Objectives: To evaluate the association of leptin rs7799039 and adiponectin rs2241766 gene polymorphisms on daily sleep duration in 4-5-year-old children.
Methods: Data were obtained from the Predictors of Maternal and Infant Excess Body Weight - PREDI Study, a cohort study conducted in Joinville - Brazil. The current study is a cross-sectional study, which was carried out in the homes of the participants between July 2016 and August 2017.