Self-reported concussion history among Icelandic female athletes with and without a definition of concussion.

Objective: This study examined whether Icelandic female athletes in contact sports, based their self-reported concussion history on adequate medical definitions, by assessing self-reported concussion history with and without a definition of concussion. Another aim was to examine whether currently active athletes were more knowledgeable of concussions than retired athletes.

Methods: Participants (age = 26.