Childhood physical activity is a multidisciplinary academic concept and research area focused on the systematic study of physical movement behaviours in individuals from infancy through adolescence. It investigates the types, patterns, determinants (biological, psychological, social, environmental), and consequences (health, developmental, cognitive, social) of physical activities undertaken by this population group. This field is significant for generating evidence to inform public health initiatives, clinical guidelines, and educational strategies aimed at promoting healthy child development and well-being.