Actually, studies found that pee-wee football players get hit with the same G-Forces as the pros (13 to 15 Gs). I can only surmise the same was true for high school and college. I was at an EMS conference when they cited the study. The one below is the only one I could find though. https://link.springer.com/article/10.1007%2Fs10439-012-0530-...