LAUSR

BACKGROUND Demographic correlates of movement behaviors in infants are unclear. This study examined the longitudinal associations between demographic correlates and movement behaviors in infants. METHODS Participants were 411 parents of infants from the Early Movers project in Edmonton, Canada. Movement behaviors, infant and parental age, and nonparental care time were assessed using a parental questionnaire at 2, 4, and 6 months of age. Other infant and parental demographic variables were assessed at 2 months of age. Linear and generalized linear mixed models were conducted. RESULTS Infant age was associated with all movement behaviors except for restrained time. White infants and those with older parents had less tummy time but increased odds of having reading time. Infants of the most educated parents also had lower tummy time. Higher parental education and more siblings were associated with no screen time and longer infant sleep time. Infants with immigrant parent(s) were less likely to have reading time. No associations were found for infant sex, time spent in nonparental care, and parental marital status. CONCLUSION Since no single demographic group demonstrated healthy patterns for all movement behaviors, promotion of a healthy balance of movement behaviors may be needed universally for all infants.