None listed
Conditions
Brief summary
This study aims to investigate the efficacy of a low glycemic index diet (GI) in reducing the prevalence of large-for-gestion-age (LGA) babies amongst gravidas with gestational diabetes (GDM). Study participants will be pregnant women diagnosed with GDM at ~26-30 week gestation. They will be randomized into two study groups, one receiving dietary education on how to follow a wholegrain high fibre diet for GDM, whereas the other group will receive education on how to follow a macronutrient and energy matched low GI diet. We hypothesize, based on our previous pilot study on healthy gravidas, gravidas with GDM following a low GI diet will have a lower risk of giving birth to LGA infant than those following a wholegrain high fibre diet. The size of the infants (as birth weight z-score) will be measured as the primary outcome.
Interventions
Low glycemic index diet - with a daily dietary GI less than 50, carbohydrate choices include low/lower GI alternatives, e.g. pasta, lower GI rice, multigrain bread, low GI breakfast cereals, sweet potatoes, etc. from diagnosis of gestational diabetes (at 26 - 30 weeks) till 36 weeks of gestation.
Participants in this diet group would receive 1 dietary education session fortnightly for at least 5 weeks to educate them how to follow a low GI diet. Phone reviews will be conducted in between the fac
Low glycemic index diet - with a daily dietary GI less than 50, carbohydrate choices include low/lower GI alternatives, e.g. pasta, lower GI rice, multigrain bread, low GI breakfast cereals, sweet potatoes, etc. from diagnosis of gestational diabetes (at 26 - 30 weeks) till 36 weeks of gestation. Participants in this diet group would receive 1 dietary education session fortnightly for at least 5 weeks to educate them how to follow a low GI diet. Phone reviews will be conducted in between the face-to-face sessions. The sessions will be given by the PhD student who is also an Accredited Practising Dietitian. Low/lower GI food samples baskets will be provided to the participants on a fortnightly basis, and a range of low/lower GI foods would be suggested and encouraged during the education sessions. Participants will be provided sample meal plans which are specially formulated to have a GI less than 50, and a 24 hour recall at the 2nd face-to-face dietary education session would assess their compliance.
Sponsors
The University of Sydney
Study design
Allocation
Randomised controlled trial
Intervention model
Parallel
Primary purpose
Treatment
Masking
Blinded (masking used)
Eligibility
Sex/Gender
All
Age
18 Years to 45 Years
Healthy volunteers
No
Inclusion criteria
otherwise healthy pregnancy, singleton gestation
Exclusion criteria
Pregnancy achieved via assited reproduction, pregnancy complicated with conditions other than gestational diabetes
Outcome results
None listed