Exercise and Health Intervention for Patients With Obsessive Compulsive Disorder (OCD)

Inclusion Criteria: 1. are between 18 and 65 years of age 2. are sedentary, i.e. have not participated in regular aerobic physical exercise for at least 90 minutes per week during the past three months 3. currently engaged in at least 12 weeks of stable dose pharmacotherapy and/or are currently engaged in cognitive-behavioral therapy for the past 13 weeks 4. meet Diagnostic and Statistical Manual of Mental Disorders-IV (DSM-IV) criteria for OCD as assessed by the Structured Clinical Interview for DSM Disorders, Patient Version (SCID-P) 5. have Y-BOCS score greater than 16 Exclusion Criteria: 1. DSM-IV diagnosis of substance abuse/dependence except for nicotine dependence 2. DSM-IV diagnosis of anorexia or bulimia nervosa 3. DSM-IV diagnosis of bipolar disorder 4. history of psychotic disorder or current psychotic symptoms 5. current suicidality or homicidality 6. marked organic impairment 7. physical or medical problems that would not allow for safe exercise participation 8. current pregnancy or intent to become pregnant during the next 12 weeks