Effects of Schizophrenia and Bipolar Disorder on Exercise Capacity, Pulmonary Function, and Quality of Life

This study measures how schizophrenia and bipolar disorder affect a person's ability to exercise, their lung function, and their quality of life, by comparing these measurements in people with these diagnoses against healthy volunteers. Understanding these differences may help improve the physical health care and exercise recommendations offered to people living with serious mental illness. **You may be eligible if...** - You are between 18 and 65 years old - You have a diagnosis of schizophrenia or bipolar disorder — or you are a healthy volunteer for comparison - You are willing to participate voluntarily **You may NOT be eligible if...** - You have a respiratory, cardiac, neurological, or orthopedic condition that could affect your breathing or exercise capacity - You have a neuropsychiatric condition other than schizophrenia or bipolar disorder Talk to your doctor to see if this trial is right for you.