Aerobic Training in Metastatic Breast Cancer

Participants assigned to the progressive stretching group will be provided with a progressive stretching program that matches the aerobic training interventions in terms of program length (16 weeks), social interaction (all sessions will be supervised), and session duration (20-45 minutes/session, ± 10 minutes).

Participants assigned to the nonlinear aerobic training arm will perform no more than 150 minutes per week of structured supervised aerobic training as part of clinical trial participation. Exercise performed outside the structured sessions (i.e., contamination) will be assessed via self-report of exercise behavior using the Godin-Leisure Time Exercise Questionnaire (GLTEQ). For ethical reasons, we will not instruct participants not to exercise outside the structured sessions, but we we will encourage participants to maintain their level of exercise behavior prior to study initiation.

At Weeks 4, and 8, all participants will have a complete blood count (CBC) test performed.

At the end of Week 6, participants repeat the CPET in the nonlinear aerobic training group.