Evaluation of overweight, obesity by different methods and analysis differences on body composition among children and adolescents in new urban area of Urumqi

YANG Yan; ZHANG Lu-lu; JIAZILA· Ai-shan-jiang; GUO Ni -ya; ZHENG Lan; CAI Wen-ping

doi:10.11852/zgetbjzz2020-0379

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Chinese Journal of Child Health Care ›› 2021, Vol. 29 ›› Issue (5) : 537-541. DOI: 10.11852/zgetbjzz2020-0379

Evaluation of overweight, obesity by different methods and analysis differences on body composition among children and adolescents in new urban area of Urumqi

YANG Yan, ZHANG Lu-lu, JIAZILA· Ai-shan-jiang, GUO Ni -ya, ZHENG Lan, CAI Wen-ping

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Objective To explore the developmental regularity and characteristics of body composition of children and adolescents aged 6~15 years in Urumqi, and to analyze its difference among normal, overweight and obese in children and adolescents, so as to explore the difference on evaluating obesity between body mass index(BMI) and body fat, in order to early detection of overweight and obesity in children and provide basis for developing improvement measures. Methods A total of 907 children and teenagers in Urumqi were enrolled in this study in January 2019.All body composition indicators were tested by body composition analyzer, and BMI-Z score was calculated.Overweight and obesity assessment referred to WS/t586-2018. Results Except for the body fat rate of boys, the body composition indexes of boys and girls had linear trends with age (P<0.05).BMI-Z scores of boys in different age groups were significantly higher than those of girls (P<0.05).Body fat percentage (BFP) in boys increased firstly and then decreased with age, while BFP in girls increased with age, and outpaced boys at the age of 11 years old.The overweight rate and obesity rate assessed by BMI and PBF were 11.5% and 9.0%, 14.1% and 20.5%, respectively.Among children with normal BMI, 7.6% and 3.1% were assessed as overweight and obesity by BFP.And 49.5% of children in BMI overweight group were assessed as obesity by BFP.The body composition indexes were significantly higher in overweight and obesity group than those in normal group (P<0.05). Conclusions The body composition of children and adolescents increases with age and has gender differences.The rate of overweight and obesity is slightly different by different methods, indicating that BMI is likely to underestimate the BFP of obese children.

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body composition curve / the rates of overweight and obesity / body composition difference

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YANG Yan, ZHANG Lu-lu, JIAZILA· Ai-shan-jiang, GUO Ni -ya, ZHENG Lan, CAI Wen-ping. Evaluation of overweight, obesity by different methods and analysis differences on body composition among children and adolescents in new urban area of Urumqi[J]. Chinese Journal of Child Health Care. 2021, 29(5): 537-541 https://doi.org/10.11852/zgetbjzz2020-0379

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