Accounting for Variance in Concussion Tolerance Between Individuals: Comparing Head Accelerations Between Concussed and
- PDF / 944,612 Bytes
- 9 Pages / 593.972 x 792 pts Page_size
- 98 Downloads / 145 Views
Annals of Biomedical Engineering (Ó 2019) https://doi.org/10.1007/s10439-019-02329-7
Special Issue on the NCAA-DoD CARE Consortium Research
Accounting for Variance in Concussion Tolerance Between Individuals: Comparing Head Accelerations Between Concussed and Physically Matched Control Subjects STEVEN ROWSON ,1 EAMON T. CAMPOLETTANO,1 STEFAN M. DUMA,1 BRIAN STEMPER,2 ALOK SHAH,2 JAROSLAW HAREZLAK,3 LARRY RIGGEN,3 JASON P. MIHALIK,4 KEVIN M. GUSKIEWICZ,4 CHRISTOPHER GIZA,5 ALISON BROOKS,6 KENNETH CAMERON,7 THOMAS MCALLISTER,8 STEVEN P. BROGLIO,9 and MICHAEL MCCREA2 1
Department of Biomedical Engineering and Mechanics, Virginia Tech, Blacksburg, VA, USA; 2Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI, USA; 3Department of Epidemiology and Biostatistics, Indiana University School of Public Health, Bloomington, IN, USA; 4Department of Exercise and Sport Science, Matthew Gfeller Sport-Related Traumatic Brain Injury Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; 5Departments of Neurosurgery and Pediatrics, UCLA Steve Tisch BrainSPORT Program, David Geffen School of Medicine, University of California, Los Angeles, CA, USA; 6Department of Orthopedics, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA; 7John A. Feagin Jr. Sports Medicine Fellowship, Keller Army Hospital, United States Military Academy, West Point, NY, USA; 8Department of Psychiatry, Indiana School of Medicine, Indianapolis, IN, USA; and 9 Michigan Concussion Center, University of Michigan, Ann Arbor, MI, USA (Received 30 January 2019; accepted 17 July 2019) Associate Editor Joel Stitzel oversaw the review of this article.
Abstract—Researchers have been collecting head impact data from instrumented football players to characterize the biomechanics of concussion for the past 15 years, yet the link between biomechanical input and clinical outcome is still not well understood. We have previously shown that even though concussive biomechanics might be unremarkable in large datasets of head impacts, the impacts causing injury are of high magnitude for the concussed individuals relative to their impact history. This finding suggests a need to account for differences in tolerance at the individual level. In this study, we identified control subjects for our concussed subjects who demonstrated traits we believed were correlated to factors thought to affect injury tolerance, including height, mass, age, race, and concussion history. A total of 502 college football players were instrumented with helmetmounted accelerometer arrays and provided complete baseline assessment data, 44 of which sustained a total of 49 concussion. Biomechanical measures quantifying impact frequency and acceleration magnitude were compared between groups. On average, we found that concussed subjects experienced 93.8 more head impacts (p = 0.0031), 10.2 more high magnitude impacts (p = 0.0157), and 1.9 9 greater risk-weighted exposure (p = 0.0175) than their physically matched controls. This finding provides fu
Data Loading...
