Time-restricted Eating and Interval Training With Digital Follow-up

Effects of Time-restricted Eating and Interval Training With Digital Follow-up: A Randomized Controlled Trial

This study will investigate the effects of seven weeks of time-restricted eating combined with high-intensity interval training compared with a control group on body composition in adults with overweight/obesity. Participants in the intervention group will complete the intervention remotely and will receive weekly follow-up through online platforms (telephone, video call). Before and after the intervention, the investigators will measure the participants' body composition, physical fitness, fasting blood glucose and insulin, blood lipids, and blood pressure. Physical activity, diet, sleep quality, appetite, and adherence to the intervention will also be measured. Secondary sub-analyses of sex differences in the responses to the intervention will be performed.

Inclusion Criteria:

• Body mass index ≥ 27 kg/m²
• Able to walk or ride a bike > 60 min

Exclusion Criteria:

• On-going pregnancy
• Lactation within 24 weeks of study commencement
• High-intensity exercise ≥ 1/week
• Habitual eating window ≤12 hours/day
• Taking hypertension, glucose-, or lipid-lowering drugs
• Body mass variation ≥ 4 kg three months prior to study commencement
• Known diabetes mellitus (type 1 or 2) or cardiovascular disease
• Working night shifts