Journal of Nutritional Sciences and Dietetics 2016. 2(5):.

Concurrent Associations between Sleep Duration and Screen Time with Childhood Obesity
Azimeh Izadi, Reza Daryabeygi-Khotbesara, Fereshteh Aliasghari, Kourosh Djafarian

Abstract


Objectives: Obesity is a multifactorial condition facing rapid rise worldwide, especially in children and adolescents. The present study aims to investigate the impact of sleep duration, TV watching and dietary intakes on the risk of childhood obesity.

Design, Setting, Subjects: A cross-sectional study was undertaken among 270 primary school children in Tehran, Iran. Sleep duration was measured by ACTi Graph device worn on the wrist. Using a questionnaire completed by parents, screen viewing time (TV, video games, etc.) was estimated. Also, weight, height and body mass index (BMI) were obtained. Data were analyzed by SPSS software (version 18: IBM corporation).

Results: Findings revealed that lower body mass index (BMI) and longer sleep duration is associated with low screen time (p<0.01). Higher daily mean energy consumption (1673.4±405.3 Kcal), total fat (55.3±19.3 g), carbohydrate (238.5±67.1 g), sugars (114.3±34.9 g), snacks (37.4±19.3 g) and lower daily intakes of fiber (7.9±3.7 g) as well as vegetables and fruits (2.6±1.3 servings) was significantly related to screen time in children (p<0.05). Lower fiber (8.1±4.2 g) as well as fruits & vegetable (2.6±1.4 servings) consumption were related to more sleep duration (≥540 min/day) (p<0.01).

Conclusion:  Screen time was a more important factor associated with BMI, diet and sleep in Iranian school children. Further studies are required to elaborate these associations. 


Keywords


Sleep; Diet; Sugar intake; Children; Overweight; Television

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