Stay on Track: A Study of Exercise Effects During Radiation

Research Design. The investigators will be conducting an randomized trial in 60 women undergoing radiation treatment for breast cancer to examine the feasibility of a 12-week lifestyle intervention that addresses diet and physical activity and to explore the impact on behavioral, biological and psychosocial outcomes. Procedure Summary. Patients who are eligible are consented by the research coordinator, after which a baseline assessment will be scheduled. The baseline assessment requires 60 minutes and includes questionnaires, height/weight, dual energy x-ray absorptiometry (DEXA), and phlebotomy. Participants will also wear the Fitbit for one week to establish baseline activity level. After the baseline assessment, women are then randomly assigned to: the 12-week "Stay on Track" lifestyle intervention or the 12-week self-guided control. Both groups complete a post-intervention and a 3-month follow-up visit identical to their baseline assessment. Self-guided controls can utilize their Fitbit and will receive informative binders 24 weeks' post-intervention.