Giving a Low Carbohydrate Diet to Overcome Hypertension

NCT ID: NCT04230928

Last Updated: 2021-12-17

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

NA

Total Enrollment

61 participants

Study Classification

INTERVENTIONAL

Study Start Date

2020-03-05

Study Completion Date

2022-06-30

Brief Summary

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This study will test the preliminary efficacy of adding a very low carbohydrate dietary intervention to the evidence-based DPP-GLB on blood pressure reductions for lower-income AA men and women in a community-based clinic.

Detailed Description

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This study will evaluate the effects of consuming a very low carbohydrate (VLC) diet in a sustainable community care setting, in addition to routine medical care, to African American (AA) with pre-hypertension, hypertension (stage 1-3), or cardiovascular disease risk factors. This study will also secondarily assess the feasibility of following a VLC diet in a low-income, AA population.

Conditions

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Hypertension African Americans Diet, Carbohydrate-Restricted Risk Reduction Behavior

Keywords

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Hypertension Low carbohydrate diet African American race Cardiovascular disease risk Weight loss

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Prospective randomized 2-group study
Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Study Groups

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Standard GLB Control

Individuals will receive the standard Diabetes Prevention Program-Group Lifestyle Balance (GLB) program as outlined by the American Diabetes Association. This program will be taught at the Baylor Scott \& White Health and Wellness Center by trained research staff.

Group Type PLACEBO_COMPARATOR

Standard DPP-GLB diet

Intervention Type OTHER

Participants will learn to follow a very low fat, calorie-restricted diet and track fat grams and caloric intake in standard GLB modules 2,3,5, \& 10

Standard DPP-GLB program modules

Intervention Type BEHAVIORAL

Participants will learn standard DPP-GLB modules for other lifestyle modifications for stress, physical activity, etc. in sessions 1,4,6-9, 11-22

VLC-GLB Intervention

Individuals will receive a version of the DPP-GLB program in which 4 of the 12 modules will teach a very low carbohydrate diet instead of the standard. All other components of the DPP-GLB will follow the standard. This program will be taught at the Baylor Scott \& White Health and Wellness Center by trained research staff.

Group Type EXPERIMENTAL

Very low carbohydrate diet

Intervention Type OTHER

Participants will learn to follow a very low carbohydrate diet in modified versions of GLB modules 2,3,5 \& 10. Participants will learn to track carbohydrate intake

Standard DPP-GLB program modules

Intervention Type BEHAVIORAL

Participants will learn standard DPP-GLB modules for other lifestyle modifications for stress, physical activity, etc. in sessions 1,4,6-9, 11-22

Interventions

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Very low carbohydrate diet

Participants will learn to follow a very low carbohydrate diet in modified versions of GLB modules 2,3,5 \& 10. Participants will learn to track carbohydrate intake

Intervention Type OTHER

Standard DPP-GLB diet

Participants will learn to follow a very low fat, calorie-restricted diet and track fat grams and caloric intake in standard GLB modules 2,3,5, \& 10

Intervention Type OTHER

Standard DPP-GLB program modules

Participants will learn standard DPP-GLB modules for other lifestyle modifications for stress, physical activity, etc. in sessions 1,4,6-9, 11-22

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* 1\) men and women aged ≥ 18 years
* 2\) willingness to participate in a 10-month study
* 3\) systolic blood pressure \> 120 mm/Hg +/- diastolic blood pressure \> 80 mm/Hg
* 4\) African American race

Exclusion Criteria

* 1\) diagnosed congestive heart failure
* 2\) Hypertension stage 4 or higher (e.g., SBP \>180 mm/Hg; DBP \> 110 mm/Hg)
* 3\) received or needing more than 3 anti-hypertensive medications
* 4\) pregnant or planning to become pregnant
* 5\) receiving or needing a heart transplant
* 6\) Using injected long or short-acting insulin for diabetes treatment
* 7\) not African American race
* 8\) unable to speak and read English with fluency
Minimum Eligible Age

18 Years

Maximum Eligible Age

74 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Baylor Research Institute

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Aisha H Montgomery, MD, MPH

Role: PRINCIPAL_INVESTIGATOR

Baylor Scott and White Health

Locations

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Baylor Research Institute

Dallas, Texas, United States

Site Status

Countries

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United States

References

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Gillum RF. Pathophysiology of hypertension in blacks and whites. A review of the basis of racial blood pressure differences. Hypertension. 1979 Sep-Oct;1(5):468-75. doi: 10.1161/01.hyp.1.5.468.

Reference Type BACKGROUND
PMID: 541040 (View on PubMed)

Benjamin EJ, Virani SS, Callaway CW, Chamberlain AM, Chang AR, Cheng S, Chiuve SE, Cushman M, Delling FN, Deo R, de Ferranti SD, Ferguson JF, Fornage M, Gillespie C, Isasi CR, Jimenez MC, Jordan LC, Judd SE, Lackland D, Lichtman JH, Lisabeth L, Liu S, Longenecker CT, Lutsey PL, Mackey JS, Matchar DB, Matsushita K, Mussolino ME, Nasir K, O'Flaherty M, Palaniappan LP, Pandey A, Pandey DK, Reeves MJ, Ritchey MD, Rodriguez CJ, Roth GA, Rosamond WD, Sampson UKA, Satou GM, Shah SH, Spartano NL, Tirschwell DL, Tsao CW, Voeks JH, Willey JZ, Wilkins JT, Wu JH, Alger HM, Wong SS, Muntner P; American Heart Association Council on Epidemiology and Prevention Statistics Committee and Stroke Statistics Subcommittee. Heart Disease and Stroke Statistics-2018 Update: A Report From the American Heart Association. Circulation. 2018 Mar 20;137(12):e67-e492. doi: 10.1161/CIR.0000000000000558. Epub 2018 Jan 31. No abstract available.

