Fit for Duty: mHealth Intervention for Weight Gain Prevention

Fit for Duty-mobile participants will receive self-regulatory support and behavior change techniques via an initial core intervention delivered through a native smartphone app (includes connected device data, 10 weekly lessons, weekly tailored feedback) and 4 coaching calls (weeks 1, 4, 8, and 16). App based tailored feedback and messaging will continue through 2 years. Optional 4-week refresher e-campaigns are offered every 6 mos. after the initial core intervention. Participants choose to follow either a Small Changes approach or a Large Changes approach and may choose to switch approaches over the 2 years, if desired.

Participants receive digital tools and education on weight gain prevention behaviors at baseline.