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.
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
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
280
glycaemic index
within-individual variation of glycaemic responses
glycaemic responses assessed as incremental area under the curve
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Abernethy Research
Gainsville, Florida, United States
University of Buffalo
Buffalo, New York, United States
Ohio State University
Columbus, Ohio, United States
University of Sydney
Sydney, New South Wales, Australia
International Diabetes Institute
Melbourne, Victoria, Australia
Glycemic Index Laboratories, Inc.
Toronto, Ontario, Canada
Institute of Nutrition and Food Safety, Chinese Centre for Disease Control and Prevention
Beijing, Beijing Municipality, China
The Royal Veterinary & Agricultural University
Copenhagen, Denmark
National Public Health Institute
Helsinki, Helsinki, Finland
Foodfiles Oy
Kuopio, Kuopio, Finland
...and 18 more locations