Control Session (CON), Exercise Condition (EX)
Conditions
Brief summary
Physical exercise has been shown to significantly reduce subsequent energy intake in obese adolescents but not in lean, without altering their appetite feelings. Although previous studies have pointed out the role of gastric peptides in this post exercise nutritional response, some recent work question the role of the neural system in the post exercise drive to eat. This study tends to explore whether or not an acute bout of exercise can affect the neural response to food cues in adolescents, obese or lean.
Detailed description
After a medical inclusion, the adolescents will have to realise a DXA to assess their body composition and a submaximal exercise to evaluate their aerobic capacities. They will have then to enter the laboratory on 2 different occasions in a randomized order from 8am to 330pm: At 8am they will receive a calibrated breakfast. then, at 1045; they will have to complete one of the experimental condition: 1) a cycling exercise or 2) remaining sitting fpr one hour. after the one hour sitting station or the exercise bout, they will be asked to complete a computer task while and electroencephalogram will be recorded. This computer task consists in visual recognition of rare pictures compared to frequent ones (oddball method). at 1215 they will be offered ad libitum meals. At regular intervals through the day, their appetite feelings will be assessed using Visual analogue scales. Ad libitum energy consumption will be assessed by investigators and recorded for each participants.
Interventions
None listed
Sponsors
Université Blaise Pascal, Clermont-Ferrand
Study design
Observational model
CASE_CROSSOVER
Time perspective
CROSS_SECTIONAL
Eligibility
Sex/Gender
MALE
Age
12 Years to 15 Years
Healthy volunteers
Yes
Inclusion criteria
* male * 12-15 years old * BMI defining obesity (Cole et al., 2000) * Not being under diet restriction * Information and consent forms have to be signed by the adolescent and his legal representative * being registered to the national social security system
Exclusion criteria
* Being under medication * contraindication to exercise * smokers * dieting
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Neural response to food cues | up to 2 months | The electroencephalogram signals amplitude in response to visual food cues will be the primary outcome, after the exercise (during the exercise condition) and after the sitting position (during the control session) |
Countries
France
Outcome results
None listed