Prior to the test days, participants were asked to fast overnight following the standard procedure for fasting blood glucose measurement. Additionally, participants were asked to refrain from vigorous physical activity prior to the test days. On the test days, fasting blood glucose was taken prior to the breakfast test meal at 0 minute. Then, participants were asked to consume fibre jelly for those in the intervention group and carrageenan-based jelly for those in the control group. After consuming jelly, participants from both groups were asked to consume bread, which was equal to 50 grams of starch and 250 ml of water in 10 minutes. To measure their postprandial blood glucose levels, participants were required to fast for the next 2 hours. After blood samples were collected, participants were provided with a complete meal and unlimited water. Participants were allowed to eat and drink as much as they desire following their satiety and hunger cues (ad-libitum). The remaining foods were weighed to calculate the total calories consumed by participants.
