High Blood Pressure Clinical Trial
Official title:
Five Plus Nuts and Beans Trial
The Five Plus Nuts & Beans Study is a randomized, controlled trial to compare two strategies for translating the results of the DASH (Dietary Approaches to Stop Hypertension) Study into practice for 120 African American participants who are on stable doses of antihypertensive medications. The first arm of our study offers minimal DASH-oriented dietary advice along with a food credit at a local supermarket where they make their own decision of what to eat. The second arm consists of a single one-hour session with a nutrition expert who provides choices and places an on-line order from a community grocery store (Santoni's Market) with targeted purchases of fruits, vegetables, nuts and beans. Our primary outcome is change in blood pressure at 8 weeks. Secondary outcomes are effects on glucose, uric acid, urine potassium excretion, and self-report consumption of fruits and vegetables during the same period.
Unhealthy diets have many social determinants; however, there is a markedly lower availability of components of the DASH diet-recommended foods (such as fresh fruits and vegetables, skim milk and whole grain foods) in predominantly African-American and lower-income neighborhoods compared with Caucasian and higher-income neighborhoods. Unhealthy dietary consumption patterns contribute, in part, to hypertension through deficiencies in potassium, magnesium and vitamin C - all micronutrients with independent blood pressure-lowering effects. Furthermore, use of thiazide-based antihypertensive therapy often worsens deficiencies through increased urinary excretion. Strategies that take into account the multi-level nature of the problem of poor nutrition among low income African Americans are needed to improve adherence to dietary recommendations and reverse micronutrient deficiencies in hypertensive adults. The Five Plus Nuts & Beans Study is a randomized, controlled trial to compare two strategies for translating the results of the DASH (Dietary Approaches to Stop Hypertension) Study into practice for 120 African American participants who are on stable doses of antihypertensive medications. The first arm of our study offers minimal DASH-oriented dietary advice along with a food credit at a local supermarket where they make their own decision of what to eat. The second arm consists of a single one-hour session with a nutrition expert who provides choices and places an on-line order from a community grocery store (Santoni's Market) with targeted purchases of fruits, vegetables, nuts and beans. Following the initial contact, there is a weekly call with the coordinator for a $30 per week food delivery. Food orders are delivered for pick-up weekly by participants at a Baltimore Public Library in participant's neighborhood. Our primary outcome is change in blood pressure at 8 weeks. Secondary outcomes are effects on glucose, uric acid, urine potassium excretion, and self-report consumption of fruits and vegetables during the same period. After completion of the active phase of the trial, we will follow blood pressures in the electronic medical record for one year to assess long-term effects. ;
Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Outcomes Assessor), Primary Purpose: Treatment
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