Impact of Morning vs Evening Bodyweight High-Intensity Exercise on Eating Habits and Physical Activity in Adults with Low Activity Levels

What This Trial Is About

This research aims to investigate how the timing of high-intensity bodyweight exercise affects eating behavior, physical activity, and sedentary behavior over 72 hours in adults who are physically inactive. The study focuses on adults aged 20 to 50 years with low physical activity levels and stable body weight, without cardiovascular or metabolic diseases. Researchers seek to understand how exercising in the morning versus the evening influences these behaviors and energy balance. Participants will take part in two exercise trials separated by at least one week one with exercise in the morning between 800 and 1100 AM, and the other with exercise in the evening between 600 and 900 PM. Each exercise session includes high-intensity bodyweight exercises consisting of three sets of eight exercises, each lasting 30 seconds with 30 seconds rest. Heart rate and perceived exertion will be monitored throughout the 45-minute exercise sessions. Before and after the exercise sessions, participants will wear pedometers and accelerometers to measure physical activity and sedentary time, keep food diaries to record energy intake, and complete appetite questionnaires. Data will be collected continuously from two days before to two days after each exercise session. Researchers will assess physical activity, energy intake, and sedentary behavior over 72 hours relative to the exercise day. Participants will also undergo eligibility screening and familiarize themselves with the exercise and monitoring devices before the main trials.

Effects of Different Timing of Bodyweight High-intensity Exercise on Human Behaviours