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  • Title: [Reference values of body fat indices in Chinese children aged 6-9 years old in Guangzhou].
    Author: Wei Y, Zhang Z, Wang J, Chen Y, Zhang J, William KA, Mao L.
    Journal: Wei Sheng Yan Jiu; 2018 May; 47(3):384-390. PubMed ID: 30082003.
    Abstract:
    OBJECTIVE: To establish normal reference values of total and segmental body fat distribution of children aged 6-9 years old in Guangzhou, which can be used for abnormal fat accumulation surveillance. METHODS: A total of 456 children aged 6-9 years old were enrolled between December, 2015 to March, 2017 in Guangzhou, China. Body composition was measured by dual-energy X-ray absorptiometry( DXA). The LMS regression method was used to construct age-and gender-specific smooth percentile curves of total body fat mass( TBFM), percentage of total body fat( % TBF), android fat mass, gynoid fat mass, appendicular fat mass( AFM), percentage android fat, percentage gynoid fat, percentage appendicular fat mass( % AFM) and android/gynoid ratio. The 5th to 85th, 85th and 95th centiles of body fat indexes were applied to define "normal", "overfat", and "obese"status. RESULTS: Linear trend test showed that except for total body fat percentage( % TBF) in girls, total body fat mass( TBFM), segmental body fat mass and % TBF increased significantly with age in both genders. The reference values of TBFM for boys in each age group were 3. 87-6. 04, 3. 72-7. 74, 3. 82-9. 85, 4. 30-13. 35 kg, respectively, and for girls were 3. 86-7. 76, 3. 97-8. 50, 4. 23-9. 46, 4. 78-10. 74 kg, respectively. The corresponding values for the % TBF were 20. 07%-28. 84%, 18. 50%-30. 32%, 17. 93%-31. 97%, 18. 10%-34. 81% in boys, and20. 91%-34. 14%, 20. 64%-34. 60%, 20. 18%-33. 99%, 20. 28%-34. 40% in girls, respectively. In terms of android/gynoid ratio, the values were 0. 62-0. 78, 0. 58-0. 83, 0. 58-0. 88, 0. 57-0. 93 for boys, and 0. 50-0. 76, 0. 54-0. 81, 0. 57-0. 85, 0. 50-0. 82 for girls, respectively. CONCLUSION: The data provided normal reference range for assessing body fat distribution in children aged 6-9 years in Guangzhou, China.
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