OBJECTIVE: Conduct a preliminary randomized trial that compared a 6-week type 2 diabetes (T2D) prevention programme to an educational video control for adults with pre-diabetes. METHODS: Adults (N = 62) with pre-diabetes were randomized to the group-delivered Project Health T2D or an educational video control, completing measures at pre-test, post-test and 3-month follow-up. RESULTS: Participants randomized to the intervention versus control condition showed significantly greater reductions in body fat (d = 0.76, p = 0.002
d = 1.07, p <
0.001), weight (d = 0.59, p = 0.030
0.65, p = 0.017) and body mass index (BMI = kg/m CONCLUSIONS: Project Health T2D produced encouraging reductions in body fat, weight and T2D incidence, and increases in lean mass, and is less intensive than other lifestyle modification T2D prevention programme, suggesting that it might be useful to evaluate in a fully powered efficacy trial with a longer follow-up.