Football Helmets Don’t Immobilize the Head During Impact
“Bio mechanical researchers have long understood that rotational forces, not linear forces, are responsible for serious brain damage. Including concussions, brain injury complications and brain bleeds.” (55) Rotational acceleration is defined as “when the head comes to a sudden stop, if it’s rotating, and the brain material is twisting inside the head and that can cause concussion and brain injury.” (56) Dr. Christopher Giza, MD pediatric neurology and neurosurgery at