No cumulative effects for one or two previous concussions.

  title={No cumulative effects for one or two previous concussions.},
  author={Grant L. Iverson and Brian L. Brooks and Michael R. Lovell and M. William Collins},
  journal={British journal of sports medicine},
  volume={40 1},
BACKGROUND Sports medicine clinicians and the general public are interested in the possible cumulative effects of concussion. OBJECTIVE To examine whether athletes with a history of one or two previous concussions differed in their preseason neuropsychological test performances or symptom reporting. METHOD Participants were 867 male high school and university amateur athletes who completed preseason testing with ImPACT version 2.0. They were sorted into three groups on the basis of number… CONTINUE READING

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