Pediatric Concussion Assessment of Rest and Exertion

Inclusion Criteria: Subjects presenting to one of the study hospital EDs after sustaining a direct or indirect head injury will be eligible if they: * aged 10 through 17.99 years; * have a concussion, defined by Zurich consensus statement; * suffered the initial injury in the previous 48 hours; * are proficient in English or French. Exclusion Criteria: Patients will be excluded if they present with traumatic head injuries with any of the following: * Glasgow Coma Scale ≤13; * abnormality on standard neuroimaging studies, including positive head CT findings (Note: neuroimaging is not required, but may be performed if clinically indicated); * neurosurgical operative intervention, intubation or intensive care required; * multi-system injuries with treatment requiring hospital admission, operating room or procedural sedation in ED (Note: hospital admission for observation or management of ongoing concussion symptoms is not an exclusion criteria); * severe chronic neurological developmental delay resulting in communication difficulties; intoxication at the time of ED presentation as per clinician judgment; * no clear history of trauma as primary events (e.g., seizure, syncope or migraine); * inability to resume physical activities (e.g., fractured extremity or other concomitant injuries); * inability to obtain a proper written informed consent/assent (language barrier, absence of parental authority, developmental delay, intoxication, patient too confused to consent, etc.); * …