Glycemic Index
Conditions
Brief summary
To quantify the glycemic index of the SP energy-smart-based nutrition supplement and the SP Glucose-support formula as compared to a glucose drink. We hypothesized that both the energy-smart-based nutritional supplement and the SP Glucose-support formula will have low glycemic index. The aim of the study is to quantify the glycemic index of the SP energy-smart-based nutrition supplement and the SP Glucose-support formula as compared to a glucose drink. We hypothesized that both the energy-smart-based nutritional supplement and the SP Glucose-support formula will have low glycemic index.
Detailed description
Subjects: 9 non-diabetic (HbA1c \< 6.5) males aged 30-55 years with body mass indices ranging from 27.5 to 35 kg∙m-2. Individuals with impaired glucose tolerance will be included as long as they are not diagnosed with diabetes and their HbA1c is less than 6.5. Preliminary Testing: Medical history, weight, height, body composition via dual x-ray absorptiometry (DXA) and glycosylated hemoglobin (HbA1c) measurement. Protocol: After a 10-hour overnight fast, subjects will complete 3 experimental visits in which they will ingest one of three beverages in a randomized order. During experimental visits subjects will either be given the following 3 experimental drinks: * Full SP-glucose balance formula (200 kcal) * Energy smart carbohydrate blend (50 g, 200 kcal) * Liquid dextrose solution in the form of TRUTOL ® Glucose Tolerance Test Beverage (50 g, 200 kcal)
Interventions
Meal replacement drink containing 200 kcal
Carbohydrate blend drink designed for low glycemic responses containing 200 kcal
Liquid Dextrose drink of 200 kcal
Sponsors
Study design
Intervention model description
Randomized Cross-over trial
Eligibility
Inclusion criteria
* BMI 27.5 to 35 kg∙m-2
Exclusion criteria
* Diagnosed diabetes * HbA1c \> 6.5 * competitive athletes * body weigh change \> 3kg during last month
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Area Under the Curve of Glucose | 120 minutes | Positive integer of the area under the Curve of glucose |
| Area Under the Curve for Insulin | 120 minutes | Positive integer of the area under the Curve of insulin |
| Blood glucose | 30, 60 and 120 minutes of the glucose challenge | Blood glucose levels |
| Blood insulin | 30, 60 and 120 minutes of the glucose challenge | Blood insulin levels |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| c-peptide | 30, 60, and 120 minutes of the glucose challenge | Blood levels of c-peptide |
| glucagon-like-peptide-1 | 30, 60, and 120 minutes of the glucose challenge | Blood levels of glucagon-like-peptide-1 |
| glucagon | 30, 60, and 120 minutes of of the glucose challenge | Blood levels of glucagon |
| Leptin | 30, 60, and 120 minutes of the glucose challenge | Blood levels of leptin |
| Adiponectin | 30, 60, and 120 minutes of the glucose challenge | Blood levels of adiponectin |
Countries
United States