Concussion in professional football

Summary of the research conducted by the National Football League's Committee on Mild Traumatic Brain Injury

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✓In 1994 the National Football League (NFL) initiated a comprehensive clinical and biomechanical research study of mild traumatic brain injury (TBI), a study that is ongoing. Data on mild TBIs sustained between 1996 and 2001 were collected and submitted by NFL team physicians and athletic trainers, and these data were analyzed by the NFL's Committee on Mild Traumatic Brain Injury. At the same time, analysis of game videos was performed for on-field mild TBIs to quantify the biomechanics involved and to develop means to improve the understanding of these injuries so that manufacturers could systematically improve and update their head protective equipment. The findings and analysis of the Committee have been presented in a series of articles in Neurosurgery.

Abbreviations used in this paper:CI = confidence interval; ImPACT = Immediate Postconcussion Assessment and Cognitive Testing; LOC = loss of consciousness; mph = miles per hour; NFL = National Football League; NOCSAE = National Operating Committee on Standards for Athletic Equipment; SI = severity index; TBI = traumatic brain injury.

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Address reprint requests to: David C. Viano, Dr. Med., Ph.D, ProBiomechanics, 265 Warrington Road, Bloomfield Hills, Michigan 48304. email:

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