Exercise Program in Cancer and Cognition

Inclusion Criteria:

Postmenopausal female
Maximum age 80 years
Able to speak and read English
Minimum completion of 8 years of education
Diagnosed with Stage 0, 1, 2 or 3a Breast Cancer
Within 2 years post-completion of primary treatment
At least two weeks post-breast conserving surgery or three weeks post-breast conserving surgery with sentinel lymph node biopsy or four weeks post-mastectomy

Exclusion Criteria:

1. Prior treatment with cancer chemotherapy, central nervous system radiation, or intrathecal therapy 2. Clinical evidence of distant metastases 3. Self-report of hospitalization for psychiatric illness within the last two years 4. History of neurologic illness 5. Any of the following breast cancer surgery complications unless approved by the participant's health care provider: persistent seroma requiring aspiration, wound dehiscence, infection, prolonged drain output, lymphedema 6. Reconstructive surgery unless approved by the participant's health care provider 7. Any significant medical condition that would preclude them from exercising (e.g., uncontrolled diabetes, congestive heart failure, angina, uncontrolled arrhythmia or other symptoms that indicate increased risk for an acute cardiovascular or respiratory event) If necessary, we will verify this information with a participant's health care provider 8. Eating disorders or a history of substance abuse 10. Any use of an assisted walking device 11. Recent history of falls or balance problems

Additional Exclusion Criteria for Neuroimaging subgroup:

1. Presence of metal implants (i.e., pacemaker, some stents)