Verkkoin theory, bicycle helmets may increase cervical spine injury both from direct impacts of the helmet on the road or object and from rotation caused by the. Verkkothis represents an opportunity for helmets to mitigate the risk of concussion only. This chapter addresses the biomechanical studies of impacts and. Verkkoa research team from the u. s. Avoiding a lifetime penalty by creating a duty to scan active nfl players for chronic traumatic encephalopathy. Here’s a look at the last one.