PROJECT SUMMARY/ ABSTRACT Candidate. I am a psychology post-doctoral research and clinical fellow with the Massachusetts General Hospital Cardiac Psychiatry Research Program. I hold a PhD in clinical health psychology and a master of health science (MHS) degree in epidemiology. I have first- or co-authored 26 peer-reviewed publications focusing on individual, group, and community-based strategies for physical activity and nutrition promotion, obesity and chronic disease prevention, and the intersection of mental and physical health. My short-term career goals are to develop and refine my clinical research skills with a focus on physical activity promotion. I plan to develop the skills I need to lead a clinical research program by pursuing this K23 award. This award would support my long-term career goals by providing me with the skills to become an independent researcher focused on developing novel interventions to promote physical activity for chronic disease prevention. If the proposed intervention proves successful, it will provide data to pursue future research using this intervention, thereby building the evidence base for patient-oriented multilevel physical activity interventions. Career Development. I will develop this intervention based on relevant theory, patient input, and expertise from my mentorship team: Dr. Jeff Huffman (clinical research, positive psychology), Dr. Elyse Park (qualitative research, motivational interviewing), Dr. Anne Thorndike (metabolic syndrome, environmental interventions), and Dr. Brian Healy (biostatistics). My team consultants, Dr. I-Min Lee (physical activity, measurement) and Dr. Lisa Quintilliani (community-based research, dissemination and implementation) will provide further expertise to support my training goals and research plan. The intervention development, testing, and dissemination process, along with relevant coursework, seminars, and workshops, will support my four training goals: 1) developing analytic skills for qualitative, clinical, and multilevel data, 2) becoming an expert in metabolic syndrome risk and prevention, 3) learning cutting-edge and technology-based physical activity and sedentary behavior measurement, and 4) dissemination and implementation of research findings. Environment. I will conduct this project at Massachusetts General Hospital (MGH), a Harvard Medical School teaching hospital, using its extensive resources for training and supporting clinical researchers and performing top-quality research. The MGH Cardiac Psychiatry Research Program (CPRP), my current research group, will be the primary setting for this award. Led by my primary mentor, Dr. Huffman, the group has performed numerous health promotion trials in patients with cardiovascular disease and diabetes. The CPRP is actively enrolling participants for five trials, including an NHLBI-funded R01 treatment development trial of positive psychology and motivational interviewing in cardiac patients. I will recruit pat...