The neurobiological effects of repetitive head impacts in collision sports

Liane E. Hunter, Craig A. Branch, Michael L. Lipton

Research output: Contribution to journalReview articlepeer-review

20 Scopus citations


It is now recognized that repetitive head impacts (RHI) in sport have the potential for long-term neurological impairments. In order to identify targets for intervention and/or pharmacological treatment, it is necessary to characterize the neurobiological mechanisms associated with RHI. This review aims to summarize animal and human studies that specifically address Blood Brain Barrier (BBB) dysfunction, abnormal neuro-metabolic and neuro-inflammatory processes as well as Tau aggregation associated with RHI in collision sports. Additionally, we examine the influence of physical activity and genetics on outcomes of RHI, discuss methodological considerations, and provide suggestions for future directions of this burgeoning area of research.

Original languageEnglish (US)
Pages (from-to)122-126
Number of pages5
JournalNeurobiology of Disease
StatePublished - Mar 2019


  • Collision sports
  • Mild traumatic brain injury
  • Repetitive head injuries

ASJC Scopus subject areas

  • Neurology


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