Keywords: Traumatic Brain Injury, Traumatic brain injury
Motivation: Subconcussive head acceleration is correlated with brain microstructural changes accompanied with long-term cognitive sequelae which pose serious health concerns.
Goal(s): To determine if subconcussive head acceleration affects the brain microstructure of contact sports athlete and evaluate if it is correlated with clinical symptom scores.
Approach: Diffusion MRI was used to study white matter changes over a season of rugby in athletes, relative to controls and own baseline.
Results: Increased cluster size of significant difference identified in contact sport athletes compared with non-contact sport controls suggest axonal damage and is correlated with symptom count and severity even without concussion diagnosis.
Impact: Findings raise importance of integrating neuroimaging in clinical tests of subconcussive head acceleration to determine extent of alteration, design removal from play to allow brain microstructure recovery, and prevent long-term neurologic effects, neuropsychological sequelae, and possible disability.
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