Fogarty AE, Guay CS, Simoneau G, et al. – Researchers performed a case-control study of mixed martial arts to evaluate the association of head motion in varying planes with transient loss of consciousness in athletes with brain injuries. They searched the Ultimate Fighting Championship database for events ending with knockouts from 2013 to 2016. A total of 136 fights were identified and 110 videos were included in this investigation. Head motion in the axial plane had a robust correlation with transient loss of consciousness. Head motion in sagittal and coronal planes, non-fist striking implements, and strikes to the mandible or maxilla were other predictors of transient loss of consciousness. They noted that Kaplan-Meier survival curve exhibited a declining rate of knockouts over time. Thus, rotational head acceleration, especially in the axial plane, appeared to be actively correlated with transient loss of consciousness.