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Trial registered on ANZCTR
Registration number
ACTRN12613000215729
Ethics application status
Not yet submitted
Date submitted
22/02/2013
Date registered
25/02/2013
Date last updated
25/02/2013
Type of registration
Prospectively registered
Titles & IDs
Public title
How does the protein content in meals influence post prandial bood glucose levels in individuals with type 1 diabetes mellitus?
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Scientific title
For people with type 1 diabetes mellitus, does the post prandial blood glucose level significantly alter following a meal containing protein versus a meal without protein?
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Secondary ID [1]
281994
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Nil
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Universal Trial Number (UTN)
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Type 1 diabetes mellitus
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Condition category
Condition code
Metabolic and Endocrine
288790
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0
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Diabetes
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Intervention/exposure
Study type
Observational
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Patient registry
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Target follow-up duration
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Target follow-up type
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Description of intervention(s) / exposure
The study duration will be 5 days. On day one, the participant will be connected to a continuous blood glucose monitor sensor (CGMS), which will remain in place for the 5 day duration of the study. The CGM sensor is a small plastic catheter inserted just beneath the skin. For 5 consecutive days the participant will be instructed to eat a standard evening meal with consistent amounts and type of carbohydrate. Usual insulin doses will be given prior to the meal for the carbohydrate content. This will be followed by a test meal (a protein drink) to be consumed 4 hours later. The participant will then fast overnight. The blood glucose level (BGL) will be observed via the CGM every hour for an 8 hour period (overnight). The participant will then test their BGL each morning of the study prior to breakfast with a fingerprick blood test, as per usual diabetes management for individuals with type 1 diabetes mellitus.
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Intervention code [1]
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Not applicable
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Comparator / control treatment
The participants postprandial blood glucose level will be compared 8 hours following a meal containing protein with the postparandial BGL following a non protein meal.
The first day of the study period the participant will not cosume a protein meal. Each day for the following 4 days they will be given a test meal containing various amounts of protein.
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Control group
Uncontrolled
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Outcomes
Primary outcome [1]
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The primary outcome will be measured using the data from the CGM trace.
The primary outcome will be the glucose excursion at 8 hours after the test meal of protein.
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Assessment method [1]
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Timepoint [1]
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8 hours after the test meal is consumed
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Secondary outcome [1]
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The rate of maximal BGL increase every hour up to 8 hours post prandial.
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Assessment method [1]
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Timepoint [1]
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8 hours after the test meal is consumed
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Secondary outcome [2]
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The time it takes for the BGL to reach maximum excursion as measured by the CGM
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Assessment method [2]
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Timepoint [2]
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Up to 8 hours following the test meal
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Eligibility
Key inclusion criteria
Type 1 diabetes mellitus
HbA1c <8.5%
BMI < 91st centile
No other medical conditions
Diabetes for > 6 months
Using multiple daily injections or insulin pump therapy
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Minimum age
7
Years
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Maximum age
40
Years
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Sex
Both males and females
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Can healthy volunteers participate?
No
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Key exclusion criteria
HbA1c >8.5%
BMI > 91st centile
Other co-exisiting medical conditions
Complications of diabetes
Onset of diabetes <6 months
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Study design
Purpose
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Duration
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Selection
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Timing
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Statistical methods / analysis
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Recruitment
Recruitment status
Not yet recruiting
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Date of first participant enrolment
Anticipated
3/06/2013
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Actual
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Date of last participant enrolment
Anticipated
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Actual
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Date of last data collection
Anticipated
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Actual
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Sample size
Target
31
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Accrual to date
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Final
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Recruitment in Australia
Recruitment state(s)
NSW
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Funding & Sponsors
Funding source category [1]
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Commercial sector/Industry
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Name [1]
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Novo Nordisk Pharmaceuticals
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Address [1]
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Level 3, 21 Solent Circuit
Baulkham Hills
NSW 2153
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Country [1]
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Australia
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Primary sponsor type
Commercial sector/Industry
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Name
Novo Nordisk pharmaceuticals
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Address
Level 3, 21 Solent Circuit
Baulkham Hills
NSW 2153
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Country
Australia
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Secondary sponsor category [1]
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None
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Name [1]
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Address [1]
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Country [1]
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Ethics approval
Ethics application status
Not yet submitted
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Ethics committee name [1]
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John Hunter Hospital
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Ethics committee address [1]
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Lookout Rd New Lambton NSW 2310
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Ethics committee country [1]
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Australia
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Date submitted for ethics approval [1]
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28/02/2013
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Approval date [1]
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Ethics approval number [1]
288848
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Summary
Brief summary
To properly manage type 1 diabetes, individuals are required to measure blood glucose levels (BGL's)regularly and adjust the amount of insulin to be given accordingly. This has been done by matching the amount of insulin with the amount of carbohydrate in a meal. Recent studies have shown that meals high in protein can also significantly increase the BGL. There are recommendations that additional insulin be given with meals containing high levels of protein to prevent post prandial hypergycaemia (elevated BGL's after a meal). However, at this time there is insufficient data to determine how these additional insulin doses should be calculated. A current algorithm used to calculate additional insulin based on protein content in a meal has been shown to cause unacceptable levels of hypoglycaemia. We will recruit 31 people with type 1 diabetes between the ages of 7 and 40 years diagnosed for more than 1 year, using either insulin pump therapy or multiple daily injection therapy. Participants will have a glycated haemaglobin of <8.5% and body mass index <91st centile. Exclusion criteria will be those with co-existing medical conditions. The aim of this study will be to: Define the impact of variable protein loads on post prandial BGL's up to 8 hours. The participants will be contacted daily for the first week to monitor BGL's and adjust insulin doses. A continuous glucose monitoring system (CGMS) which provides continuous measurement of BGL's will be inserted on the first day. For 5 consecutive days participants will be instructed to eat a standardised evening meal containing consistent quantities and type of carbohydrate. The participant will give a standard insulin bolus for the carbohydrate in the meal. They will then be instructed to eat a test meal (protein shake) 4 hours after the evening meal. The participant will fast over night and check the BGL in the morning prior to eating breakfast. If the participant has has a BGL <3.5 mmols/L or has symptoms of hypoglycaemia at any time they will eat 15 grams of carbohydrate as per their usual management. During the test meal study days exercise and evening food will be standardised.
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Trial website
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Trial related presentations / publications
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Public notes
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Contacts
Principal investigator
Name
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A/Prof Bruce King
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Address
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John Hunter Children's Hospital
Department of Diabetes and Endocrinology
Lookout Rd
New Lambton
NSW 2310
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Country
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Australia
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Phone
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+61 024249855634
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Fax
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Email
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Bruce.
[email protected]
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Contact person for public queries
Name
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Bruce King
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Address
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John Hunter Children's Hospital
Department of Diabetes and Endocrinology
Lookout Rd
New Lambton
NSW 2310
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Country
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Australia
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Phone
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+61 024249855634
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Fax
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Email
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[email protected]
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Contact person for scientific queries
Name
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Bruce King
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Address
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John Hunter Children's Hospital
Department of Diabetes and Endocrinology
Lookout Rd
New Lambton
NSW 2310
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Country
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Australia
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Phone
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+61 024249855634
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Fax
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Email
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[email protected]
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No information has been provided regarding IPD availability
What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
Documents added manually
No documents have been uploaded by study researchers.
Documents added automatically
No additional documents have been identified.
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