Reference Type BACKGROUND
PMID: 29386200 (View on PubMed)

Lackland DT. Racial differences in hypertension: implications for high blood pressure management. Am J Med Sci. 2014 Aug;348(2):135-8. doi: 10.1097/MAJ.0000000000000308.

Reference Type BACKGROUND
PMID: 24983758 (View on PubMed)

Zhang D, Wang G, Zhang P, Fang J, Ayala C. Medical Expenditures Associated With Hypertension in the U.S., 2000-2013. Am J Prev Med. 2017 Dec;53(6S2):S164-S171. doi: 10.1016/j.amepre.2017.05.014.

Reference Type BACKGROUND
PMID: 29153117 (View on PubMed)

Howard G, Prineas R, Moy C, Cushman M, Kellum M, Temple E, Graham A, Howard V. Racial and geographic differences in awareness, treatment, and control of hypertension: the REasons for Geographic And Racial Differences in Stroke study. Stroke. 2006 May;37(5):1171-8. doi: 10.1161/01.STR.0000217222.09978.ce. Epub 2006 Mar 23.

Reference Type BACKGROUND
PMID: 16556884 (View on PubMed)

Lackland DT, Keil JE. Epidemiology of hypertension in African Americans. Semin Nephrol. 1996 Mar;16(2):63-70.

Reference Type BACKGROUND
PMID: 8668862 (View on PubMed)

Kitzman H, Dodgen L, Mamun A, Slater JL, King G, Slater D, King A, Mandapati S, DeHaven M. Community-based participatory research to design a faith-enhanced diabetes prevention program: The Better Me Within randomized trial. Contemp Clin Trials. 2017 Nov;62:77-90. doi: 10.1016/j.cct.2017.08.003. Epub 2017 Aug 12.

Reference Type BACKGROUND
PMID: 28807739 (View on PubMed)

Tiwari S, Riazi S, Ecelbarger CA. Insulin's impact on renal sodium transport and blood pressure in health, obesity, and diabetes. Am J Physiol Renal Physiol. 2007 Oct;293(4):F974-84. doi: 10.1152/ajprenal.00149.2007. Epub 2007 Aug 8.

Reference Type BACKGROUND
PMID: 17686957 (View on PubMed)

Meckling KA, Gauthier M, Grubb R, Sanford J. Effects of a hypocaloric, low-carbohydrate diet on weight loss, blood lipids, blood pressure, glucose tolerance, and body composition in free-living overweight women. Can J Physiol Pharmacol. 2002 Nov;80(11):1095-105. doi: 10.1139/y02-140.

Reference Type BACKGROUND
PMID: 12489929 (View on PubMed)

Rehm CD, Penalvo JL, Afshin A, Mozaffarian D. Dietary Intake Among US Adults, 1999-2012. JAMA. 2016 Jun 21;315(23):2542-53. doi: 10.1001/jama.2016.7491.

Reference Type BACKGROUND
PMID: 27327801 (View on PubMed)

Saslow LR, Kim S, Daubenmier JJ, Moskowitz JT, Phinney SD, Goldman V, Murphy EJ, Cox RM, Moran P, Hecht FM. A randomized pilot trial of a moderate carbohydrate diet compared to a very low carbohydrate diet in overweight or obese individuals with type 2 diabetes mellitus or prediabetes. PLoS One. 2014 Apr 9;9(4):e91027. doi: 10.1371/journal.pone.0091027. eCollection 2014.

Reference Type BACKGROUND
PMID: 24717684 (View on PubMed)

Subar AF, Kirkpatrick SI, Mittl B, Zimmerman TP, Thompson FE, Bingley C, Willis G, Islam NG, Baranowski T, McNutt S, Potischman N. The Automated Self-Administered 24-hour dietary recall (ASA24): a resource for researchers, clinicians, and educators from the National Cancer Institute. J Acad Nutr Diet. 2012 Aug;112(8):1134-7. doi: 10.1016/j.jand.2012.04.016. Epub 2012 Jun 15. No abstract available.

Reference Type BACKGROUND
PMID: 22704899 (View on PubMed)

Yancy WS Jr, Westman EC, McDuffie JR, Grambow SC, Jeffreys AS, Bolton J, Chalecki A, Oddone EZ. A randomized trial of a low-carbohydrate diet vs orlistat plus a low-fat diet for weight loss. Arch Intern Med. 2010 Jan 25;170(2):136-45. doi: 10.1001/archinternmed.2009.492.

Reference Type BACKGROUND
PMID: 20101008 (View on PubMed)

Diabetes Prevention Program (DPP) Research Group. The Diabetes Prevention Program (DPP): description of lifestyle intervention. Diabetes Care. 2002 Dec;25(12):2165-71. doi: 10.2337/diacare.25.12.2165.

Reference Type BACKGROUND
PMID: 12453955 (View on PubMed)

Armstrong C; Joint National Committee. JNC8 guidelines for the management of hypertension in adults. Am Fam Physician. 2014 Oct 1;90(7):503-4. No abstract available.

Reference Type BACKGROUND
PMID: 25369633 (View on PubMed)

Other Identifiers

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019-268

Identifier Type: -

Identifier Source: org_study_id