"The implication -- that there's no change with the ImPACT study, therefore there's no change in the brain -- is not a conclusion I would reach, unless there were no changes in the ImPACT test sequentially during that time," he said.
Results from this research can't be extrapolated to non-college athletes, the study noted. It was funded by the U.S. National Institutes of Health and the National Operating Committee on Standards for Athletic Equipment.
Learn about severe brain damage at Boston University's Center for the Study of Traumatic Encephalopathy.
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