Effects of Cycling and Virtual Reality on Thinking Speed in Persons With MS (PACE-MS)

Inclusion Criteria: * Speak English as their primary language * Confirmed MS diagnosis by a neurologist * Be relapse and steroid-free for at least 30 days * Mild-to-moderate self-report mobility disability Exclusion Criteria: * History of neurological disorders besides MS or history of uncontrolled psychiatric disorders (ex: major depression) * Have contraindications to exercise, based on the Physical Activity Readiness Questionnaire (PAR-Q) * Currently use medications that may impact cognition (ex: steroids, benzodiazepines) * Currently pregnant * Severe cognitive impairment as measured by the Modified Telephone Interview of Cognitive Status (TICS-M) * No indication of age-related mild cognitive impairment or dementia, based on the MOCA-Blind (i.e., MOCA-Blind ≥19). * High likelihood of motion sickness * Regular cyclist, defined as cycling for at least 150 minutes/week