ABSTRACT
Regular appropriate physical activity (PA) is beneficial to health both in adults and children[1]. More active or fit adults tend to develop less chronic diseases than their inactive counterparts[2]. The public health concern about PA in children is great, since early childhood is a critical period in forming lifelong PA habits[3]. Several studies[4, 5] have provided evidence that PA in childhood is a determinant of PA in adulthood. Recently Pate et al.[6] showed that the level of PA tends to track during early childhood, and that less active children tend to remain less active than the majority of their peers. If the children with low levels of PA can be determined, intervention programs elevating PA in these children can be organized.
