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Independent effects of the human circadian system and sleep/eating cycles on caloric intake in adolescents vary by weight status
How the body’s internal clock and sleep/eating patterns separately relate to calorie intake in teens with different weight levels
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Abstract
The endogenous circadian rhythm in caloric intake shows a peak-to-trough difference of 196 kcal per meal.
- Both the and the behavioral sleep/wake cycle influence caloric intake patterns.
- Caloric intake decreases during the waking period and increases from circadian morning to evening.
- Participants with overweight or obesity consumed more calories later in the day compared to those with healthy weight.
- Those with overweight or obesity exhibited blunted fluctuations in caloric intake compared to individuals with healthy weight.
- These findings may help clarify the reasons behind increased evening caloric consumption, particularly in those at risk for obesity.
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Key numbers
196 kcal/meal
Circadian Peak-to-Trough Difference in Caloric Intake
Difference between caloric intake at peak and trough times.
13°
Caloric Intake Timing Difference
Difference in circadian phase for caloric intake timing.
23%
Circadian Amplitude Reduction
Reduction in peak-to-trough amplitude compared to healthy weight group.