Date: 13 Oct 2011
The Relationship Between Subconcussive Impacts and Concussion History on Clinical Measures of Neurologic Function in Collegiate Football Players
Rent the article at a discountRent now
* Final gross prices may vary according to local VAT.Get Access
Concussions sustained during college and professional football careers have been associated with both acute and chronic neurologic impairment. The contribution of subconcussive impacts to this impairment has not been adequately studied. Therefore, we investigated the relationship between subconcussive impacts and concussion history on clinical measures of neurologic function. Forty-six collegiate football players completed five clinical measures of neurologic function commonly employed in the evaluation of concussion before and after a single season. These tests included the Automated Neuropsychological Assessment Metrics, Sensory Organization Test, Standardized Assessment of Concussion, Balance Error Scoring System, and Graded Symptom Checklist. The Head Impact Telemetry (HIT) System recorded head impact data including the frequency, magnitude, and location of impacts. College football players sustain approximately 1,000 subconcussive impacts to the head over the course of a season, but for the most part, do not demonstrate any clinically meaningful changes from preseason to postseason on measures of neurologic function. Changes in performance were mostly independent of prior concussion history, and the total number, magnitude and location of sustained impacts over one season as observed R 2 values ranged between 0.30 and 0.35. Repetitive subconcussive head impacts over a single season do not appear to result in short-term neurologic impairment, but these relationships should be further investigated for a potential dose–response over a player’s career.
Associate Editor Stefan M. Duma oversaw the review of this article.
Cantu, R. C. Recurrent athletic head injury: risks and when to retire. Clin. Sports Med. 22:593–603, x, 2003.
Cernich, A. N., D. Reeves, W. Sun, and J. Bleiberg. Automated neuropsychological assessment metrics sports medicine battery. Arch. Clin. Neuropsychol. 22S:S101–S114, 2007.CrossRef
Gessel, L. M., S. K. Fields, C. L. Collins, R. W. Dick, and R. D. Comstock. Concussions among United States high school and collegiate athletes. J. Athl. Train 42:495–503, 2007.PubMed
Guskiewicz, K. M., J. P. Mihalik, V. Shankar, S. W. Marshall, D. H. Crowell, S. M. Oliaro, M. F. Ciocca, and D. N. Hooker. Measurement of head impacts in collegiate football players: relationship between head impact biomechanics and acute clinical outcome after concussion. Neurosurgery 61:1244–1252, 2007.PubMedCrossRef
Guskiewicz, K. M., N. L. Weaver, D. A. Padua, and W. E. Garrett, Jr. Epidemiology of concussion in collegiate and high school football players. Am. J. Sports Med. 28:643–650, 2000.PubMed
McCrea, M. Standardized mental status testing on the sideline after sport-related concussion. J. Athl. Train. 36:274–279, 2001.PubMed
McCrea, M., J. P. Kelly, J. Kluge, B. Ackley, and C. Randolph. Standardized assessment of concussion in football players. Neurology 48:586–588, 1997.PubMed
McKee, A. C., R. C. Cantu, C. J. Nowinski, E. T. Hedley-Whyte, B. E. Gavett, A. E. Budson, V. E. Santini, H. S. Lee, C. A. Kubilus, and R. A. Stern. Chronic traumatic encephalopathy in athletes: progressive tauopathy after repetitive head injury. J. Neuropathol. Exp. Neurol. 68:709–735, 2009.PubMedCrossRef
Riemann, B. L., N. A. Caggiano, and S. M. Lephart. Examination of a clinical method of assessing postural control during a functional performance task. J. Sport Rehabil. 8:171–183, 1999.
Talavage, T. M., E. Nauman, E. L. Breedlove, U. Yoruk, A. E. Dye, K. Morigaki, H. Feuer, and L. J. Leverenz. Functionally-detected cognitive impairment in high school football players without clinically-diagnosed concussion. J. Neurotrauma, 2010.
Valovich, T. C., D. H. Perrin, and B. M. Gansneder. Repeat administration elicits a practice effect with the balance error scoring system but not with the standardized assessment of concussion in high school athletes. J. Athl. Train. 38:51–56, 2003.PubMed
- The Relationship Between Subconcussive Impacts and Concussion History on Clinical Measures of Neurologic Function in Collegiate Football Players
Annals of Biomedical Engineering
Volume 40, Issue 1 , pp 14-22
- Cover Date
- Print ISSN
- Online ISSN
- Springer US
- Additional Links
- Concussion history
- Cumulative exposure
- Subconcussive impacts
- Mild traumatic brain injury
- Industry Sectors
- Author Affiliations
- 1. Matthew A. Gfeller Sport-Related Traumatic Brain Injury Research Center, Department of Exercise and Sport Science, University of North Carolina, 2207 Stallings-Evans Sports Medicine Complex, Campus Box 8700, Chapel Hill, NC, 27599-8700, USA
- 2. Campus Health Services, University of North Carolina, Chapel Hill, NC, USA
- 3. Department of Exercise and Sport Science, University of North Carolina, Chapel Hill, NC, USA