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

Completed

Conditions

Intervention / Treatment

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

Interventional

Enrollment

280

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

  • 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

Ages Eligible for Study

16 years to 73 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

Outcome Measure
glycaemic index

Secondary Outcome Measures

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

Glycaemic Index Testing, Inc.

Collaborators

Sydney University Glycaemic Index Research Services
ILSI Europe

Investigators

  • 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

November 1, 2005

Study Completion

April 1, 2006

Study Registration Dates

First Submitted

November 30, 2005

First Submitted That Met QC Criteria

November 30, 2005

First Posted (Estimate)

December 2, 2005

Study Record Updates

Last Update Posted (Estimate)

June 9, 2006

Last Update Submitted That Met QC Criteria

June 7, 2006

Last Verified

June 1, 2006

More Information

Terms related to this study

Keywords

Other Study ID 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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