Cancer Survival Through Weight Loss and Exercise

This study will be divided into two phases (Phase I and II) that will differ by the intensity of motivational intervention. In Phase I, participants will receive 6 months of intensive weekly group-based or telephone-based motivational, behavior modifying intervention aimed at improving physical activity levels and dietary habits. Phase II will be an additional 6 months of monthly individualized motivational intervention in order to attain and maintain at least 7% body weight loss. All participants will attend an orientation, 2 run-in sessions, and a baseline assessment prior to the intervention. Participants will then be assigned to either the group based intervention or telephone intervention. The first 30 participants will enter into the group-based intervention and the second 30 will enter into the telephone-based intervention. Follow-up visits will be completed at the end of Phase I (week 25) and Phase II (week 50). Up to 60 women with a previous history of breast cancer will participate in this study.