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

Not Applicable

Completed

• Conditions: Healthy

• Registration Number: NCT00260858
• Lead Sponsor: Glycaemic Index Testing, Inc.

Brief Summary

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.

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 Timeline

• Study Start: 2005-11
• Study First Submitted: 2005-11-30
• Study First Submitted QC: 2005-11-30
• Study First Posted: 2005-12-02
• Study Completion: 2006-04
• Status Verified: 2006-06
• Last Update Submitted: 2006-06-07
• Last Update Posted: 2006-06-09

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 280

Inclusion Criteria

• Healthy male or female subjects

Exclusion Criteria

• Diabetes
• Pregnancy or lactation

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: CROSSOVER

Primary Outcome Measures

Name	Time	Method
glycaemic index

Secondary Outcome Measures

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

Trial Locations

Locations (28)

University of Sydney; 🇦🇺 Sydney, New South Wales, Australia

Glycemic Index Laboratories, Inc.; 🇨🇦 Toronto, Ontario, Canada

Foodfiles Oy; 🇫🇮 Kuopio, Finland

Leatherhead Food International; 🇬🇧 Leatherhead, Surrey, United Kingdom

Oxford Brookes University; 🇬🇧 Oxford, Oxfordshire, United Kingdom

University Sains Malaysia; 🇲🇾 Kota Bharu, Kelantan, Malaysia

GI Foundation of South Africa; 🇿🇦 Nelspruit, Mpumalanga, South Africa

Lund University; 🇸🇪 Lund, Sweden

University of Otago; 🇳🇿 Dunedin, Otago, New Zealand

Nutriscience, BV; 🇳🇱 Maastricht, Netherlands

University of Buffalo; 🇺🇸 Buffalo, New York, United States

Gotheburg University; 🇸🇪 Gothenburg, Gotheburg, Sweden

National Public Health Institute; 🇫🇮 Helsinki, Finland

University of Milan; 🇮🇹 Milan, Italy

University of the Philippines; 🇵🇭 Diliman, Philippines

Institute of Nutrition and Food Safety, Chinese Centre for Disease Control and Prevention; 🇨🇳 Beijing, Beijing, China

University of the West Indies; 🇹🇹 Champs Fleurs, Trinidad, Trinidad and Tobago

German Institute of Human Nutrition; 🇩🇪 Potsdam-Rehbrucke, Nuthetal, Germany

Abernethy Research; 🇺🇸 Gainsville, Florida, United States

Ohio State University; 🇺🇸 Columbus, Ohio, United States

International Diabetes Institute; 🇦🇺 Melbourne, Victoria, Australia

Biofortis; 🇫🇷 Nantes, France

The Royal Veterinary & Agricultural University; 🇩🇰 Copenhagen, Denmark

Reading Scientific Services, Ltd.; 🇬🇧 Reading, Berkshire, United Kingdom

Potchefstroom University; 🇿🇦 Potchefstroom, Potchesfstroom, South Africa

University of Parma; 🇮🇹 Parma, Italy

Hammersmith Hospital; 🇬🇧 London, United Kingdom

University of Surrey; 🇬🇧 Guildford, Surrey, United Kingdom