Investigating how the timing of high-intensity exercise affects eating and activity behaviors

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

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.

Why it matters

Who can join: the full rules

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 it's running

• National Taiwan Normal University
  Taipei, Taiwan Recruiting

Study contacts

• Study coordinator: Yung-Chih Chen, PhD
• Email: yc.chen@ntnu.edu.tw

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How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.