饮食指南：3种饮食（DG3D）研究方案的行为教学厨房干预预防2型糖尿病在非裔美国成年人。

IF 1.9 3区医学 Q3 MEDICINE, RESEARCH & EXPERIMENTAL

Contemporary clinical trials Pub Date : 2025-10-10 DOI:10.1016/j.cct.2025.108109

Shiba Bailey , Gabrielle M. Turner-McGrievy , Enid A. Keseko , Taylor Duncan , Denine Ward-Johnson , Briana Davis , Sara Wilcox , Daniela B. Friedman , Mark A. Sarzynski , Angela D. Liese

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引用次数: 0

摘要

背景：美国膳食指南（USDG）作为基础公共卫生资源，但其文化适用性对服务不足的人群，包括黑人和非裔美国人（AA）成年人仍然有限。AA人群受肥胖和2型糖尿病（T2DM）的影响不成比例，这突出了针对文化量身定制干预措施的必要性。目的：描述膳食指南：3种饮食（DG3D）研究的设计和方法，旨在评估文化适应性膳食模式在改善AA级成人饮食质量和减少2型糖尿病相关危险因素方面的有效性。干预措施的重点是营养教育和促进健康饮食行为，以支持可持续的饮食改变。方法：DG3D研究是一项为期12个月、单盲、三组随机行为营养干预，旨在评估三种适应美国文化的dgd饮食模式：健康美国、地中海和素食。该研究招募了超重或肥胖且至少有三个额外的2型糖尿病风险因素的AA成年人。参与者被随机分配到三种饮食模式中的一种，并接受以小组为基础的课程、烹饪示范和基于网络的教育内容。主要结局包括在基线、6 个月和12 个月时评估的饮食质量（健康饮食指数[HEI]）、体重和血红蛋白A1c （HbA1c）的变化。结论：DG3D研究是一项新颖、全面的随机试验，评估AA人群（高危人群）的文化定制饮食模式。研究结果有望为包容性饮食政策提供信息，并有助于减少与肥胖和2型糖尿病相关的健康差异。试验注册：ClinicalTrials.gov标识符NCT05254496。

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The Diet Guidelines: 3 Diets (DG3D) study protocol of a behavioral teaching kitchen intervention for type-2 diabetes prevention among African American adults

Background

The U.S. Dietary Guidelines (USDG) serve as a foundational public health resource, yet their cultural applicability to underserved populations, including Black and African American (AA) adults, remains limited. The AA population is disproportionately affected by obesity and type 2 diabetes mellitus (T2DM), highlighting the need for culturally tailored interventions.

Objectives

To describe the design and methodology of the Dietary Guidelines: 3 Diets (DG3D) study, aimed at evaluating the effectiveness of culturally adapted USDG dietary patterns in improving diet quality and reducing risk factors associated with T2DM among AA adults. The intervention focuses on nutritional education and the promotion of healthy eating behaviors to support sustainable dietary change.

Methods

The DG3D study is a 12-month, single-masked, three-arm randomized behavioral nutrition intervention designed to evaluate three culturally adapted USDG dietary patterns: Healthy US, Mediterranean, and Vegetarian. The study recruited AA adults with overweight or obesity and at least three additional risk factors for T2DM. Participants were randomized to one of three dietary patterns and received group-based classes, cooking demonstrations, and web-based educational content. Primary outcomes include changes in diet quality (Healthy Eating Index [HEI]), body weight, and hemoglobin A1c (HbA1c), assessed at baseline, 6 months, and 12 months.

Conclusion

The DG3D study is a novel and comprehensive randomized trial evaluating culturally tailored dietary patterns in the AA population, a high-risk population. Findings are expected to inform inclusive dietary policy and contribute to reducing health disparities related to obesity and T2DM.

Trial registration: ClinicalTrials.gov identifier NCT05254496

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来源期刊

Contemporary clinical trials 医学-药学

CiteScore

3.70

自引率

4.50%

发文量

281

审稿时长

44 days

期刊介绍： Contemporary Clinical Trials is an international peer reviewed journal that publishes manuscripts pertaining to all aspects of clinical trials, including, but not limited to, design, conduct, analysis, regulation and ethics. Manuscripts submitted should appeal to a readership drawn from disciplines including medicine, biostatistics, epidemiology, computer science, management science, behavioural science, pharmaceutical science, and bioethics. Full-length papers and short communications not exceeding 1,500 words, as well as systemic reviews of clinical trials and methodologies will be published. Perspectives/commentaries on current issues and the impact of clinical trials on the practice of medicine and health policy are also welcome.