Trial Assessing Light Intensity Exercise on the Health of Older Breast Cancer Survivors

The physical activity program will focus on increasing physical activity, starting with a target of 100 minutes per week. The session durations will build over time to 150 minutes per week. Participants will be instructed to walk, or engage in other forms of light-intensity physical activity to achieve these goals. Participants will be instructed on the use of the ratings of perceived exertion scale (6-20). As the participants' health and fitness status improves, frequency, intensity, and session duration will be modified accordingly during weekly support calls. As participants will enter the study engaging in varying levels of physical activity, goals will be responsive to the most recent week's achieved minutes.

Participants in the usual care group will receive no intervention