The Influence of Daily Intake of Whole Grain Barley or Oats on Biomarkers of Cardiovascular Disease

NCT ID: NCT01293604

Last Updated: 2011-10-14

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

COMPLETED

Clinical Phase

NA

Total Enrollment

69 participants

Study Classification

INTERVENTIONAL

Study Start Date

2011-05-31

Study Completion Date

2011-08-31

Brief Summary

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The objectives of this study are the following: 1) to determine the effect of daily consumption of whole grain barley for six week on risk factors of cardiovascular disease compared to a diet low in whole grains, and 2) to compare the effects of daily consumption of whole grain barley to those of whole grain oats for six weeks to determine if the response to these two grains is different.

Detailed Description

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Conditions

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Healthy

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

TRIPLE

Participants Investigators Outcome Assessors

Study Groups

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Whole Grain Barley Diet

A controlled diet containing at least 4 daily servings of whole grain barley.

Group Type EXPERIMENTAL

Daily ingestion of whole grain barley and oats

Intervention Type OTHER

Subjects will be randomly assigned to one of three treatments: 1) a control diet containing 0.7 daily servings of whole grain, 2) a diet containing at least 4 daily servings of whole grain barley or 3) a diet containing at least 4 servings of whole grain oats. After 6 weeks, risk factors of cardiovascular disease will be assessed after a 12 hr fast. During the seventh week, risk factors of cardiovascular disease will be assessed in the postprandial state.

Whole Grain Oats Diet

A diet containing at least 4 servings of whole grain oats.

Group Type ACTIVE_COMPARATOR

Daily ingestion of whole grain barley and oats

Intervention Type OTHER

Subjects will be randomly assigned to one of three treatments: 1) a control diet containing 0.7 daily servings of whole grain, 2) a diet containing at least 4 daily servings of whole grain barley or 3) a diet containing at least 4 servings of whole grain oats. After 6 weeks, risk factors of cardiovascular disease will be assessed after a 12 hr fast. During the seventh week, risk factors of cardiovascular disease will be assessed in the postprandial state.

Low Whole Grain Diet

A control diet containing 0.7 daily servings of whole grain.

Group Type OTHER

Daily ingestion of whole grain barley and oats

Intervention Type OTHER

Subjects will be randomly assigned to one of three treatments: 1) a control diet containing 0.7 daily servings of whole grain, 2) a diet containing at least 4 daily servings of whole grain barley or 3) a diet containing at least 4 servings of whole grain oats. After 6 weeks, risk factors of cardiovascular disease will be assessed after a 12 hr fast. During the seventh week, risk factors of cardiovascular disease will be assessed in the postprandial state.

Interventions

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Daily ingestion of whole grain barley and oats

Subjects will be randomly assigned to one of three treatments: 1) a control diet containing 0.7 daily servings of whole grain, 2) a diet containing at least 4 daily servings of whole grain barley or 3) a diet containing at least 4 servings of whole grain oats. After 6 weeks, risk factors of cardiovascular disease will be assessed after a 12 hr fast. During the seventh week, risk factors of cardiovascular disease will be assessed in the postprandial state.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Men and women between the ages of 25-70 years
* Body mass index (BMI) ≥ 19 and ≤ 38
* Willingness and ability to make scheduled appointments at clinical site as required by study protocol

Exclusion Criteria

* Do not regularly consume breakfast or dislike cereal for breakfast
* Known (self-reported) allergy or adverse reaction to grains (e.g., wheat, gluten, barley)
* Presence of kidney disease, liver disease, gout, untreated or unstable hypothyroidism, untreated or unstable hyperthyroidism, certain cancers, gastrointestinal disease, pancreatic disease, other metabolic diseases, or malabsorption syndromes
* Type 2 diabetes requiring the use of oral antidiabetic agents or insulin
* Fasting triglycerides \> 300 mg/dL
* Fasting glucose \> 126 mg/dL
* Use of cholesterol lowering medication
* Blood pressure \> 180/100 or hypertension treated with calcium channel blockers, direct acting vasodilators, or beta blockers
* History of bariatric or certain other surgeries related to weight control
* History of major surgery within 3 months of enrollment
* Smokers or other tobacco users (during 6 months prior to the start of the study)
* Antibiotic use during the intervention or for 3 months prior to the intervention period
* History of eating disorders or other dietary patterns which are not consistent with the dietary intervention (e.g., vegetarians, very low fat diets, high protein diets)
* Volunteers who have lost 10% of body weight within the last 6 months
* Unable or unwilling to give informed consent or communicate with study staff
* Self-report of alcohol or substance abuse within the past 12 months and/or current acute treatment or rehabilitation program for these problems (long-term participation in Alcoholics Anonymous is not an exclusion)
* Other medical, psychiatric, or behavioral factors that in the judgment of the Principal Investigator may interfere with study participation or the ability to follow the intervention protocol
Minimum Eligible Age

25 Years

Maximum Eligible Age

70 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Kellogg Company

INDUSTRY

Sponsor Role collaborator

United States Department of Agriculture (USDA)

FED

Sponsor Role lead

Responsible Party

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USDA

Principal Investigators

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Janet A Novotny, PhD

Role: PRINCIPAL_INVESTIGATOR

USDA Beltsville Human Nutrition Research Center

Locations

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USDA Beltsville Human Nutrition Research Center

Beltsville, Maryland, United States

Site Status

Countries

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United States

Other Identifiers

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HS34

Identifier Type: -

Identifier Source: org_study_id