Six core scales were identified with a broad range of symptom items but with limited information on their psychometric properties .
OBJECTIVE To identify  self-reported sport concussion symptom scales  and to describe the psychometric properties of these identified scales .
MEASUREMENT OF HEAD IMPACTS IN COLLEGIATE FOOTBALL PLAYERS: RELATIONSHIP BETWEEN HEAD IMPACT BIOMECHANICS AND ACUTE CLINICAL OUTCOME AFTER CONCUSSION
OBJECTIVE To determine the relationship between recorded head accelerations and impact locations and acute clinical outcome of symptomatology , neuropsychological , and postural stability tests after cerebral concussion in Division I collegiate football players . METHODS A prospect i ve field study was used in which accelerometers were embedded in the football helmets of 88 collegiate football players .  Linear and rotational accelerations of all head impacts sustained over the course of 2004 to 2006 National Collegiate Athletic Association football seasons were collected in real-time . Change scores were calculated on clinical measures from the players ' preseason baseline to postinjury ( within 48 h ) and regressed against the recorded linear and rotational accelerations of the head at the time of the concussion . RESULTS Thirteen concussions were recorded ranging in impact magnitudes of 60.51 to 168.71 g. Linear regression showed no significant relationships between impact magnitude ( linear or rotational acceleration ) or impact location and change scores for symptom severity , postural stability , or neurocognitive function ( P > 0.05 ) . CONCLUSION Our findings suggest that football players are concussed by impacts to the head that occur at a wide range of magnitudes and that clinical measures of acute symptom severity , postural stability , and neuropsychological function all appear to be largely independent of impact magnitude and location . Because of the varying magnitudes and locations of impacts result ing in concussion as well as other factors such as the frequency of subconcussive impacts and number of previous concussions , it may be difficult to establish a threshold for concussive injury that can be applied to all football players
Six core scales were identified with a broad range of symptom items but with limited information on their psychometric properties .
OBJECTIVE To identify  self-reported sport concussion symptom scales  and to describe the psychometric properties of these identified scales .