Subjects/Methods
A randomized controlled trial (RCT) with 662 women of 2-year-old children (with the proportion of overweight and obesity being similar to the general population) was conducted in Sydney, Australia, March 2019–October 2020. The mothers in the intervention group received three telephone support sessions plus SMS messages and mailed-intervention-booklets over a 12 months period i.e., 24–26, 28–30, and 32–34 months of the child’s age. Mothers in the control group received usual care and two mailed booklets on information not related to the intervention. The primary outcome was child’s BMI at 3 years of age. Secondary outcomes were children’s dietary and activity behaviors. All outcome measures were based on mothers’ self-report using standardized tools due to COVID-19 pandemic restrictions.