Abstract Summary
T2 MRI relaxation times of the ankle tibiotalar cartilage, plantar pressure and finite element predicted von Mises cartilage stress were evaluated in 10 novice and 10 marathon experienced (ME) runners who ran barefoot for 5km. After running, ME runners decreased tibiotalar cartilage stress and maintained similar pre-run T2 relaxation values. In contrast, novice runners showed similar levels of cartilage stress pre and post running coupled with increased T2 values. Novice and ME runners exhibit different T2 MRI relaxation times and cartilage stress responses to barefoot running that may play a role in observed novice ankle pathology.
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