Background. FUEL Your Life (FYL) is a worksite translation of the Diabetes Prevention Program (DPP). In a randomized controlled trial, participants in a phone coaching condition demonstrated greater weight loss compared to participants in a group coaching or self-study condition. The purpose of this article is to describe the differences in participant reach, intervention uptake, and participant satisfaction for each delivery mode. Method. Employees who were overweight, obese, or at high risk for diabetes were recruited from city-county governments. Process evaluation data were collected from health coach records, participant surveys, and research team records. Differences between groups were tested using Pearson chi-square test and one-way analysis of variance. Results. Employee reach of targeted enrollment was highest for the self-study condition. Overall, intervention uptake was highest in the phone coaching condition. Participants who received phone coaching had increased uptake of the participant manual and self-monitoring of food compared to participants who received group coaching or self-study. Discussion. FYL demonstrated that DPP could be effectively delivered in the worksite by three different modalities. When implemented in a self-study mode, reach is greater but intervention uptake is lower. Phone health coaching was associated with greater intervention exposure.
Keywords: diabetes prevention program; health coach; obesity; process evaluation; translation; worksite health promotion.