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The Influence of Secular Trends in Body Height and Weight on the Prevalence of Overweight and Obesity among Chinese Children and Adolescents.
- Source :
-
Biomedical and environmental sciences : BES [Biomed Environ Sci] 2016 Dec; Vol. 29 (12), pp. 849-857. - Publication Year :
- 2016
-
Abstract
- Objective: To explore the influence of secular trends in body height and weight on the prevalence of overweight and obesity among Chinese children and adolescents.<br />Methods: The data were obtained from five cross-sectional Chinese National Surveys on Students' Constitution and Health. Overweight/obesity was defined as BMI-for-age Z-score of per the Wold Health Organization (WHO) reference values. Body height and weight for each sex and age were standardized to those reported in 1985 (standardized height: SHY; standardized weight: SWY) and for each sex and year at age 7 (standardized height: SHA; standardized weight: SWA) using the Z-score method.<br />Results: The prevalence of overweight/obesity in Chinese children was 20.2% among boys and 10.7% among girls in 2010 and increased continuously from 1985 to 2010. Among boys and girls of normal weight, SHY and SHA were significantly greater than SWY and SWA, respectively (P < 0.001). Among boys and girls with overweight/obesity, SHY was significantly lower than SWY (P < 0.001), and showed an obvious decreasing trend after age 12. SHA was lower than SWA among overweight boys aged 7-8 years and girls aged 7-9 years. SHY/SHW and SHA/SWA among normal-weight groups were greater than among overweight and obese groups (P < 0.001).<br />Conclusion: The continuous increase in the prevalence of overweight/obesity among Chinese children may be related to a rapid increase in body weight before age 9 and lack of secular increase in body height after age 12.<br /> (Copyright © 2016 The Editorial Board of Biomedical and Environmental Sciences. Published by China CDC. All rights reserved.)
Details
- Language :
- English
- ISSN :
- 0895-3988
- Volume :
- 29
- Issue :
- 12
- Database :
- MEDLINE
- Journal :
- Biomedical and environmental sciences : BES
- Publication Type :
- Academic Journal
- Accession number :
- 28081745
- Full Text :
- https://doi.org/10.3967/bes2016.114