- Patients will be recruited from the ongoing Randomized Clinical Trial (Walsh University HSR 14-20) that are not returned to play and/or are not asymptomatic at the completion of their involvement in this research protocol. Based on the timeframe for their participation in the aforementioned study, these athletes will be 30 - 50 days post-concussion. At their final visit for the RCT, patients with one of the following criteria will be invited to participate in this research study: