DASH-Sodium Trial in Adolescents (CampDASH)

December 6, 2017 updated by: Berdine Martin, Purdue University
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.

Study Overview

Status

Terminated

Conditions

Intervention / Treatment

Detailed 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.

Study Type

Interventional

Enrollment (Actual)

79

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Indiana
      • Indianapolis, Indiana, United States, 46202
        • Department of Pediatrics, IU School of Medicine
      • West Lafayette, Indiana, United States, 47907-2059
        • Department of Nutrition Science, Purdue University

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

11 years to 15 years (CHILD)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

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

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: PREVENTION
  • Allocation: RANDOMIZED
  • Interventional Model: CROSSOVER
  • Masking: SINGLE

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
EXPERIMENTAL: DASH diet-Low Na diet
DASH style diet, low sodium (1500 mg/d).
Other: DASH diet
DASH style diet rich in fruits, vegetables, and low-fat dairy foods and low in saturated fat and total fat
Other: 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.
ACTIVE_COMPARATOR: DASH diet-High Na diet
DASH style diet, high sodium (3500 mg/d).
Other: DASH diet
DASH style diet rich in fruits, vegetables, and low-fat dairy foods and low in saturated fat and total fat
Other: 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.
ACTIVE_COMPARATOR: Usual diet-Low Na diet
Diet reflecting typical dietary pattern of American adolescents, low sodium (1500 mg/d).
Other: 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.
Other: 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.
ACTIVE_COMPARATOR: Usual diet-High Na diet
Diet reflecting typical dietary pattern of American adolescents, high sodium (3500 mg/d).
Other: 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.
Other: 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.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Mean systolic blood pressure (SBP)
Time Frame: End of 25 day feeding intervention
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
Non-HDL Cholesterol (HDLC)
Time Frame: End of 25 day feeding intervention
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 Outcome Measures

Outcome Measure
Measure Description
Time Frame
Diastolic blood pressure (DBP)
Time Frame: End of 25 day feeding intervention
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
Total cholesterol
Time Frame: End of 25 day feeding intervention
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
HDL-cholesterol
Time Frame: End of 25 day feeding intervention
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
LDL-cholesterol
Time Frame: End of 25 day feeding intervention
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
Cholesterol:HDLC ratio
Time Frame: End of 25 day feeding intervention
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
Triglycerides
Time Frame: End of 25 day feeding intervention
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
Urinary mineral excretion
Time Frame: End of 25 day feeding intervention
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
Regulators of sodium metabolism
Time Frame: End of 25 day feeding intervention
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
Augmentation index
Time Frame: End of 25 day feeding intervention
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
Vasoreactivity
Time Frame: End of 25 day feeding intervention
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

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Purdue University

Collaborators

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

Investigators

  • Principal Investigator: Connie M Weaver, PhD, Department of Nutrition Science, Purdue University
  • Study Director: Berdine R Martin, PhD, Department of Nutrition Science, Purdue University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

October 1, 2016

Primary Completion (ACTUAL)

October 18, 2017

Study Completion (ACTUAL)

October 18, 2017

Study Registration Dates

First Submitted

December 12, 2016

First Submitted That Met QC Criteria

December 12, 2016

First Posted (ESTIMATE)

December 15, 2016

Study Record Updates

Last Update Posted (ACTUAL)

December 8, 2017

Last Update Submitted That Met QC Criteria

December 6, 2017

Last Verified

December 1, 2017

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 1U01HL128834-01A1 (NIH)
  • 1U01HL128834 (NIH)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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