GI Interlab 2 Study: Measuring the Glycaemic Index (GI) of Foods

June 7, 2006 updated by: Glycaemic Index Testing, Inc.

Measuring the Glycaemic Index of Foods: Interlaboratory Study #2

The purpose of this study is to assess the extent of and sources of variation in the glycaemic index values of foods measured by different laboratories around the world.

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.

Detailed Description

The glycaemic index values of 3 different foods provided from a central location will be determined in each of 20-30 centers around the world. A standard protocol will be followed, but this protocol leaves room for variation in certain details, such as whether subjects are allowed to have coffee or tea with the test meals or only water, or the method of analyzing blood glucose. Methodologic details, subject demographic information (height, weight, age, and ethnicity), results of local calculations and raw data will be sent to a central location.

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

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.
280

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

  • Australia
    • New South Wales
      • Sydney, New South Wales, Australia
        • University of Sydney
    • Victoria
      • Melbourne, Victoria, Australia, 3162
        • International Diabetes Institute
  • Canada
    • Ontario
      • Toronto, Ontario, Canada, M5C 2X3
        • Glycemic Index Laboratories, Inc.
  • China
    • Beijing
      • Beijing, Beijing, China, 100050
        • Institute of Nutrition and Food Safety, Chinese Centre for Disease Control and Prevention
  • Denmark
      • Copenhagen, Denmark
        • The Royal Veterinary & Agricultural University
  • Finland
      • Helsinki, Finland, FIN-00300
        • National Public Health Institute
      • Kuopio, Finland, FI-70210
        • Foodfiles Oy
  • France
      • Nantes, France, 44200
        • Biofortis
  • Germany
    • Nuthetal
      • Potsdam-Rehbrucke, Nuthetal, Germany, D-14558
        • German Institute of Human Nutrition
  • Italy
      • Milan, Italy, 20133
        • University of Milan
      • Parma, Italy, 43100
        • University of Parma
  • Malaysia
    • Kelantan
      • Kota Bharu, Kelantan, Malaysia
        • University Sains Malaysia
  • Netherlands
      • Maastricht, Netherlands, 6200
        • Nutriscience, BV
  • New Zealand
    • Otago
      • Dunedin, Otago, New Zealand
        • University of Otago
  • Philippines
      • Diliman, Philippines
        • University of the Philippines
  • South Africa
    • Mpumalanga
      • Nelspruit, Mpumalanga, South Africa, 1200
        • GI Foundation of South Africa
    • Potchesfstroom
      • Potchefstroom, Potchesfstroom, South Africa, 2520
        • Potchefstroom University
  • Sweden
      • Lund, Sweden, 222 41
        • Lund University
    • Gotheburg
      • Gothenburg, Gotheburg, Sweden, 413 90
        • Gotheburg University
  • Trinidad and Tobago
    • Trinidad
      • Champs Fleurs, Trinidad, Trinidad and Tobago
        • University of the West Indies
  • United Kingdom
      • London, United Kingdom, W12 0HS
        • Hammersmith Hospital
    • Berkshire
      • Reading, Berkshire, United Kingdom
        • Reading Scientific Services, Ltd.
    • Oxfordshire
      • Oxford, Oxfordshire, United Kingdom, OX3 0BP
        • Oxford Brookes University
    • Surrey
      • Guildford, Surrey, United Kingdom, GU5 7XH
        • University of Surrey
      • Leatherhead, Surrey, United Kingdom, KT22 7RY
        • Leatherhead Food International
  • United States
    • Florida
      • Gainsville, Florida, United States, 32601
        • Abernethy Research
    • New York
      • Buffalo, New York, United States, 14214-3000
        • University of Buffalo
    • Ohio
      • Columbus, Ohio, United States, 43210-1295
        • Ohio State 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

14 years to 71 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Healthy male or female subjects

Exclusion Criteria:

  • Diabetes
  • Pregnancy or lactation

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: Non-Randomized
  • Interventional Model: Crossover Assignment
  • Masking: None (Open Label)

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
glycaemic index

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
within-individual variation of glycaemic responses
glycaemic responses assessed as incremental area under the curve

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.
Glycaemic Index Testing, Inc.

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Sydney University Glycaemic Index Research Services
ILSI Europe

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.
  • Principal Investigator: Thomas MS Wolever, MD, PhD, University of Toronto
  • Principal Investigator: Janette C Brand-Miller, PhD, University of Sydney

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.
November 1, 2005

Study Completion

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.
April 1, 2006

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).
November 30, 2005

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.
November 30, 2005

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.
December 2, 2005

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 9, 2006

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.
June 7, 2006

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.
June 1, 2006

More Information

Terms related to this study

Keywords

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.
  • GIL5047

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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