Football equipment managers nationwide will receive yet another reason to reassess their helmet inventory on Tuesday, when a Virginia Tech research report reveals that two models popular among teenagers might be allowing high rates of concussions.
The Riddell VSR-4, a recently discontinued model still worn by about 75,000 high school and college players, and the Adams A2000, a less prevalent helmet now available for purchase, were the lowest-ranked models in a new testing regimen designed to estimate concussion risk. The full results were to appear on a Virginia Tech Web site as the first publicly available objective data on football helmet performance.
http://www.nytimes.com/2011/05/10/sports/football/10helmets.html?_r=1&hpw