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Abstract Details

Head Impact Exposure and Magnitude in High School Football by Player Position
Sports Neurology
IN5 - (-)
004
Recent research suggests that chronic cerebral health risk may be affected by non-concussive head impact exposure, rather than just concussive injuries. Head impact exposure in high school athletes has been directly measured via the Head Impact Telemetry (HIT) System, but no estimation methods for non-instrumented or former athletes exist.
Head impacts of 147 high school football players (16.4 years, 181.1cm, 86.0kg) from two high schools during the 2007-2011 seasons were recorded in practices and games using the HIT System. Algorithms were developed to estimate the average frequency and magnitude [linear (g's) and rotational acceleration (rad/s/s)] of head impacts experienced by athletes by position.
A total of 115,256 impacts were recorded with 51,586 from game sessions and 63,670 from practice sessions. When examining by player position, impact frequency and magnitude are reported as the combined practice and game mean. When all players were examined, the typical athlete sustained 14.3 impacts per session at 25.7g and 1662.3rad/s/s. When impacts by position were examined, linemen (n=59) sustained 18.4 impacts per session at 25.1g and 1620.4 rad/s/s. Quarterbacks (n=5) sustained 11.5 impacts per session at 28.0g and 1697.2rad/s/s. Receivers, corners and safeties (n=42) collectively sustained 8.6 impacts per session at 25.5g and 1684.2rad/s/s. Lastly, tight ends, linebackers, and running backs (n=41) collectively sustained 14.6 impacts per session at 25.7g and 1662.3rad/s/s.
These data indicate that the number and magnitude of head impacts experienced by high school football athletes varies by position. These findings may be used to estimate head impact exposure in non-instrumented and former high school football athletes.
Authors/Disclosures
Nicole D. Reams, MD, FAAN (Northshore University Health System)
PRESENTER 		Dr. Reams has stock in Beyond Barriers Therapeutics.
James T. Eckner, MD (University of Michigan Dept of PM&R) An immediate family member of Dr. Eckner has received personal compensation for serving as an employee of Autism Alliance of Michigan. The institution of Dr. Eckner has received research support from NIH. The institution of Dr. Eckner has received research support from Department of Defense. Dr. Eckner has received intellectual property interests from a discovery or technology relating to health care. Dr. Eckner has received personal compensation in the range of $500-$4,999 for serving as a CARE Consortium Publication Committee Member with Indiana University. Dr. Eckner has received personal compensation in the range of $0-$499 for serving as a 好色先生al Content Contributor with Move United.
Mark M. Stecker, MD, FAAN (Fresno Institute of Neuroscience) No disclosure on file
Jeffrey S. Kutcher, MD, FAAN (Kutcher Clinic for Sports Neurology) Dr. Kutcher has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for National Basketball Association.
Steven Broglio, PhD (NeuroTrauma Research Laboratory) Dr. Broglio has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for MCW. Dr. Broglio has received personal compensation in the range of $0-$499 for serving as a Consultant for U Calgary. Dr. Broglio has received personal compensation in the range of $5,000-$9,999 for serving as an Expert Witness for Montgomery McCracken Walker & Rhoads LLP. The institution of Dr. Broglio has received research support from DoD. The institution of Dr. Broglio has received research support from NCAA.