NCT02327286

Randomized Clinical Trial of Lifestyle Interventions to Prevent Diabetes in Women With Previous Gestational Diabetes

Prevenção do Diabetes em Mulheres Com Diabetes Gestacional prévio: Estudo multicêntrico de mudanças Intensivas de Estilo de Vida: LINDA-Brasil

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 473 (actual)
• Sponsor: Federal University of Rio Grande do Sul · Academic / Other
• Sex: Female
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

Randomized trial aiming to investigate the effectiveness of a lifestyle intervention program implemented within the first year after a pregnancy complicated by gestational diabetes (GDM), in delaying or preventing the development of type 2 diabetes.

Detailed description

LINDA-Brasil is a multicenter randomized clinical trial to test the effectiveness of a lifestyle intervention program tailored to women with a recent diagnosis of GDM to be implemented within two-year after pregnancy with the goal of preventing type 2 diabetes. It is based on a cohort study of women recruited during pregnancy. At first contact, the study protocol is explained, and it is made clear that not all women enrolled in the cohort will be eligible to participate in the post partum clinical trial. During pregnancy and the immediate post-partum period, women are monitored monthly by telephone to maintain contact. From six weeks to two years after delivery, high risk status is determined and women at high risk are contacted to evaluate their eligibility for the trial. Those potentially eligible are then invited to the research center for an examination prior to randomization. Once eligibility is confirmed, women return to the clinical research center at which point key aspects of the clinical trial protocol are reviewed and remaining questions clarified. Those willing to participate provide specific informed consent and are then allocated to one of the two comparison groups. The randomization scheme is 1:1 by trial arm, stratified by center and has random blocks. Based on results of key previous clinical trials on diabetes prevention, LINDA has tailored its intervention to meet the particular needs of women with previous GDM during their post partum. Building from social cognitive theory, interventions are participant-centered, allowing adaptation to each women´s setting, within the limits of a standardized prevention program with defined goals and structure. Communication strategies are based on motivational interviewing and health coaching approaches that can be implemented in the primary care setting. Follow-up is planned to continue until all women have completed at least 18 months of participation and the average length of follow up for the whole sample is at least three years. Outcomes are assessed at baseline, at 6 months and then annually. Women who develop diabetes will be notified and oriented to seek medical treatment.

Conditions

• Diabetes Mellitus
• Diabetes, Gestational

Interventions

Type	Name	Description
BEHAVIORAL	Promote and support healthy behaviors	* Exclusive breastfeeding for 6 months and partial breastfeeding for at least 3 additional months. * Personally monitored weight loss and maintenance with goal: return to pre-pregnancy weight and, if overweight pre-pregnancy, loss of an additional 5% of body weight. * Healthy eating: avoidance of ultra-processed foods, limited intake of oils, sugars and processed foods, increased intake of foodstuffs in their natural state, regular intake of water, dairy products, unsweetened coffee and tea. * A progressive increase in physical activity of at least 150 minutes of moderate or vigorous physical activity/week (7500 steps/day) and reduction of sedentary behavior with monitoring by personally worn devices.

Timeline

• Start date: 2015-01-01
• Primary completion: 2022-03-31
• Completion: 2022-03-31
• First posted: 2014-12-30
• Last updated: 2022-07-27

Locations

3 sites across 1 country: Brazil