Physical inactivity in children is a major public health risk factor and a health objective for the nation. This study aims to investigate the short- and long-term effects of a movement and physical activity program - the Children Health and Motor Programs (CHAMP) on motor competence, perceived motor competence, and physical activity. A secondary aim of this project (i.e., Science of Behavior Change Administrative Supplement) is to examine the immediate (pre- to post-test) effects of the CHAMP intervention on self-regulation and associations between self-regulation and changes in motor competence, perceived motor competence, and physical activity. The long term goal is to provide evidence-based movement experiences during the early childhood years that promote and contribute to overall healthy growth and development.