Trial was planned for 2020, but Melbourne 2020 and 2021 lockdowns hindered the study.

Randomised crossover trial to compare early vs late walking on postprandial glycaemic response at night time.

In this crossover trial, eligible participants will be randomised to a 30-minute bout of physical activity (30 minute walk) either during the day or after an evening meal. The postprandial response to the evening meal will be analysed.

Inclusion criteria

• Men and Women aged 18 to 65 years of age
• Waist circumference of <94cm and <80cm for Caucasian males and females, respectively
• Waist circumference of <90cm and <80 cm for Asian males and females, respectively
• Willingness to provide written informed consent and willingness to participate and comply with the study

Exclusion criteria

• Current or recent treatment (within 6 months) with medications that influence blood glucose
• Fasting blood glucose ≥ 7 mmol/L
• Individuals diagnosed with type 1 or type 2 diabetes mellitus, chronic gastrointestinal disorders (including inflammatory bowel disease and celiac) or any other condition deemed unstable
• Serious health conditions that may affect participation e.g. liver or thyroid dysfunction, recent major surgery
• Not able to walk for 30 mins at 5-5.5 km/hr
• Women planning pregnancy, pregnant or lactating.

This is a single masking study.