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| Name | Class |
|---|---|
| Federal University of Rio Grande do Sul | OTHER |
| Coordenação de Aperfeiçoamento de Pessoal de Nível Superior. | OTHER_GOV |
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The aim of this study is to assess the post-prandial response of four breakfast with different content of dietary fiber and glycemic index on glycemic response and satiety in patients with type 2 diabetes.
Design study:
Single-blind crossover randomized clinical trial
Hypothesis:
A meal with high GI and high fiber content determines a lower glycemic response compared to a meal with high GI and low fiber content (fiber beneficial effect on glycemic response independent of glycemic index.
Test meals:
Four test meals isocaloric and with the same proportion of macronutrients will be evaluated (5 kcal/kg, 17% of energy provided by protein, 58% of energy provided by carbohydrates, and 25% of energy provided by fat):
Test Meal A:high glycemic index (GI= 60.3%) and high fiber content(5.88g) Test Meal B:high glycemic index (GI= 62.8%) and LOW fiber content(2.05g) Test Meal C:low glycemic index (GI= 37.0%) and high fiber content(5.75g) Test Meal D:low glycemic index (GI= 38.4%) and high fiber content(1.91g)
Outcomes:
Glycemic response: serum glucose and insulin Satiety response: serum ghrelin and subjective assessment of satiety by a specific scale for measurement of appetite in single test meal studies.
Logistic:
Patients will undergo a clinical, nutritional and laboratory evaluation for confirm the inclusion criteria and will be request to give their written informed consent.
All participants will test each meal with a mean of seven days separating the individual test days.A 12h fast will precede all the study visits.Pre-and postprandial blood samples will be draw to determine the concentrations of serum insulin and plasma glucose, and ghrelin through an antecubital cannula before and 15, 30, 45, 60, 90, 120 and 180 min after the test meals. The VAS scale will be applied in these times.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| meal D | Experimental | low fiber and low GI |
|
| meal C | Experimental | low Fiber and High GI |
|
| meal B | Experimental | high Fiber and low GI |
|
| meal A | Experimental | high fiber and high GI meal |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| GI and fiber meals | Other | meals with different fiber content and glycemic index |
|
| Measure | Description | Time Frame |
|---|---|---|
| glycemic control | glucose and insulin | fasting and post-prandial (differents times during 180 minutes) |
| Measure | Description | Time Frame |
|---|---|---|
| measures of satiety and appetite | ghrelin and subjective analogue scale of appetite | fasting and post-prandial (different times for 180 min) |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Flávia M Silva | Contact | 93771824 | flavia.moraes.silva@hotmail.com |
| Name | Affiliation | Role |
|---|---|---|
| Flávia M Silva | Hospital de Clínicas de Porto Alegre | Study Chair |
| Thais Steemburgo | Hospital de Clínicas de Porto Alegre | Study Chair |
| Caroline Kramer |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Hospital de Clínicas de Porto Alegre | Recruiting | Porto Alegre | Rio Grande do Sul | Brazil |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 25833777 | Derived | Silva FM, Kramer CK, Crispim D, Azevedo MJ. A high-glycemic index, low-fiber breakfast affects the postprandial plasma glucose, insulin, and ghrelin responses of patients with type 2 diabetes in a randomized clinical trial. J Nutr. 2015 Apr;145(4):736-41. doi: 10.3945/jn.114.195339. Epub 2015 Feb 11. |
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| ID | Term |
|---|---|
| D003924 | Diabetes Mellitus, Type 2 |
| D003920 | Diabetes Mellitus |
| ID | Term |
|---|---|
| D044882 | Glucose Metabolism Disorders |
| D008659 | Metabolic Diseases |
| D009750 | Nutritional and Metabolic Diseases |
| D004700 | Endocrine System Diseases |
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| ID | Term |
|---|---|
| D062407 | Meals |
| ID | Term |
|---|---|
| D005502 | Food |
| D000066888 | Diet, Food, and Nutrition |
| D010829 | Physiological Phenomena |
| D019602 | Food and Beverages |
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| meals | Other | four different meal regarding GI and fiber content |
|
| Hospital de Clínicas de Porto Alegre |
| Study Chair |
| Giovana Menegotto | Hospital de Clínicas de Porto Alegre | Study Chair |