Comparison of Two Different Insulin Dose Calculation Algorithms in Type 1 Diabetes

NCT ID: NCT04131049

Last Updated: 2021-02-09

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

15 participants

Study Classification

INTERVENTIONAL

Study Start Date

2019-06-24

Study Completion Date

2020-01-24

Brief Summary

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The aim of this study is to compare the impact of carbohydrate counting (CC) method which is standard insulin dose calculation algorithm and food insulin index (FII) method which is a new algorithm on postprandial glucose following a high fat and a high protein meal in adolescent with type 1 diabetes. A randomized, single-blind and crossover trial included 14 adolescents aged 14-18 years with type 1 diabetes. All participants were sent to their homes for 4 consecutive days with a different glycemic index breakfast. The insulin doses of the meals were calculated according to CC and FII methods. Test breakfasts with different GIs and insulin requirements calculated with different algorithms are as follows: High GI calculated by CC (CHGI), low GI calculated by CC (CLGI), high GI calculated by FII (FHGI) and low GI calculated by FII (FLGI).

Detailed Description

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Conditions

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Insulin-Dependent Diabetes Mellitus 1

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

SCREENING

Blinding Strategy

SINGLE

Participants

Study Groups

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Carbohydrate Counting

The insulin doses of the breakfasts were calculated according to carbohydrate counting.

Group Type EXPERIMENTAL

High GI calculated by CC (CHGI)

Intervention Type OTHER

This test meal with high GI were served as a breakfast after 8-hours fasting and participants were asked to consume the meal in full, within 20 min.

Low GI calculated by CC (CLGI)

Intervention Type OTHER

This test meal with low GI were served as a breakfast after 8-hours fasting and participants were asked to consume the meal in full, within 20 min.

Food Insulin Index

The insulin doses of the breakfasts were calculated according to food insulin index.

Group Type EXPERIMENTAL

High GI calculated by FII (FHGI)

Intervention Type OTHER

This test meal with high GI were served as a breakfast after 8-hours fasting and participants were asked to consume the meal in full, within 20 min.

Low GI calculated by FII (FLGI)

Intervention Type OTHER

This test meal with low GI were served as a breakfast after 8-hours fasting and participants were asked to consume the meal in full, within 20 min.

Interventions

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High GI calculated by CC (CHGI)

This test meal with high GI were served as a breakfast after 8-hours fasting and participants were asked to consume the meal in full, within 20 min.

Intervention Type OTHER

Low GI calculated by CC (CLGI)

This test meal with low GI were served as a breakfast after 8-hours fasting and participants were asked to consume the meal in full, within 20 min.

Intervention Type OTHER

High GI calculated by FII (FHGI)

This test meal with high GI were served as a breakfast after 8-hours fasting and participants were asked to consume the meal in full, within 20 min.

Intervention Type OTHER

Low GI calculated by FII (FLGI)

This test meal with low GI were served as a breakfast after 8-hours fasting and participants were asked to consume the meal in full, within 20 min.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Aged between 14-18 years adolescents
* Type 1 diabetes diagnosed for at least one year
* Performing self-monitoring of blood glucose and doses of insulin at least four times daily
* HbA1c ≤ 9.6% for the last three months
* Negative fasting C-peptide (\<0.1 nmol/L)
* Total daily insulin use of ≥ 0.5 U/kg
* World Health Organization BMI/age z-score of -1 to below 3

Exclusion Criteria

* Complications of diabetes or other medical conditions including celiac disease
* Treatment with oral hypoglycaemic agents
* Food allergies, intolerances, or eating disorder
* Intestinal malabsorptions
* Delayed gastric emptying
* Viral or bacterial infection
* Physical or mental disability
* Clinical condition related to impaired digestive system such as cystic fibrosis
Minimum Eligible Age

14 Years

Maximum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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TC Erciyes University

OTHER

Sponsor Role lead

Responsible Party

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Zeynep Caferoglu, PhD

Assistant Professor Doctor

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Erciyes University Faculty of Health Sciences

Kayseri, , Turkey (Türkiye)

Site Status

Countries

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Turkey (Türkiye)

References

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Erdal B, Caferoglu Z, Hatipoglu N. The comparison of two mealtime insulin dosing algorithms for high and low glycaemic index meals in adolescents with type 1 diabetes. Diabet Med. 2021 Mar;38(3):e14444. doi: 10.1111/dme.14444. Epub 2020 Dec 20.

Reference Type DERIVED
PMID: 33119135 (View on PubMed)

Provided Documents

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Document Type: Study Protocol and Statistical Analysis Plan

View Document

Other Identifiers

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8811

Identifier Type: -

Identifier Source: org_study_id

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