Football Head Impacts Can Cause Brain Changes Even Without Concussion
As the world mourns the loss of Ohio State University football player Kosta Karageorge, who was found dead in an apparent suicide on Nov. 30, concerns about the long term effects of head injuries sustained by footballers continue to mount. A day after Karageorge's death, a study has been released that suggests sports-related head impacts can cause changes in the brain even when there are no outward signs of a concussion.In fact, researchers from Wake Forest Baptist Medical Center in Winston-Salem, N.C., say some high school football players in the study exhibited measurable brain changes after a single season of play, even in the absence of concussion.
The Wake Forest team, lead by Dr. Christopher Whitlow, focused on youth players, a group that until now had been widely overlooked in the research into the effects of the repetitive head impacts associated with a typical season of football. “For every one NFL player, there are 2,000 youth players. That’s close to four million youth players and the vast majority of research on impact-related brain injuries has been on the college and professional level,” says Dr. Whitlow, noting that two-thirds of head impacts occur in practice sessions, not games.
In the first-of-its-kind study, the researchers hooked up 24 high school football players between the ages of 16 and 18 with helmet-mounted sensors to assess the frequency and severity of helmet impacts and then sent them out to play ball. As the players hit the field, the sensors allowed the researchers to monitor the severity of players’ head impacts. The team collected data from the helmets before and after every game and the high school students also underwent pre- and post-season diffusion tensor imaging (DTI) of the brain. “We looked at both structural and functional neuro-imaging and evaluated the players’ neuro-cognitive function,” he says.
“We found some changes in the brain that are concerning,” said Dr. Whitlow. “They are concerning because kids with more impacts had more changes and the kids with fewer impacts had fewer changes.”