The glycemic index is a system of assigning a number to carbohydrate-containing foods according to how much each food increases blood sugar. The glycemic index itself is not a diet plan but one of various tools — such as calorie counting or carbohydrate counting — for guiding food choices.
Hi Dr Manisha Sindhu . The area under the curve has been calculated as the incremental area under the blood glucose response curve (IAUC), ignoring the area beneath the fasting concentration. This can be calculated geometrically by applying the trapezoid rule.. See the link: http://www.fao.org/3/w8079e/w8079e0a.htm
Kindly visit...
https://www.researchgate.net/deref/http%3A%2F%2Fwww.fao.org%2F3%2Fw8079e%2Fw8079e0a.htm
Also check...
https://www.researchgate.net/deref/http%3A%2F%2Fwww.fao.org%2F3%2Fw8079e%2Fw8079e0a.htm
Hi Dr Manisha Sindhu . The glucose area under the curve (AUC), which is an index of whole glucose excursion after glucose loading, has been widely used for calculating the glycemic index and for evaluating the efficacy of medications for postprandial hyperglycemia. See the link : Article Glucose area under the curve during oral glucose tolerance t...
To calculate the glycemic index, the area under the curve for a food item is divided by the area under the curve for glucose or for white bread and multiplied by *100
Glycaemic index is the area under the curve of the increment in blood glucose level 2 hours following the ingestion of a carbohydrate meal of 50 g expressed as a percentage of the same response to 50 g Glucose.
Carbohydrates with high glycaemic index include, white bread, potatoes, short grain rice and glucose. Carbohydrates with low glycaemic index include, whole grain cereals, pasta, lentils and legumes.
Kindly check the following RG link:
Article Glycemic index methodology
In which it discusses the most relevant methodological considerations and highlights specific recommendations regarding many aspects as well as calculation of glycaemic response area under the curve.
Also, for most glycemic index data, the area under the curve has been calculated as the incremental area under the blood glucose response curve (IAUC), ignoring the area beneath the fasting concentration. This can be calculated geometrically by applying the trapezoid rule. See the links: 1.http://www.fao.org/3/w8079e/w8079e0a.htm
2.https://www.researchgate.net/post/How_to_calculate_the_area_under_curve_for_calculating_glycemic_index_of_foods
To calculate the area under the curve, you can download GraphPad Prism, the latest version.
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