2. Study Design and Methods Design: Two-arm parallel design single blinded randomized controlled trial. Participants will be randomised to one of two groups 1) exergame-augmented condition; or 2) exergame standard condition for three months duration. Recruitment: Based on our prior studies, participants will be recruited via advertisements placed through home flyers at elementary/middle schools, cub scouts/brownies, recreation centres, health care centres, children's recreation classes, shopping malls and online interest sites.