"It was a small [group of people studied], and I think there will be debate about how these sub-concussive hits were defined and recorded. There may be more accurate devices that could record each hit and the force of each hit, instead of using video and the athlete's opinion," he said, noting that some of these players may, in fact, have had concussions and not known it.
"This is a very important topic, and the more research, the better. But, right now, we've in the very early stages, and this is very preliminary," said Galetta.
Results of the study were published March 6 in the journal PLOS One.
Learn more about head injuries, sports and what you can do to prevent head injuries from the American Association of Neurological Surgeons.
Copyright © 2012 HealthDay. All rights reserved.