Effect of the Exercise-meal Timing on Energy Intake and Appetite in Adolescents With Obesity

Effect of the Exercise-meal Timing on Energy Intake and Appetite in Adolescents With Obesity: the TIMEX 2 Study

The aim of the present study is to compare the effect of realizing an exercise right before or right after a meal of on energy intake, appetite feelings and food reward in adolescents with obesity.

The present study will compare the nutritional response to the realisation of an acute exercise right before or right after lunch in adolescents with obesity. 18 adolescents with obesity will be asked to randomly complete three experimental sessions: i) one control session (rest); ii) one session with an acute exercise realized right before lunch; iii) one session with an acute exercise realized right after lunch. Their ad libitum energy intake will be assessed during lunch as well as at dinner time. Appetite feelings will be assessed at regular intervals and their food reward in response to the lunch will also be assessed.

Inclusion Criteria:

• BMI percentile > 97th percentile according to the french curves.
• ages 12-16 years old
• Signed consent form
• being registered in the national social security system
• no contraindication to physical activity

Exclusion Criteria:

• Previous surgical interventions that is considered as non-compatible with the study.
• Diabetes
• weight loss during the last 6 months
• cardiovascular disease or risks