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Virginia Tech Helmet Ratings™ Adult Football Helmet Ratings - May 2012 A total of 15 adult football helmet models that have been evaluated using the STAR evaluation system are included in the May 2012 Virginia Tech Helmet Ratings™. All 15 helmets included in the ratings have been made available to consumers at the time of publication. Helmets with lower STAR values provide a reduction in concussion risk compared to helmets with higher STAR values. Based on this, the best overall rating of 5 Stars has the lowest STAR value. Group rankings are differentiated by pre-determined thresholds. Note: Any player in any sport can sustain a head injury with even the very best head protection. This analysis is based on data trends and probabilities, and therefore a specific person's risk may vary. This variation is likely dominated by genetic differences, health history, and impact factors such as muscle activation. http://www.sbes.vt.edu/nid | 
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狗仔卡
发表于 2012-5-8 09:31
提升卡
置顶卡
变色卡
显身卡
发表于 2012-5-9 09:27