Wholegrain Cereal Diet and Insulin Sensitivity

May 26, 2014 updated by: rivellese angela, Federico II University

Effect of Whole Grain Rich Diet on Insulin Sensitivity in Individuals With Metabolic Syndrome

A diet with the multiple beneficial characteristics of whole grains and, more in general, of "healthy cereals" favorably influences glucose and insulin metabolism in subjects with metabolic syndrome. Therefore, the aim of the study is to evaluate the long term effects of a diet containing "healthy cereals" versus a control diet, on glucose and insulin metabolism in subjects with metabolic syndrome.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
60

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • 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

  • Italy
      • Naples, Italy, 80131
        • Dept. of Clinical and Experimental Medicine, Federico II 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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

40 years to 70 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Subjects with at least three of the following criteria of metabolic syndrome according to ATPIII-NCEP criteria:

    1. waist circumference >102 for men and 88 for women,
    2. fasting total serum triacyglycerol concentration >1.7 mmol/L,
    3. fasting HDL cholesterol <1.0 mmol/L for men or <1.3 mmol/L for women,
    4. IFG (plasma glucose between 6.1 and 6.9 mmol/L) or
    5. blood pressure >130/85 mmHg or use of blood pressure medication
  • Hypertension in stable control (BP <135/80 mmHg) by means of drugs, which will not be allowed to be changed during the study
  • Absence of main cardiovascular events (IMA, Ictus)

Exclusion Criteria:

  • Diabetes mellitus diagnosed according to history of diabetes or blood glucose ≥ 200 mg/dL (11.1 mmol/L) 2 hours after a 75 g Oral glucose tolerance test (OGTT) to be performed during the run-in period in all the subjects
  • Any drug able to influence glucose and lipid metabolism (hypolipidemic drugs, cholesterol lowering foodstuffs, anti-inflammatory drugs)
  • Renal failure (serum creatinine > 1.5 mg/dL) and liver failure (ALT/AST> 2 times above normal values)
  • Anemia (Hb < 12g/dl) or any other chronic disease

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: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Active Comparator: Wholegrain cereal diet
Treatment with a diet based on wholegrain cereals and foods with low glycemic index
Other: Wholegrain cereal diet
Thirty subjects with metabolic syndrome, after an initial run-in period of 4 weeks, during which they stabilise their own diet and other lifestyle habits, are assigned to a diet based on wholegrain cereals and foods with low glycemic index for a period of 12 weeks. Before and after the dietary treatment, a frequently samples intravenous glucose tolerance is carried out to measure the effects of the intervention on glucose and insulin metabolism. At beginning and at the end of intervention, the subjects consume also a standard test meal to evaluate the postprandial response of glucose, insulin, lipids, oxidative parameters and inflammatory molecules.
Active Comparator: Refined cereal diet
Treatment with a diet based on refined cereals and foods with high glycemic index
Other: Refined cereal diet
Thirty subjects with metabolic syndrome, after an initial run-in period of 4 weeks, during which they stabilise their own diet and other lifestyle habits, are assigned to a diet based on refined cereals and foods with high glycemic index for a period of 12 weeks. Before and after the dietary treatment, a frequently samples intravenous glucose tolerance is carried out to measure the effects of the intervention on glucose and insulin metabolism. At beginning and at the end of intervention, the subjects consume also a standard test meal to evaluate the postprandial response of glucose, insulin, lipids, oxidative parameters and inflammatory molecules.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Insulin Sensitivity (Si)
Time Frame: 12 weeks
Peripheral insulin sensitivity was assessed by FSIGT. A glucose dose of 300 mg/kg body weight was given intravenously followed by a bolus of 0.03 U/kg of insulin injected after 20 min. Blood samples were frequently collected for 3 h for the measurement of plasma glucose and serum insulin concentrations, utilized to calculate the insulin sensitivity index Si
12 weeks

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Postprandial Insulin Changes
Time Frame: 12 weeks
Blood samples during the standard meal test were drawn from an antecubital vein after a 12 h overnight fast and 0, 30, 60, 90, 120, 150 and 180 min postprandial for the measurement of plasma insulin response reported as average mean postprandial increment.
12 weeks
Postprandial Plasma Lipid Changes
Time Frame: 12 weeks
Blood samples during the standard meal test were drawn from an antecubital vein after a 12 h overnight fast and 0, 30, 60, 90, 120, 150 and 180 min postprandial for the measurement of triglyceride response reported as average mean postprandial increment.
12 weeks

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Federico II University

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Chair: Gabriele Riccardi, Prof., Dept. of Clinical and Experimental Medicine, Federico II 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

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
March 1, 2008

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
March 1, 2009

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 1, 2010

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
July 22, 2009

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 23, 2009

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
July 24, 2009

Study Record Updates

Last Update Posted (Estimate)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
June 26, 2014

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 26, 2014

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
May 1, 2014

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 04022009
  • European Community

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