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  • DeFreese, J.D., Weight, E.A., Kerr, Z., Kroshus, E. (2021). Health and well-being measures of collegiate athlete and non-athlete graduates. Journal of Intercollegiate Sport.
  • Kerr, Z. Y., Prim, J., DeFreese, J.D., Thomas, L. C., Simon, J. E., Carneiro, K. A., Marshall, S. W., & Guskiewicz, K. M. (2021). Musculoskeletal Injury History Is Associated With Lower Physical and Mental Health in a Historical Cohort of Former National Football League Players, Journal of Sport Rehabilitation, 1-8.


  • Walton SR, Kerr ZY, Brett BL, Chandran A, DeFreese JD, Smith-Ryan AE, Stoner L, Echemendia RJ, McCrea M, Meehan III WP, Guskiewicz KM. Health-promoting behaviours and concussion history are associated with cognitive function, mood-related symptoms and emotional-behavioural dyscontrol in former NFL players: an NFL-LONG Study. Br J Sports Med. 2021 Jan 4:bjsports-2020-103400. doi: 10.1136/bjsports-2020-103400. Epub ahead of print. PMID: 33397673.


  • Kerr, Z.Y., Chandran, A., Defreese, J.D. Considerations for Present and Future Research on Former Athlete Health and Well-Being. Journal of the American Medical Association Network Open. 
  • DeFreese JD, Baum MJ, Schmidt JD, Goerger BM, Barczak N, Guskiewicz KM, Mihalik JP. Effects of College Athlete Life Stressors on Baseline Concussion Measures. J Sport Rehabil. 2019 Dec 6:1-8. doi: 10.1123/jsr.2018-0378



  • Clark, M. D., Varangis, E. L., Champagne, A. A., Giovanello, K. S., Shi, F., Kerr, Z. Y., … Guskiewicz, K. M. (2018). Effects of career duration, concussion history, and playing position on white matter microstructure and functional neural recruitment in former college and professional football athletes. Radiology, 000(0), 1–11. doi:


  • Gates, K., Lane, S., Varangis, E., Giovanello, K. S., & Guskiewicz, K. (2017). Unsupervised classification during time-series model building. Multivariate Behavioral Research,52(2),129-148. doi: 10.1080/00273171.2016.1256187
  • Kerr, Z. Y., Register-Mihalik, J. K., Kay, M. C., Defreese, J. D., Marshall, S. W., & Guskiewicz, K. M. (2017). Concussion nondisclosure during professional career among a cohort of former national football league athletes. American Journal of Sports Medicine, XX(X), 1–8. doi:10.1177/0363546517728264
  • Lynall, R. C., Pietrosimone, B., Kerr, Z. Y., Mauntel, T. C., Mihalik, J. P., & Guskiewicz, K. M. (2017). Osteoarthritis prevalence in retired national football league players with a history of concussion and lower extremity injury. Journal of Athletic Training, 52(6), 518–525. doi:


  • Kerr ZY, Register-Mihalik JK, Kroshus E, Baugh CM, & Marshall SW. Motivations associated with non-disclosure of self-reported concussions in former collegiate athletes. American Journal of Sports Medicine. 2016;44(1):220-225.


  • Pietrosimone B, Golightly YM, Mihalik JP, Guskiewicz KM. Concussion frequency associates with musculoskeletal injury in retired NFL players. Medicine and Science in Sports and Exercise. 2015;47(11):2366-2372.
  • Kerr ZY, Littleton A, Cox LM, DeFreese JD, Varangis E, Lynall RC, Schmidt JD, Marshall SW, & Guskiewicz KM. Estimating contact exposure in football using the Head Impact Exposure Estimate (HIEE). Journal of Neurotrauma. 2015;32(14):1083-1089.
  • Kerr ZY, Mihalik JP, Guskiewicz KM, Rosamond WD, Evenson KR, & Marshall SW. Agreement between athlete-recalled and clinically documented concussion histories in former collegiate athletes.  American Journal of Sports Medicine. 2015;43(3):606-613.


  • Kelly DF, Chaloner C, Evans D, Mathews A, Cohan P, Wang P, Swerdloff R, Shin M-S, Lee1 J, Wright MJ, Kernan C, Barkhoudarian G, Yuen KCJ, Guskiewicz KM. (2014). Prevalence of pituitary hormone dysfunction, metabolic syndrome and impaired quality of life in retired professional football players: A prospective study.  Journal of Neurotrauma. 2014;31(13):1161-1171.
  • Kerr ZY, DeFreese JD, & Marshall SW.  Current physical and mental health of former collegiate athletes. Orthopaedic Journal of Sports Medicine. 2014;2(8), doi:10.1177/2325967114544107.
  • Kerr ZY, Register-Mihalik JK, Marshall SW, Evenson KR, Mihalik JP, & Guskiewicz KM. Disclosure and non-disclosure of concussion and concussion symptoms in athletes: Review and application of the socio-ecological framework.  Brain Injury. 2014;28(8):1009-1021.
  • Kerr ZY, Evenson KR, Rosamond WD, Mihalik JP, Guskiewicz KM, & Marshall SW. Association between concussion and mental health in former collegiate athletes. Injury Epidemiology. 2014;1(28). doi:10.1186/s40621-014-0028-x.