Preprint Article Version 1 This version is not peer-reviewed

The Associations between Screen Time and Sleep Duration, and Body Mass Index (BMI) in under Five-Year-Old Children

Version 1 : Received: 28 May 2018 / Approved: 31 May 2018 / Online: 31 May 2018 (16:34:38 CEST)

How to cite: Sourtiji, H.; Rassafiani, M.; Hosseini, S.A.; Motlagh, M.E.; Noroozi, M. The Associations between Screen Time and Sleep Duration, and Body Mass Index (BMI) in under Five-Year-Old Children. Preprints 2018, 2018050482 (doi: 10.20944/preprints201805.0482.v1). Sourtiji, H.; Rassafiani, M.; Hosseini, S.A.; Motlagh, M.E.; Noroozi, M. The Associations between Screen Time and Sleep Duration, and Body Mass Index (BMI) in under Five-Year-Old Children. Preprints 2018, 2018050482 (doi: 10.20944/preprints201805.0482.v1).

Abstract

Today, due to recent developments in technology, children devote plenty of time for screen viewing. However, its harmful effects are not yet clear. The purpose of present study was to examine the associations among screen viewing and sleep duration, and body mass index (BMI) in under-five years old children. This cross-sectional study was conducted with 322 under-five healthy children that were selected using multistage stratified cluster sampling method in 2017. The data that were gathered by time-use diary method were analyzed using Kolmogorov-Smirnov test, Spearman correlation tests, multiple linear regression analysis, one-way ANCOVA, two-way ANCOVA. There was a negative correlation between screen time and sleep duration (rs = -0.42, p = 0.00), positive correlation between screen time and BMI (rs = 0.38, p = 0.00) and sleep duration negatively correlated with BMI (rs = -0.22, p = 0.00). screen viewing was a predictive factor for both sleep duration (β = -0.26, p = 0.00) and BMI (β = -0.26, p = 0.00). screen viewing had a significant impact on sleep duration (4, 314) = 5.02, P = 0.001) and BMI (F (4, 314) = 1.16, P=0.298). Results of this study indicated that screen viewing is related to sleep duration and BMI in under-five children. furthermore, screen time has an impact on sleep duration and BMI scores of children. findings of our study suggest that sleep duration negatively is associated with BMI in under-five-year-old children.

Subject Areas

screen time; sleep duration; body mass index (BMI); time use

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