Factors associated with physical inactivity among the pre-school children: A cohort of 1681 participants.

Aim: To investigate the risk factors associated with physical inactivity of young children in Hong Kong.

Methods: This follow-up study was part of a prospective cohort study named Studying Impact of Nutrition on Growth (SING) initiated in 2015. Subjects were recruited from randomly selected local nurseries and kindergartens in Hong Kong.