Diet and Physical Activity Counseling and n3-long Chain (PUFA) Supplementation in Obese Pregnant Women
Diet and Physical Activity Counseling and n3-long Chain (PUFA) Supplementation in Obese Pregnant Women
NCT ID: NCT02574767 Phase: NA Status: COMPLETED Enrollment: 1002 Completion: 2019-02
Conditions
Obesity, Pregnancy
Interventions
Lifestyle counseling, PUFA Supplementation, Routine diet & PA, PUFA placebo
Summary
In Chile, 1 out of 4 pregnant women is obese (BMI > 30 kg/m2). This impacts negatively the health of the mother and the offspring during pregnancy. Lifestyle interventions are the primary prevention strategy for gestational diabetes in obese women; however, these interventions have shown null or limited effectiveness. In animals, n-3 long-chain polyunsaturated fatty acid (n3LC-PUFAs) have shown to increase insulin sensitivity through higher production and secretion of adipokines, enhanced fatty acids oxidation, reduction of lipogenesis, and direct anti-inflammatory effects; however evidence in humans and during pregnancy is still very limited. Combining a lifestyle intervention with n3LC-PUFAs supplementation could enhance the metabolic control of obese pregnant women. Objective: to assess the effectiveness of two prenatal nutritional interventions (home-based diet and physical activity counseling and/or n3LC-PUFAs supplementation) delivered to obese pregnant women in achieving better metabolic control in both the mother (lower incidence of gestational diabetes mellitus) and the offspring (lower incidence of macrosomia and lower prevalence of insulin resistance at birth).
Methods: this study is a cluster-randomized trial in which obese pregnant women from 12 primary health care centers (PHCC) will be stratified by socio-economic status (SES) and randomized to one of four parallel study arms. We will recruit 1000 women allocated to: 1 Home-based Diet and physical activity (PA) plus n3LC-PUFAs supplementation (Intervention Group 1, n=250); 2. Routine diet \& PA counseling care plus n3LC-PUFAs supplementation (Intervention Group 2, n=250); 3. Home-based Diet and Physical activity plus placebo for n3LC-PUFA supplementation (Intervention Group 3, n=250); 4. Routine diet \& PA counseling plus placebo (Control Group, n=250). Expected results: we expect that the intervention will contribute to achieving a better metabolic control during pregnancy. Ultimately, we expect th
Primary Outcome
Gestational Diabetes Mellitus (GDM)