Learning Objectives:

1. Describe the association between history of contact sports participation at pre-injury baseline and total recovery time after concussion sustained during combatives training in military service members. 2. Interpret Kaplan-Meier estimates of time to recovery by level of contact sport history reported at pre-injury baseline. 3. Describe the influence of covariates (sex, history of concussion, varsity status, and SCAT-6 symptom severity scores) on the association between history of contact sports participation at pre-injury baseline and total recovery time after concussion sustained during combatives training in military service members.

Keywords: Military; mTBI; Combatives