of force you may experience in a serious car crash. so right here on this diagram you can see the impacts that players are taking. >> this is how professor dumer collects his detat with hits, he picks up the angle and acceleration of the head any time a player is hit. >> so the system is showing real-time impacts? >> basically within a couple of seconds of the impact it comes into the antenna and we can see live what happens to the players. >> you can plot this out through a practice or on entire season. >> we were one of the first teams to limit exposure and practices. we had data saying we are getting really high exposure and practice. the data allowed us to see that. >> in 2011 virginia tech teame