CHARLOTTESVILLE, VA (JUNE 15, 2021). In this longitudinal study, researchers from Wake Forest School of Medicine and the University of Texas Southwestern in Dallas, Texas, examined the frequency and severity of head impacts experienced by youth football players and how exposure to head impacts changes from one year to the next in returning players. The researchers then compared the resulting data with findings on neuroimaging studies obtained over consecutive years in the same athletes. The comparison demonstrated a significant positive association between changes in head impact exposure (HIE) metrics and changes in abnormal findings on brain imaging studies. Full details of this study can be found in the article "Analysis of longitudinal head impact exposure and white matter integrity in returning youth football players" by Mireille E. Kelley, PhD, and colleagues, published today in the Journal of Neurosurgery: Pediatrics.