Effects of Quinoa Consumption on Markers of Cardiovascular Risk and Gastrointestinal Health

NCT ID: NCT03036618

Last Updated: 2017-01-30

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

30 participants

Study Classification

INTERVENTIONAL

Study Start Date

2016-08-31

Study Completion Date

2018-09-30

Brief Summary

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Quinoa is possible alternative to wheat, corn and rice due to its high nutritional value and possible properties against cardiovascular diseases and for improving gut health. There are some animal studies to suggest that some important class of compounds like fibre, antioxidants and protein, found naturally in quinoa, have beneficial effects against markers of cardiovascular diseases. However, the effects of quinoa on humans has rarely been investigated. This study will investigate the effects of daily consumption of quinoa for four weeks on markers of cardiovascular risk, including blood cholesterol and resting blood pressure, and on gut health in a randomised cross-over study design.

Detailed Description

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Quinoa is a possible alternative to wheat, corn and rice due to its high nutritional value and possible properties against cardiovascular diseases. There are some animal studies which suggest that quinoa has beneficial effects against markers of cardiovascular diseases, particularly blood lipid profile. The grain has a unique nutritional profile, with high fibre levels and a wide range of phytochemicals which may influence gut bacteria and improve gastrointestinal health.

However, the effects of quinoa on humans has rarely been investigated with just two small interventions published. These studies also showed an improvement in blood lipid profile after consuming quinoa daily. There have been no studies which have investigated the effects of quinoa on gut bacteria and gastrointestinal health. Therefore, this human dietary intervention study aims to determine the effects of quinoa consumption on markers of cardiovascular diseases, the gut microbiome and gastrointestinal health.

The study is a randomized cross-over designed dietary intervention study with 4-week study periods separated by a 4-week wash-out period. The treatment will be the daily consumption of a test bread roll containing quinoa to deliver 20g quinoa per day (one roll per day). The control will be the same amount of a refined wheat roll. Markers of cardiovascular disease risk, including fasting blood lipid profile, plasma glucose and insulin concentration, resting blood pressure will be compared at the beginning and end of each treatment period. Changes in the numbers and species of gut bacteria, and products of bacterial fermentation will be made in stool samples collected at the beginning and end of each intervention period as indicators of gastrointestinal health.

Conditions

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Change in Fasting Plasma LDL-cholesterol Concentration After the Consumption of Quinoa

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Study Groups

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Wheat

Test wheat bread roll (approximately 160g weight) without quinoa.

Group Type PLACEBO_COMPARATOR

Wheat

Intervention Type DIETARY_SUPPLEMENT

Test wheat bread roll (approximately 160g weight) without quinoa.

Quinoa

Test wheat bread roll (approximately 160g weight) delivering 20 g quinoa consumed per day.

Group Type EXPERIMENTAL

Quinoa

Intervention Type DIETARY_SUPPLEMENT

Test wheat bread roll (approximately 160g weight) delivering 20 g quinoa consumed per day.

Interventions

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Quinoa

Test wheat bread roll (approximately 160g weight) delivering 20 g quinoa consumed per day.

Intervention Type DIETARY_SUPPLEMENT

Wheat

Test wheat bread roll (approximately 160g weight) without quinoa.

Intervention Type DIETARY_SUPPLEMENT

Eligibility Criteria

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Inclusion Criteria

1. healthy men \>35 years old
2. body mass index \>25 kg/m2
3. Non-smokers with no known previous history of cardiovascular disease or type 2 diabetes
4. Not receiving any current medication. Supplement users will be included but will be asked to stop taking supplements for the duration of the study

Exclusion Criteria

1. Age ≤ 35 or BMI ≤25
2. Smokers
3. Individuals with known or suspected allergy to wheat
4. Individuals with known history of cardiovascular diseases or type 2 diabetes
5. Individuals with recent weight loss (\>10%) or planning to lose weight during the study
Minimum Eligible Age

35 Years

Maximum Eligible Age

70 Years

Eligible Sex

MALE

Accepts Healthy Volunteers

Yes

Sponsors

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Newcastle University

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Chris Seal, Professor

Role: PRINCIPAL_INVESTIGATOR

Newcastle University

Locations

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NU-Food Research Facility

Newcastle upon Tyne, Tyne and Wear, United Kingdom

Site Status RECRUITING

Countries

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United Kingdom

Central Contacts

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Liangkui Li

Role: CONTACT

Facility Contacts

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Anthony Watson, PhD

Role: primary

Other Identifiers

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NUHEALTH-LL01-Quinoa

Identifier Type: -

Identifier Source: org_study_id

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