That actually brings up an interesting question... how to interpret the results with regards to kids. If you read any of the stuff that Dr. Stuart/Mayo Clinic presented to USA Hockey with regards to youth concussions, they talk about things like neck strength and kids under 12 being more susceptible to concussions. Looking at the VTech football methodology, the ratings are for adult helmets... so I'm assuming the neck strength they assumed and head weight are for an average adult. How would the results change if you considered the neck strength and head weight of an average peewee hockey player? I'm curious if there is a point at which the weight of added padding actually increases the risk of concussion for kids due to their weaker neck muscles and lower threshold for deceleration. Just found this on the FAQ section of the VTech website: Only adult helmets were evaluated. Can the results be extrapolated to youth helmets?Currently, it is unknown how youth helmets perform relative to adult helmets of the same name. Unfortunately, there are no data to indicate whether youth helmets perform better, worse, or the same as their adult counterparts. We anticipate having a paper published within the next year that will provide insight into this question. The STAR evaluation system was developed based on the head impact exposure of collegiate football players. Youth football players are likely to experience a different head impact exposure, which will require a modified evaluation system. We have begun to collect data from youth football players and recently published a journal article in the Annals of Biomedical Engineering describing the first dataset on youth head impact exposure. However, it may be two more years before we release youth specific ratings.Daniel et al. (2012):http://www.springerlink.com/content/r1w055654612u47j/?MUD=MP