Post-Concussion Differences Between Buffalo Concussion Treadmill Test (BCTT) and Modified Dynamic Exertion (mEXiT) Test

Inclusion Criteria: * Diagnosed with a sport related concussion within 14 days of injury * Participants referred to exertion therapy after a trained clinician from University of Pittsburgh Medical Center (UPMC) Sports Medicine Concussion Program has interpreted neurocognitive, vestibular, and clinical interview outcomes and determined the participant is capable of completing structured exercise. Exclusion Criteria: * Medically cleared from a previous concussion within the past 6 months * More than 2 previous concussions (excluding current injury) * History of brain surgery or traumatic brain injury (TBI) (based on Glasgow Coma Scale of \<13) * History of neurological disorder (seizure disorder, epilepsy, brain tumors or malformations) * Current history of pre-existing vestibular disorder or oculomotor condition * Currently taking antidepressant, anticoagulant, beta-blocker, or anticonvulsant prescription medications * Incapable of treadmill running up to 5.5 miles per hour (mph) and 4.5 mph for males and females respectively (self-reported). * Diagnosed with a cardiac, peripheral, or cerebrovascular disease (type 1 or 2 diabetes, or renal disease. * Experienced chest pain or shortness of breath while at rest or with mild exertion. * Lose balance because of dizziness or have lost consciousness (aside from concussion) from exertion * Currently have (or have had within the past 12 months) a bone, joint, or soft tissue (muscle, ligament, or tendon) problem that could be made w…