Feasibility and Preliminary Effects of the Fit2ThriveMB Pilot Physical Activity Promotion Intervention on Physical Activity and Patient Reported Outcomes in Individuals with Metastatic Breast Cancer

Physical activity research among patients with metastatic breast cancer (MBC) is limited. This study examined the feasibility and potential benefits of Fit2ThriveMB, a tailored mHealth intervention. Insufficiently active individuals with MBC (n = 49) were randomized 1:1 to Fit2ThriveMB (Fit2ThriveMB app, Fitbit, and weekly coaching calls) or Healthy Lifestyle attention control (Cancer.Net app and weekly calls) for 12 weeks. Fit2ThriveMB aimed to increase daily steps via an algorithm tailored to daily symptom rating and step goal attainment. The primary outcome was feasibility defined as ≥ 80 https://clinicaltrials.gov/ct2/show/NCT04129346