Developing a Sound Body: Open Trial Results of a Group Healthy Lifestyle Intervention for Young Adults with Psychosis.

The mortality disparity for persons with schizophrenia spectrum disorders (SSDs) due to cardiovascular disease is a devastating problem. Many risk factors are present in young adults with psychosis that may be ameliorated with lifestyle interventions. Sixteen participants with SSDs enrolled in an 11-week open trial of a novel lifestyle intervention comprised of group high intensity interval training exercise and health and wellness education. The aims were to evaluate (1) feasibility and (2) impact on sedentary behavior, physical activity, nutritional knowledge, physiological outcomes, and psychological well-being at end of intervention and 11-week follow-up. Attendance rates were 70% or higher for both intervention components and participants reported increased learning about healthy eating and exercise habits. Moderate to large effect sizes were observed for physical activity and sedentary behavior with sustained improvements in sedentary behavior at follow-up. Meaningful changes were not observed in other domains.