TBI Rehabilitation and Activation in Veterans

Inclusion Criteria: * Veteran, age 50-89 years * History (more than 6 months post injury) of mild or moderate TBI defined by the Ohio State University TBI Identification Method and DOD/VA Clinical Practice Guidelines for Definition of TBI * Sufficient vision and hearing to allow cognitive testing * Willingness to participate in water-based exercise program + cognitive training program for eight months * Approval of primary medical provider to participate in a water-based exercise program * Subjective cognitive complaints as evidenced by self-report * English proficiency to allow for cognitive testing * Internet connected device to participate in testing and cognitive training Exclusion Criteria: * Current severe and unstable psychiatric disorder * Diagnosis of dementia, Montreal Cognitive Assessment score less than 18, or delirium * TBI within the past 6 months * Acute illness or unstable chronic illness * Current severe cardiac disease * Severe TBI or open head injury * Inability to exercise consistently * Inability to read, verbalize understanding, and voluntarily sign the Informed Consent