As an initial step of this project, the investigators conducted a need assessments before designing and conducting a train-the-trainer program. The train-the-trainer program aimed to prepare the staff and lay volunteers to conduct and or assist to implement a series of community-based activities and interventions for the participants of Fitter Families Project. Focus group interviews were conducted to obtain feedback and opinion from the trainees . Questionnaire assessments were conducted before, immediately after finishing the training, three months after training.