Journal Article

Sleep duration and risk of obesity among a sample of Victorian school children

Millar, Lynne, Whelan, Jill, Swinburn, Boyd, Morrissey, Bridget, Strugnell, Claudia, Allender, Steven, Malakellis, Mary

2016

Overview

Background Insufficient sleep is potentially an important modifiable risk factor for obesity and poor physical activity and sedentary behaviours among children. However, inconsistencies across studies highlight the need for more objective measures. This paper examines the relationship between sleep duration and objectively measured physical activity, sedentary time and weight status, among a sample of Victorian Primary School children. Methods A sub-sample of 298 grades four (n = 157) and six (n = 132) Victorian primary school children (aged 9.2-13.2 years) with complete accelerometry and anthropometry data, from 39 schools, were taken from a pilot study of a larger state based cluster randomized control trial in 2013. Data comprised: researcher measured height and weight; accelerometry derived physical activity and sedentary time; and self-reported sleep duration and hypothesised confounding factors (e.g. age, gender and environmental factors). Results Compared with sufficient sleepers (67 %), those with insufficient sleep (<10 hrs/day) were significantly more likely to be overweight (OR 1.97, 95 % CI:1.11-3.48) or obese (OR 2.43, 95 % CI:1.26-4.71). No association between sleep and objectively measured physical activity levels or sedentary time was found. Conclusion The strong positive relationship between weight status and sleep deprivation merits further research though PA and sedentary time do not seem to be involved in the relationship. Strategies to improve sleep duration may help obesity prevention initiatives in the future.

• Publisher: BioMed Central,BioMed Central Ltd,Springer Nature B.V,BMC
• Subject: Accelerometers / Accelerometry / Adolescent / Anthropometry / Biostatistics / Body mass index / Body weight / Child / Children / Children & youth / Consent / Energy balance-related behaviors / Environmental factors / Environmental Health / Epidemiology / Exercise / Female / Gender / Girls / Health aspects / Humans / Male / Medicine / Medicine & Public Health / Obesity / Obesity in children / Overweight / Overweight - epidemiology / Pediatric Obesity - epidemiology / Physical activity / Pilot Projects / Public Health / Research Article / Risk / Risk analysis / Risk Factors / Sampling methods / School children / Schools / Screen time / Sedentary behavior / Sedentary Lifestyle / Self Report / Sleep / Sleep deprivation / Sleep Deprivation - epidemiology / Sleep duration / Sleep-wake cycle / Statistical analysis / Students / Students - statistics & numerical data / Studies / Time Factors / Trends / Vaccine / Variables / Victoria - epidemiology