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Clinical Trial Summary

This study aims to demonstrate the effectiveness of increased protein ingestion, particularly when coupled with a low glycaemic index (GI) to reduce biomarkers related to high risk of diabetes.


Clinical Trial Description

A randomized cross-over study and subjects will be randomized to take either the high GI or low GI meal. The sequence of the meal will be generated using an online randomiser generator.During screening administer informed consent.Measure height, weight, waist and hip circumference.Blood draw: Two fingerpricks, 5 minutes apart. 1 X 10ml red tube top to prepare serum. Serum and red platelets into separate microtubes. Serum will be used to analyse fasting blood glucose, lipid profile, C-Reactive Protein (CPR), insulin and apolipoprotein. Red platelets will be stored separately for DNA genotyping. During the study visits,On Day 1, subjects will come to the Centre at around 4:00 pm to have the continuous glucose monitoring (CGMS) system inserted. CGMS will be used to measure 24 hour blood glucose concentrations. The sensor records interstitial blood glucose concentrations every five minutes. This will involve the insertion of a small sensor under the skin in the abdomen, which will be carried out by using a device that produces minimal pain and discomfort.Subjects will have to wait in the laboratory for one hour after insertion for the sensor to be stabilized. After one hour the inserted CGMS sensor will be calibrated against a manual finger-prick blood glucose sample.Manual calibration using finger-prick blood samples will need to be carried out before every meal and before bed in the night. The calibrations before dinner and bed will have to be carried out by the subjects at home.Therefore, the subjects will be provided with a finger-prick blood glucose test kit to take home and instructed on how to correctly use it and measure blood glucose values. Subjects will then consume the standardised dinner at around 7pm.Subjects will be asked to fast overnight and instructed to avoid eating or drinking anything, except water, after 10pm. Subjects will arrived between 8.00am and 8.30am the following morning. Baseline blood samples will be collected. A venous cannula will be inserted and a fasting blood sample collected. Baseline basal metabolic rate will be measured using hood-ventilated indirect calorimetry for 30mins during fasting. Subjects will then consume the test meal. Further venous blood samples will be collected at regular intervals for up to 4hours postprandial. After meal, subjects will enter the hood-ventilated indirect calorimetry and measure post-prandial respiratory quotient for 4 hours. A medium GI lunch will then be provided and the subject can either stay in the centre or return to the centre 4 hours after lunch to remove the CGMS. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT03309254
Study type Interventional
Source Clinical Nutrition Research Centre, Singapore
Contact
Status Completed
Phase N/A
Start date January 18, 2016
Completion date March 23, 2018

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