The Study
Higher energy flux may improve short-term appetite control in adolescents with obesity: the NEXT study
This study showed that when teens with obesity exercised more and ate more, they felt less hungry and ate less at dinner — but only for one day. It doesn't prove that doing this every day will help them lose weight, just that it might help them feel fuller right after exercising.
Analysis score
Maximum 90 for a randomized controlled trial.
Where the score came from
When teens with obesity ate more food and exercised more at the same time, their bodies seemed to naturally want to eat less at dinner and felt less hungry.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 542 / 100
Quality score
Participants are randomly assigned to treatment or control groups, minimizing bias. The gold standard for testing whether an intervention causes an effect.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes — even though they ate more overall, they naturally ate less at meals and felt less hungry, which could help with weight management.
- 2They ate 12% less at dinner, felt 25–30% less hungry, ate 20–30% more carbs, and liked sweet foods more when they burned extra calories.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
British Journal of Nutrition
Year
2023
Authors
J. Siroux, B. Pereira, A. Fillon, H. Moore, Céline Dionnet, V. Julian, G. Finlayson, M. Duclos, Y. Boirie, L. Isacco, D. Thivel
Related Content
Claims (6)
When the body processes a large amount of energy from food and physical activity, it burns more calories at rest, breaks down more fat, and reduces feelings of hunger, regardless of whether total calorie intake exceeds or falls short of expenditure.
In adolescents with obesity, combining regular physical activity with a controlled increase in daily calorie intake leads to reduced food consumption at dinner and lower reported feelings of hunger and desire to eat throughout the day, compared to conditions with lower energy expenditure and intake.
In adolescents with obesity, increasing daily physical activity and food intake by 500 calories total leads to a 35% reduction in the amount of food eaten at dinner compared to when energy intake and expenditure are lower, suggesting better alignment between how much energy is used and how much is consumed.
In adolescents with obesity, consuming 500 more calories per day than needed leads to a 25–30% reduction in overall feelings of hunger and desire to eat throughout the day, compared to consuming fewer calories.
Among adolescents with obesity, consuming 500 extra calories per day above energy needs leads to a 20–30% increase in carbohydrate intake during dinner compared to when energy intake matches energy needs.
In adolescents with obesity, consuming significantly more calories than needed is associated with a measurable increase in preference for sweet foods, suggesting that higher energy intake may alter how the brain responds to rewarding foods.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.