Developed for specialists who want to increase the physical activity (PA) level of type 2 diabetic and at-risk individuals, the 10-week DiabetAction program introduced participants to a wide variety of cardiovascular, resistance, balance, and flexibility exercises. Thirty-three of 48 individuals completed the intervention in community-based settings, while 25 of 29 participants completed control group evaluations. A significant time effect (p less than 0.05) was measured for leisure PA level, resting systolic and diastolic blood pressure, estimated aerobic capacity, and dynamic balance (nonsignificant group effect; p greater than 0.05). The physical functioning domain of quality of life improved in the experimental group, while the vitality domain improved in the control group (significant interactions; p less than 0.05). Follow-ups of the experimental group revealed that they maintained postintervention parameters (leisure PA level, proportion of participants greater than or equal to 150 min of PA weekly, estimated aerobic capacity) or improved (mental component summary measure of quality of life). Ninety-four percent of the experimental group was "very" or "extremely" satisfied with the program, and participants perceived improvements in PA level, health, and tiredness postintervention. In conclusion, participants in community-based settings improved on many of the measured parameters and maintained PA practice up to 6 months postintervention. However, since control participants also saw improvements, further controlled studies will be needed. (Contains 6 tables.)