- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01145547
Continuous Glucose Monitoring to Measure Effect of Glycemic Index
The Effect of Glycemic Index on Post-prandial Glycemia (Breakfast vs. Lunch) in Patients With Type 1 Diabetes: Quantification With Continuous Glucose Monitoring
Background: Post-prandial hyperglycemia is common in people with type 1 diabetes.
Objective: The aim was to determine the impact of low vs high glycemic index (GI) on post-prandial glycemia for breakfast vs lunch and to quantify these effects with continuous glucose monitoring.
Design: Seven adult subjects with type 1 diabetes participated in two experiments, each consisting of two meals each. In one experiment, both meals had a low GI; in the other, high GI. Meals were given 195 minutes apart and were matched for carbohydrate, protein, and fat content. Each subject received his usual pre-prandial insulin dosage, followed by a continuous subcutaneous basal insulin infusion for the remainder of the experiment. Arterialized venous glucose was analyzed every 15 minutes and sensor glucose was recorded every 5 minutes.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
Oregon
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Portland, Oregon, United States, 97232
- Legacy Health System--Holladay Park Campus
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-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
- Child
- Adult
- Older Adult
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- clinical diagnosis of type 1 diabetes mellitus
- patients on insulin pump therapy
Exclusion Criteria:Any patient who was
- pregnancy
- cardiovascular, cerebrovascular, kidney, or liver disease
- uncontrolled chronic medical conditions
- oral or parenteral corticosteroid use
- immunosuppressant use
- visual or physical impairments that impede the use of a continuous glucose monitoring device
- insulin or glucagon allergy
- hypoglycemia unawareness
- requirement of greater than 200 units of insulin per day
- gastroparesis
- any prior gastric surgery
- an allergy to any food items served.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Supportive Care
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Active Comparator: low glycemic index effect on post-prandial peak
Seven adult subjects with type 1 diabetes participated in two experiments, each consisting of two meals each.
In one experiment, both meals had a low Glycemic Index.
|
A Dexcom Seven® Plus Continuous Glucose Monitoring sensor was inserted subcutaneously into each subject.
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Active Comparator: high glycemic index effect on post-prandial peak
Seven adult subjects with type 1 diabetes participated in two experiments, each consisting of two meals each.
In one experiment, both meals had a high Glycemic Index.
|
A Dexcom Seven® Plus Continuous Glucose Monitoring sensor was inserted subcutaneously into each subject.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Mean Area Under the Curve for Rise in Breakfast Post-prandial.
Time Frame: Mean area under the curve was calculated at 0, 15min, 30 min, 45 min, 60min, 75 min, 90 min, 105 min, 120min, 135min, 150min, 165min and 180 min after breakfast
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Arterialized blood glucose was monitored at 15 minute intervals and sensed glucose was recorded at five minute intervals.
Mean area under the curve was calculated over the 3 hour period after breakfast for both the high and low glycemic breakfast meals.
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Mean area under the curve was calculated at 0, 15min, 30 min, 45 min, 60min, 75 min, 90 min, 105 min, 120min, 135min, 150min, 165min and 180 min after breakfast
|
Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Principal Investigator: W K Ward, MD, Legacy Health System
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- kw01
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