Effect of Coffee Consumption on the Glycemic Index of Khalas Dates Tested in Healthy and Diabetic Subjects

Study Overview
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Brief Summary
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The aim of this study was to evaluate the composition of Khalas, a very common type of dates used in the UAE and to determine the effects of drinking Arabic coffee on the results of GI tests in both healthy and diabetic subjects.

Detailed Description
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Background:The consumption of dates along with coffee is a deeply rooted habit in many societies. This study was designed to determine the effect of coffee consumption on the glycemic index of a common variety of dates (Khalas) tested in healthy subjects and individuals with type 2 diabetes mellitus. Methods:Composition analysis was carried out for Khalas dates (Tamer stage) and the weight of the dates flesh equivalent to 50 g of available carbohydrate was calculated. The study subjects were thirteen healthy volunteers with a mean (± SD) age of 40.2 ± 6.7 years and ten participants with type 2 diabetes mellitus (controlled on lifestyle measures and/or metformin) with a mean HbA1c (± SD) of 6.6 ± (0.7 %) and a mean age (± SD) of 40.8 ± 5.7 years. Each subject was tested on five separate days with 50 g of glucose (on 3 occasions) and 50 g equivalent of available carbohydrates from the dates without coffee (on one occasion) and with coffee (on another occasion). Capillary glucose was measured in the healthy subjects at 0, 15, 30, 45, 60, 90 and 120 min and for the diabetics at 0, 30, 60, 90, 120, 150 and 180 min. The glycemic indices were determined as ratios of the incremental areas under the response curves for the dates alone/with coffee compared to glucose. Statistical analyses were performed using Student's t-tests.

Official Title
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Effect of Coffee Consumption on the Glycemic Index of Khalas Dates Tested in Healthy and Diabetic Subjects

Conditions
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Diabetes Mellitus

Intervention / Treatment
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* Other: Khalas dates


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: required that those in the healthy group were healthy and in the diabetes group that their diabetes was controlled (HbA1c ≤8%) on diet with or without metformin Exclusion Criteria: morbid obesity (BMI > 40 kg/m2) pre diabetes pregnancy presence of gastroenterological disorders alimentary tract surgery a history of gastroenteritis in the prior six months any alcohol intake smoking taking any medications (except metformin) poorly controlled diabetes (HbA1c > 8%) and the presence of acute or chronic diseases

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 60 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: GI of Khalas dates<br>The Glycemic indices of the Khalas dates were measured for healthy and diabetic subjects. | Other: Khalas dates<br>* every subject recieved 50 grams reducing carbohydrates equivalent of khalas dates<br>|
| Experimental: GI of the Khalas dates with Coffee<br>measuring the effect of 100 ml of coffee consumption on the GI of the Khalas dates among healthy and diabetic subjects. | Other: Khalas dates<br>* every subject recieved 50 grams reducing carbohydrates equivalent of khalas dates<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Glycemic Index of Khalas dates with and without coffee | Every subject recieved 50 grams reducing sugars of Khalas dates with and without coffee. Measuring glucose level over 2 hours in Healthy subjects and over 3 hours in diabetic subjects as per a standard protocol. | 2 or 3 hours | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Glycemic index, Dates, Diabetes, Coffee