[Validation of lipids on body mass index reference recommended by Obesity Working Group, International Life Science Association of China]

Feng-ying Zhai, Li-wei Zhang, Chun-rong Wang, Jia-li Duan, Ruo-xiang Cao, Hui-jun Wang, Jian Zhang
Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi 2004, 25 (2): 117-9

OBJECTIVE: To assess the relationship between overweight, obesity and blood lipid profiles of children and adolescents and to validate body mass index (BMI) cutoff points for overweight and obesity screening to Chinese children and adolescents, recommended by Working Group of Obesity, China (WGOC), International Life Science Association.

METHODS: 2293 children and adolescents (1124 males and 1169 females), aged between 10 and 18 years, were randomly selected as samples from 6 schools in Beijing area. Fasting serum lipids including total cholesterol (TC), total triglycerides (TG), high density lipoprotein cholesterol (HDLC), thropometrical index as weight and height were measured. BMI equals to weight in kilograms were then divided by the square of height in meters.

RESULTS: According to BMI cutoff points recommended by WGOC, samples fell into 3 groups including normal group (BMI < 85 percentiles), overweight group (BMI >or= 85 and < 95 percentiles) and obesity group (BMI >or= 95 percentiles). Results clearly showed an increase of both serum TC and TG and a decrease of HDLC when BMI was increasing, among most age groups regardless of sex difference and the difference among BMI groups was statistically significant (P < 0.05 or P < 0.01).

CONCLUSIONS: Results of this study indicated that there was an obvious dose-effect relationship between BMI and lipid profiles which accounted for some rationality of the BMI cutoff points recommended by WGOC. The authors reckoned the findings important to managing relevant adult diseases during childhood, in China.

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