Wei Yuanhuan, Zhang Zheqing, Wang Jue, Chen Yongxin, Zhang Jiahua, William Kwame Amakye, Mao Limei
Department of Nutrition and Food Hygiene, School of Public Health, Southern Medical University, Guangzhou 510515, China.
Wei Sheng Yan Jiu. 2018 May;47(3):384-390.
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.
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.
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.
The data provided normal reference range for assessing body fat distribution in children aged 6-9 years in Guangzhou, China.
建立广州6-9岁儿童全身及局部体脂分布的正常参考值，用于异常脂肪堆积监测。
2015年12月至2017年3月期间，在中国广州共纳入456名6-9岁儿童。采用双能X线吸收法（DXA）测量身体成分。运用LMS回归方法构建全身脂肪量（TBFM）、全身脂肪百分比（%TBF）、男性型脂肪量、女性型脂肪量、四肢脂肪量（AFM）、男性型脂肪百分比、女性型脂肪百分比、四肢脂肪百分比（%AFM）及男性型/女性型脂肪比例的年龄和性别特异性平滑百分位数曲线。应用体脂指数的第5至85百分位数、第85百分位数和第95百分位数来定义“正常”“超重”和“肥胖”状态。
线性趋势检验显示，除女孩的全身脂肪百分比（%TBF）外，男女两性的全身脂肪量（TBFM）、局部体脂量和%TBF均随年龄显著增加。各年龄组男孩的TBFM参考值分别为3.87-6.04、3.72-7.74、3.82-9.85、4.30-13.35kg，女孩分别为3.86-7.76、3.97-8.50、4.23-9.46、4.78-10.74kg。男孩%TBF的相应值分别为20.07%-28.84%、18.50%-30.32%、17.93%-31.97%、18.10%-34.81%，女孩分别为20.91%-34.14%、20.64%-34.60%、20.18%-33.99%、20.28%-34.40%。就男性型/女性型脂肪比例而言，男孩的值分别为0.62-0.78、0.58-0.83、0.58-0.88、0.57-0.93，女孩分别为0.50-0.76、0.54-0.81、0.57-0.85、0.50-0.82。
本数据为评估中国广州6-9岁儿童的体脂分布提供了正常参考范围。
