Kate A Heelan, R Todd Bartee, Allison Nihiser, Bettylou Sherry
Healthier School Environment Leads to Decreases in Childhood Obesity: The Kearney Nebraska Story
Childhood obesity (Print)
understand differences sleepingtime schooldays weekends among elementary school children crosssectional study conducted september november 2010 stratified random cluster sampling strategy used select participants diverse geographical economic levels eight provinces municipalities autonomous regions mainland china total number 20 603 elementary school children aged 612 years old chosen research subjects record time sleeping schooldays weekends among 612 year old time sleeping longer weekends schooldays average sleeping time weekends longer boys girls 335 p 005 however linearly decreasing trend along increase age regarding time sleeping weekends girls proportions serious lack sleep lack sleep sufficient sleep weekends 1363 2 80920 603 2727 5 61820 603 5910 12 17620 603 proportion sufficient sleep 50 significantly higher weekends schooldays less 30 however nearly one third first grade primary school children sleep insufficiently even weekends nearly 1000 children seriously moderately lack sleep schooldays still serious lack sleep state weekends three groups categorized serious lack sleep less 9 h lack sleep 910 h sufficient 10 h sleep schooldays accounted 2975 6448 8644 respectively compared national regulation set 10 h daily sleep children china proportions whose time sleep weekends less schooldays three groups moderate within 1 h 1 h caughtup 941 2277 4332 2450 respectively percentage pupils caught sleep appropriately within 1 h weekends among serious lack sleep schooldays would exceed 4000 proportions among lack sleep sufficient schooldays 5400 3000 percentage children slept less weekends schooldays among sufficient sleep schooldays appeared highest nearly 2000 however proportions among lack sleep seriously lack sleep schooldays 345 816 respectively found elementary school children could catch time sleep lack sleep weekends coexisting study situation called attention sleeping habit primary school children also urgently improved