A Mobile Phone Based Pilot Intervention to Prevent Obesity in Latino Preschool Children

To pilot a stand-alone mobile phone intervention with Latino caregivers of 2- to 5-year olds, using a prospective control group design, to assess feasibility and preliminary effect sizes on children's BMI changes (primary outcome) and dietary and physical activity changes (secondary outcomes) at 6 months post-baseline, in preparation for a larger randomized trial to evaluate the intervention's efficacy.

The investigators will pilot an mHealth intervention using a prospective control group design with 66 caregiver-child dyads (33 intervention and 33 comparison) recruited from two community based agencies in East Los Angeles. Fidelity and feasibility will be assessed. Pre- and post- intervention data (child dietary, physical activity, and media viewing behaviors and BMI z-scores) will be collected to estimate preliminary effect sizes and standard deviations. The mHealth intervention has been informed by a previous feasibility study and focus groups with Latino caregivers of 2- to 5-year old children. This mHealth childhood obesity intervention specifically targets Latino mothers, fathers, and grandmothers of 2- to 5-year olds. The intervention focuses on parenting skills, dietary, physical activity, and media-viewing behaviors consistent with American Academy of Pediatrics guidelines.