An interventional study of Morning exercise and Evening exercise in Physical Activity, Energy Intake and Sedentary Behavior, sponsored by National Taiwan Normal University. Recruiting at 1 site in Taiwan. Open to participants aged 20 Years to 50 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2025-05-11.
Sponsored by National Taiwan Normal University · Not applicable, Interventional, and Basic science
The purpose of this project is to investigate the effects of exercise at different times of day on 72-hour eating behaviour, physical activity and sedentary behaviour in physically inactive adults.
Eligibility and Consent Confirmation:
Prior to the one-week preliminary test, participants will undergo eligibility screening, including measurements of height, weight, and body composition. After the researchers will provide a detailed explanation of the experimental procedures, participants can decide whether to participate in the study. Eligible participants will complete a set of high-intensity bodyweight exercise to familiarize themselves with the exercise. Subsequently, the researchers will explain the use of pedometers and distributed dietary record forms.
During a one-week preliminary test, participants will be instructed to record their physical activity levels measured in steps, sleep duration including wake-up and sleep times, and dietary behaviours through photographs taken (2 weekdays and 1 weekend day) over a period of 7 consecutive days. Participants will be allowed to take part in this study, once they meet the inclusion criteria: 1) an average daily step count of less than 7,500 over the course of the week and 2) a wake-up time no later than 11:00 AM).
Exercise intervention:
Two main trials will be separated by at least one week - exercise in the morning (08:00 to 11:00 AM) or exercise in the evening (18:00 to 21:00 PM).
In both trials, participants will complete the first Visual Analogue Scale (VAS) for subjective appetite upon waking, wear a pedometer and an accelerometer, and record energy intake and physical activity over a 3-day period (the day before exercise intervention, the exercise day and the day after exercise intervention). Upon arrival at the laboratory, participants will complete the second VAS, followed by a 15-minute waiting period before commencing the exercise. Participants will perform high-intensity bodyweight exercise (3 sets with 8 exercises with a cycle of 30 seconds exercise and 30 seconds rest), followed by a 15-minute rest period, after which they will complete the third VAS.
Heart rate and Rating of Perceived Exertion (RPE) will be measured regularly during exercise. Energy balance (e.g., energy intake and spontaneous physical activity) will be assessed using a food diary, Actigraph wGT3x-BT accelerometer (Actigraph Co., Ltd., Pensacola, FL, USA), and pedometer (Realalt, Goldhat Ltd., UK), which will be worn starting from the night two days before the experiment and removed after waking up two days post-experiment.
1,273 studies on the registry are indexed under Sedentary Behavior; 300 are open to participants now.
This study's planned enrollment of 20 is below the median of 60 across 1,076 interventional studies indexed under Sedentary Behavior.
Browse Sedentary Behavior studies →National Taiwan Normal University is the lead sponsor of 64 studies on the registry; 15 are open to participants now.
Compared within Sedentary Behavior, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Motor Activity. The counts are of registry records indexed under each term, refreshed daily. How we classify →
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
BMI (body mass index)
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Participants performed bodyweight exercise in the morning between 08:00 to 11:00 AM.
Behavioral: Morning exercise
Participants performed bodyweight exercise in the morning between 18:00 to 21:00 PM.
Behavioral: Evening exercise
Participants performed bodyweight exercise in the morning between 08:00 to 11:00 AM.
Participants performed bodyweight exercise in the morning between 18:00 to 21:00 PM.
Physical activity
Changes in physical activity intensity (minutes and percentage during 72 hours) and levels (minutes and percentage during 72 hours) between trials
Time frame: 72 hours (24 hours before exercise day, exercise day and 24 hours after exercise day)
Energy intake
Changes in total and macronutrient energy intake between trials
Time frame: 72 hours (24 hours before exercise day, 24 hours during exercise day and 24 hours after exercise day)
Sedentary behaviour
Changes in sedentary behaviour (minutes and percentage during 72 hours) between trials
Time frame: 72 hours (24 hours before exercise day, exercise day and 24 hours after exercise day)
Heart Rate
Changes in heart rate (bmp) during exercise between trials
Time frame: During 45 minutes exercise
Rating of Perceived Exertion (RPE)
Changes in Rating of Perceived Exertion using Borg 6-20 scale (6 indicates no exertion and 20 indicates maximal effort) during exercise between trials
Time frame: During 45 minutes exercise
Visual analogue scale (VAS)
Changes in Visual analogue scale (Mood and appetite) using 0-100 mm scale (0 indicates not at all and 100 indicates very much) during exercise between trials
Time frame: Baseline upon wake up, 15 minutes before exercise and 15 minutes after exercise
Started Apr 2025 (actual). Primary completion is estimated for Apr 2026, 11 months after the start.
Of 733 non-industry interventional studies with no phase under Sedentary Behavior, half reached primary completion within 14 months of starting (the median), counting those still running; a quarter within 6 and three quarters within 31. This study's planned 11 months is below that.
Counting every sponsor, half of 741 studies reached it within 14 months; a quarter within 6 and three quarters within 31.
How these figures are worked out, and which studies are left out of them.
Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.
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National Taiwan Normal University