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Published on: June 13, 2025
Association between sleep stages and hunger scores in 36 children
Insights
Children with later bedtimes experience increased hunger due to more Rapid Eye Movement (REM) sleep and less Slow Wave Sleep (SWS). This sleep pattern may influence childhood obesity.
Area of Science:
- Pediatric Sleep Medicine
- Childhood Obesity Research
- Sleep Physiology and Metabolism
Background:
- Childhood obesity is a significant public health concern.
- Delayed sleep phases in children are linked to increased obesity risk, potentially due to altered caloric intake.
- Previous adult studies suggest a link between REM sleep and energy balance, a connection not yet established in children.
Purpose of the Study:
- To investigate the relationship between hunger scores and specific sleep physiology parameters in children.
- To explore how sleep stages, particularly REM sleep, correlate with hunger levels in a pediatric population.
Main Methods:
- The study included 36 children referred for polysomnography to assess suspected obstructive sleep apnea.
- Sleep stages, including REM and Slow Wave Sleep (SWS), were monitored during polysomnography.
- Hunger scores were measured using a visual analogue scale in children with a mean age of 9.6 years.
Main Results:
- Hunger scores showed a positive correlation with the percentage of total REM sleep and REM sleep duration.
- A negative correlation was observed between hunger scores and the percentage of Slow Wave Sleep (SWS).
- No significant correlations were found between hunger scores and age, sex, BMI, or other sleep parameters like total sleep time or sleep efficiency.
Conclusions:
- Findings suggest that later bedtimes, leading to a higher proportion of REM sleep and reduced SWS, may increase hunger levels in children.
- This altered sleep architecture could be a contributing factor to increased caloric intake and obesity risk in children with delayed sleep phases.
Background:
Childhood obesity is a growing health challenge. Recent studies show that children with late bedtime and late awakening are more obese independent of total sleep time. In adolescents and adults, a delayed sleep phase has been associated with higher caloric intake. Furthermore, an adult study showed a positive correlation between REM sleep and energy balance. This relationship has not been demonstrated in children. However, it may be important as a delayed sleep phase would increase the proportion of REM sleep.
Objectives:
This study investigated the relationship between hunger score and sleep physiology in a paediatric population.
Methods:
Thirty-six patients referred for a polysomnogram for suspected obstructive sleep apnoea were enrolled in the study. Sleep stages were recorded as part of the polysomnogram. Hunger scores were obtained using a visual analogue scale. Mean age was 9.6 ± 3.5 years.
Results:
Mean hunger scores were 2.07 ± 2.78. Hunger scores were positively correlated with percentage of total rapid eye movement (REM) sleep (r = 0.438, P < 0.01) and REM sleep duration in minutes (r = 0.471, P < 0.05). Percentage slow wave sleep (SWS) was negatively correlated with hunger score (r = -0.360, P < 0.05). There were no correlations between age, sex, body mass index percentiles, apnoea-hypopnoea index, total sleep time, sleep efficiency, sleep onset latency, stage 2 sleep duration and hunger scores.
Conclusions:
These findings suggest that delayed bedtime, which increases the proportion of REM sleep and decreases the proportion of SWS, results in higher hunger levels in children.
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