DASH-Sodium Trial in Adolescents

Blood High Pressure Clinical Trial

— CampDASH  

Official title:

DASH-Sodium Trial in Adolescents

Clinical Trial Details — Status: Terminated

Administrative data

• NCT number: NCT02993458
• Other study ID #: 1U01HL128834-01A1
• Secondary ID: 1U01HL128834
• Status: Terminated
• Phase: N/A
• First received: December 12, 2016
• Last updated: December 6, 2017
• Start date: October 2016
• Est. completion date: October 18, 2017

Study information

• Verified date: December 2017
• Source: Purdue University
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The Camp DASH study trial will compare the effect of two dietary patterns and two levels of sodium intake on blood pressure and blood lipids in adolescents in the upper third of distribution for blood pressure. The two dietary patterns are based on the Dietary Approaches to Stop Hypertension (DASH) trial in adults.

Description:

The Camp DASH study is a controlled trial. the aim of which is to compare the effect of two dietary patterns and two levels of sodium intake on blood pressure and blood lipids in adolescents in the upper third of distribution for blood pressure. The study also assesses whether influences on blood pressure and blood lipids of dietary interventions vary according to sex, race/ethnic groups, baseline levels, and other personal characteristics. The proposed dietary interventions of DASH dietary patterns and sodium reduction have been shown to be effective in lowering blood pressure in adults. The two dietary patterns are based on the Dietary Approaches to Stop Hypertension (DASH) trial in adults. They are a Usual diet typical of what many American adolescents eat, and a DASH‐type diet. The DASH diet is rich in fruits, vegetables, and low‐fat dairy foods and low in saturated fat and total fat compared to the Usual diet. The two sodium levels are High reflecting current US consumption and Low reflecting current recommended intake levels. Weight will be held constant by adjusting energy intake. The study participants will live in a residence hall on the Purdue campus where all food and beverages will be provided, and meals and snacks will be supervised.

Recruitment information / eligibility

• Status: Terminated
• Enrollment: 79
• Est. completion date: October 18, 2017
• Est. primary completion date: October 18, 2017
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 11 Years to 15 Years

Eligibility

Inclusion Criteria:

• White, black, Hispanic, and Asian

• SBP in the upper one-third of the distribution for their given sex, age, and height

Exclusion Criteria:

• Pre-existing lipid disorders, abnormal liver or kidney function

• Taking medications that alter mineral absorption or metabolism, affect blood pressure or lipids

• If subjects are taking dietary supplements and refuse to discontinue them 2 months prior to the study.

• Taking non-prescription illegal drugs, smoke, or drink alcohol

• Pregnancy

• Carry an epi pen for food-related allergies

Related Conditions & MeSH terms

• Blood High Pressure
• Hypertension

Intervention

Other:
• DASH diet
DASH style diet rich in fruits, vegetables, and low-fat dairy foods and low in saturated fat and total fat
• Low Na diet
Sodium intake of 1500 mg/d (65 mmol, or 0.75 mg/Kcal/d), representing the Adequate Intake recommended by the Institute of Medicine.
• High Na diet
Sodium intake of 3500 mg/d (152 mmol, or 1.73 mg/Kcal/d, representing the highest sodium intake used for adults in the DASH Sodium trial.
• Usual Diet
The usual diet will include foods that provide the majority of energy for adolescents in the U.S., i.e. grain based desserts, pizza, sugary drinks,pasta, chicken, and chicken mixed dishes.

Locations

Country	Name	City	State
United States	Department of Pediatrics, IU School of Medicine	Indianapolis	Indiana
United States	Department of Nutrition Science, Purdue University	West Lafayette	Indiana

Sponsors (6)

Lead Sponsor	Collaborator
Purdue University	Centers for Disease Control and Prevention, Indiana University School of Medicine, Johns Hopkins University, National Heart, Lung, and Blood Institute (NHLBI), University of California, San Diego

Country where clinical trial is conducted

United States, 

References & Publications (12)

Appel LJ, Moore TJ, Obarzanek E, Vollmer WM, Svetkey LP, Sacks FM, Bray GA, Vogt TM, Cutler JA, Windhauser MM, Lin PH, Karanja N. A clinical trial of the effects of dietary patterns on blood pressure. DASH Collaborative Research Group. N Engl J Med. 1997 Apr 17;336(16):1117-24. — View Citation

Berenson GS, Srinivasan SR, Bao W, Newman WP 3rd, Tracy RE, Wattigney WA. Association between multiple cardiovascular risk factors and atherosclerosis in children and young adults. The Bogalusa Heart Study. N Engl J Med. 1998 Jun 4;338(23):1650-6. — View Citation

Chen X, Wang Y. Tracking of blood pressure from childhood to adulthood: a systematic review and meta-regression analysis. Circulation. 2008 Jun 24;117(25):3171-80. doi: 10.1161/CIRCULATIONAHA.107.730366. Epub 2008 Jun 16. Review. — View Citation

Couch SC, Saelens BE, Levin L, Dart K, Falciglia G, Daniels SR. The efficacy of a clinic-based behavioral nutrition intervention emphasizing a DASH-type diet for adolescents with elevated blood pressure. J Pediatr. 2008 Apr;152(4):494-501. doi: 10.1016/j.jpeds.2007.09.022. Epub 2007 Nov 5. — View Citation

Food and Nutrition Board, Institute of Medicine. 'Sodium and chloride', Dietary Reference Intakes for Water, Potassium, Sodium, Chloride, and Sulfate. Washington, D.C.: National Academies Press; 2005. 269-423.

