Investigating how the timing of high-intensity exercise affects eating and activity behaviors
Effects of Bodyweight High-intensity Exercise at Different Times of Day on 72-hour Eating Behaviours and Physical Activity in Physically Inactive Adults
This study is testing how exercising at different times of the day affects the eating and activity habits of people who don’t usually exercise.
Quick facts
| Phase | Not applicable |
|---|---|
| Study type | Interventional |
| Enrollment | 20 (estimated) |
| Ages | 20 Years to 50 Years |
| Sex | All |
| Sponsor | National Taiwan Normal University Academic / other |
| Locations | 1 site (Taipei) |
| Trial ID | NCT06966414 on ClinicalTrials.gov |
What this trial studies
This project aims to explore the impact of exercising at different times of the day on the eating behaviors, physical activity levels, and sedentary habits of physically inactive adults. Participants will undergo a preliminary screening and then engage in high-intensity bodyweight exercises either in the morning or evening, with their physical activity and dietary intake monitored over a three-day period. The study will assess how these different exercise timings influence overall behavior and energy intake.
Who should consider this trial
Good fit: Ideal candidates are physically inactive adults aged 20 to 50 with a BMI between 19 and 27 kg/m².
Not a fit: Patients with cardiovascular or metabolic diseases, pregnant individuals, or those on specific dietary interventions may not benefit from this study.
Why it matters
Potential benefit: If successful, this study could help optimize exercise timing to improve dietary habits and physical activity levels in inactive adults.
How similar studies have performed: While there is some existing research on exercise timing, this specific approach focusing on high-intensity bodyweight exercises and their effects on behavior is relatively novel.
Eligibility criteria
Show full inclusion / exclusion criteria
Inclusion Criteria: * Aged between 20 and 50 years, with a BMI ranging from 19 to 27 kg/m². * Classified as having "low" physical activity levels (750 Metabolic Equivalents / week) according to the International Physical Activity Questionnaire (IPAQ). * Engaged in moderate-intensity exercise for no more than 3 days per week and less than 30 minutes per session in the 3 months preceding the study. * Maintained a stable body weight (± 3 kg) during the 3 months prior to the main experiment. * Not taking any medications, supplements, or vitamins that might affect food intake, appetite, physical activity, weight loss, or metabolism. * Free from cardiovascular and metabolic diseases. * Not pregnant or planning to become pregnant. * Not currently on a diet or undergoing any specific dietary interventions (e.g., intermittent fasting, ketogenic diet). * No injuries or surgical wounds preventing physical activity. * Regular sleep patterns, averaging 7-9 hours per night, with no shift work. * No habits of heavy alcohol consumption or smoking. Exclusion Criteria: * Personal history of/existing diabetes, cardiovascular disease, metabolic disease or dyslipidaemia. * Taking medications that may influence lipid or carbohydrate metabolism or immune system function. * Unable to take part in exercise for any reason (e.g., injury or disability) or a positive response to any questions on the Physical Activity Readiness questionnaire (PAR-Q).
Where this trial is running
Taipei
- National Taiwan Normal University — Taipei, Taiwan (Recruiting)
Study contacts
- Study coordinator: Yung-Chih Chen, PhD
- Email: yc.chen@ntnu.edu.tw
How to participate
- Review the eligibility criteria above with your treating physician.
- Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
- Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.