ESPE Abstracts (2018) 89 P-P2-152

aDepartment of Child Health and Diseases, Ankara University Faculty of Medicine, Ankara, Turkey; bAnkara University Faculty of Medicine, Ankara, Turkey; cDepartment of Biostatistics, Ankara University Faculty of Medicine, Ankara, Turkey; dDepartment of Child Health and Diseases, Department of Pediatric Cardiology, Ankara University Faculty of Medicine, Ankara, Turkey; eDepartment of Child Health and Diseases, Department of Pediatric Endocrinology, Ankara University Faculty of Medicine, Ankara, Turkey

Objective: Several studies have shown that sleep plays an important role as a modulator of metabolic homeostasis. Indeed, hundreds of studies have been published to examine the relationship between insufficient sleep, late bedtime and obesity. We have studied bedtime snack as another parameter. We suggested that it may be a risk factor for obesity. When we looked at the literature, we could not find any study about bedtime snack in childhood, but there are a few studies in adults. In this study, we aimed to determine the relationship between obesity and late sleeping time and increased bedtime snack due to that.

Methods: Our study was prospectively conducted between July 2017–November 2017 by enrollment of children, aged 6–18 years, who admitted to the pediatric primary care clinic of Ankara University School of Medicine. Children with any chronic disease or a history of drug use which increases the risk of obesity were excluded. Anthropometric values were recorded. Approximate bedtime and bedtime snack habits of each child were questioned. Data were evaluated by appropriate statistical methods.

Results: The mean age of 1949 cases in our study was 11.1±3.8 years. Of the cases, 57.6% were female, 42.4% were male. We found that 12.5% of our cases were overweight and 17.9% were obese. We found that 32.5% of the cases were have bedtime snack. The obesity rate was 16.2% in those who did not eat before going to bed, whereas the obesity rate was 21.5% in those who had eaten before going to sleep. We found a significant relationship between bedtime snack and obesity (P<0.001). In our study, it was observed that 70.8% of cases were sleeping after 2200 h at night.Obesity was found to be 14.9% in those who slept before 2200 h, while it was 19.2% in late sleepers with bed time snack. There was no significant difference in obesity between late sleepers and the other group(P:0.82). Obesity frequency were higher among late sleepers who had bedtime snack.

Conclusion: Our study represents as the first study to evaluate the relation between childhood obesity and bedtime snack habit. We observed higher risk of obesity in children who slept late in addition to having bedtime snack. This should be accepted as a dramatic consequence of irregular eating habits of today’s life. We believe that increasing number of well-designed preventive studies on this issue should be conducted in the future.

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