Palacios C, Wigertz K, Braun M, Martin BR, McCabe GP, McCabe L, Pratt JH, Peacock M, Weaver CM. Magnesium retention from metabolic-balance studies in female adolescents: impact of race, dietary salt, and calcium. Am J Clin Nutr. 2013 May;97(5):1014-9. doi: 10.3945/ajcn.112.039867. Epub 2013 Apr 3. — View Citation

Palacios C, Wigertz K, Martin BR, Braun M, Pratt JH, Peacock M, Weaver CM. Racial differences in potassium homeostasis in response to differences in dietary sodium in girls. Am J Clin Nutr. 2010 Mar;91(3):597-603. doi: 10.3945/ajcn.2009.28400. Epub 2009 Dec 9. — View Citation

Palacios C, Wigertz K, Martin BR, Jackman L, Pratt JH, Peacock M, McCabe G, Weaver CM. Sodium retention in black and white female adolescents in response to salt intake. J Clin Endocrinol Metab. 2004 Apr;89(4):1858-63. — View Citation

Rakova N, Jüttner K, Dahlmann A, Schröder A, Linz P, Kopp C, Rauh M, Goller U, Beck L, Agureev A, Vassilieva G, Lenkova L, Johannes B, Wabel P, Moissl U, Vienken J, Gerzer R, Eckardt KU, Müller DN, Kirsch K, Morukov B, Luft FC, Titze J. Long-term space flight simulation reveals infradian rhythmicity in human Na(+) balance. Cell Metab. 2013 Jan 8;17(1):125-31. doi: 10.1016/j.cmet.2012.11.013. — View Citation

Sacks FM, Svetkey LP, Vollmer WM, Appel LJ, Bray GA, Harsha D, Obarzanek E, Conlin PR, Miller ER 3rd, Simons-Morton DG, Karanja N, Lin PH; DASH-Sodium Collaborative Research Group. Effects on blood pressure of reduced dietary sodium and the Dietary Approaches to Stop Hypertension (DASH) diet. DASH-Sodium Collaborative Research Group. N Engl J Med. 2001 Jan 4;344(1):3-10. — View Citation

Van Horn L, Obarzanek E, Barton BA, Stevens VJ, Kwiterovich PO Jr, Lasser NL, Robson AM, Franklin FA Jr, Lauer RM, Kimm SY, Dorgan JF, Greenlick MR. A summary of results of the Dietary Intervention Study in Children (DISC): lessons learned. Prog Cardiovasc Nurs. 2003 Winter;18(1):28-41. — View Citation

Weaver CM, Martin BR, McCabe GP, McCabe LD, Woodward M, Anderson CA, Appel LJ. Individual variation in urinary sodium excretion among adolescent girls on a fixed intake. J Hypertens. 2016 Jul;34(7):1290-7. doi: 10.1097/HJH.0000000000000960. — View Citation

* Note: There are 12 references in all — Click here to view all references

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Mean systolic blood pressure (SBP)	The primary outcome is mean SBP at the end of each intervention feeding period. Mean end of intervention SBP is the average of daily readings during days 19-25 of each intervention feeding period. Blood pressure will also be measured periodically at baseline and throughout the study.	End of 25 day feeding intervention
Primary	Non-HDL Cholesterol (HDLC)	Fasting blood samples for lipids and other variables will be drawn at the beginning and end of each feeding period	End of 25 day feeding intervention
Secondary	Diastolic blood pressure (DBP)	The secondary outcome is mean DBP at the end of each intervention feeding period. Mean end of intervention DBP is the average of daily readings during days 19-25 of each intervention feeding period. Blood pressure will also be measured periodically at baseline and throughout the study..	End of 25 day feeding intervention
Secondary	Total cholesterol	Fasting blood samples for lipids and other variables will be drawn at the beginning and end of each feeding period.	End of 25 day feeding intervention
Secondary	HDL-cholesterol	Fasting blood samples for lipids and other variables will be drawn at the beginning and end of each feeding period	End of 25 day feeding intervention
Secondary	LDL-cholesterol	Fasting blood samples for lipids and other variables will be drawn at the beginning and end of each feeding period	End of 25 day feeding intervention
Secondary	Cholesterol:HDLC ratio	Fasting blood samples for lipids and other variables will be drawn at the beginning and end of each feeding period.	End of 25 day feeding intervention
Secondary	Triglycerides	Fasting blood samples for lipids and other variables will be drawn at the beginning and end of each feeding period	End of 25 day feeding intervention
Secondary	Urinary mineral excretion	Two 24-hr urine samples at the end of the feeding periods will be analyzed for sodium, potassium, magnesium, and calcium..	End of 25 day feeding intervention
Secondary	Regulators of sodium metabolism	Regulators of sodium homeostasis (renin, aldosterone, angiotensin) will be measured at the beginning and end of the feeding period	End of 25 day feeding intervention
Secondary	Augmentation index	Pulse wave analysis (At Cor Medical) will be used to measure changes in augmentation index (AI) with intervention to index central blood pressure.	End of 25 day feeding intervention
Secondary	Vasoreactivity	Skin flow motion (laser-doppler flowmetry) to measure diet-induced changes in vaso-reactivity will provide mechanistic information on microvascular control.	End of 25 day feeding intervention