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Use of glycaemic index knowledge to improve postprandial glycaemia in paediatric patients on insulin pump therapy - what proportion of the meal needs to be low glycaemic index for benefit to glycaemic outcome

The effect of varying glycaemic index (GI) content on Continuous Glucose Monitoring System (CGMS) measured postprandial glycaemic outcomes in children and adolescents with type 1 diabetes using insulin pump therapy

Status
Completed
Phases
Unknown
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12608000452392
Enrollment
36
Registered
2008-09-15
Start date
2009-05-18
Completion date
2012-02-01
Last updated
2020-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

It is hypothesised that consideration of glycaemic index (GI) knowledge and the deliberate use of GI foods to modify low/high GI meals will improve post-prandial glycaemia in patients on insulin pump therapy. Aims: To investigate the effectiveness of clinical dietary advice regarding use of GI knowledge to improve PPG in pediatric patients with T1DM on insulin pump therapy; 1. To assess the clinical effectiveness of the dietary advice regarding the addition of a low GI food to a high GI meal to determine what proportion of the meal needs to contain low GI carbohydrates to improve postprandial glycaemic outcome.

Interventions

use of varying proportions of low glycaemic index food intakes to determine what proportion of the meal needs to be low GI for benefit to glycaemic outcome using CGMS measured blood glucose response and standard bolus dose feature on insulin pump. The criteria for varying glycaemic index intake was based on 25%, 50%, 75% and 100% of the carbohydrate food choices within the meal being low GI in content. An individual test meal is given for breakfast each morning, fasted from the previous night. T

use of varying proportions of low glycaemic index food intakes to determine what proportion of the meal needs to be low GI for benefit to glycaemic outcome using CGMS measured blood glucose response and standard bolus dose feature on insulin pump. The criteria for varying glycaemic index intake was based on 25%, 50%, 75% and 100% of the carbohydrate food choices within the meal being low GI in content. An individual test meal is given for breakfast each morning, fasted from the previous night. The duration of the study is 5 half days within one week. Each subject acts as their own control when comparing the CGMS measured blood glucose response to the differing test meals.

Sponsors

Royal Children's Hospital
Lead SponsorHospital

Study design

Allocation
Randomised controlled trial
Intervention model
Crossover
Primary purpose
Treatment
Masking
Open (masking not used)

Eligibility

Sex/Gender
All
Age
8 Years to 18 Years
Healthy volunteers
No

Inclusion criteria

diagnosed type 1 diabetes > 1 year, established use of insulin pump therapy > 3 months, HbA1c < 8.6%

Exclusion criteria

non-english speaking families, diagnosed eating disorder, concomitant dietary restriction, use of other medication affecting blood glucose levels, presence of diabetes-related complications

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026