Comparison of Changes in Body Composition during Puberty Development of Obese and Normal-weight Children in China  

作　　者：JUN MA NING FENG SHI-WEI ZHANG YONG-PING PAN YONG-BO HUANG 

机构地区：[1]Institute of Child and Adolescent Health, School of Public Health, Peking University, Beijing 100191, China [2]National Center for Women and Children's Health, China CDC, Beijing 100013, China [3]Alnstitute of Primary and Secondary School Health of Dongcheng District, Beijing 100007, China [4]Institute of Primary and Secondary School Health of Chongwen District, Beijing 100062, China

出　　处：《Biomedical and Environmental Sciences》2009年第5期413-418,共6页生物医学与环境科学（英文版）

基　　金：supported by the 973 Project "Mechanism of Type 2 Diabetes Progression" (No. 2006CB503900) from Ministry of Science and Technology of China;Scientific Program from General Administration of Sport of China (No. 06134)

摘　　要：Objective To compare the changes in body composition, including fat mass index （FMI） and fat free mass index （FFMI） during puberty development of obese and normal-weight children in China, and to explore the effect of age and gender on body composition. Methods A total of 356 children at the age of 7-15 years were enrolled in this study. Body composition of 10 normal-weight and obese children in each age group was measured by dual-energy x-ray absorptiometry （DEXA）. FFMI and FMI were calculated according to the following formula： FFMI （kg·m^-2）=FFM（kg）/ height^2（m^2） and FMI（kg·m^-2）=FM （kg）/ height^2（m^2）. Results The fat mass and fat free mass of obese children were significantly higher than those of normal-weight children （P〈0.05）. The FMI and FFMI of obese children increased significantly with age and were higher than those of the same sex, gender, and age normal-weight children （P〈0.05）. Conclusion The levels of fat mass, fat free mass, FMI, and FFMI are different in obese and normal-weight children, and gender effects are significant in boys having higher levels of these indicators than in girls. FFMI and FMI can be used as monitoring indexes in weight control of obese children.Objective To compare the changes in body composition, including fat mass index （FMI） and fat free mass index （FFMI） during puberty development of obese and normal-weight children in China, and to explore the effect of age and gender on body composition. Methods A total of 356 children at the age of 7-15 years were enrolled in this study. Body composition of 10 normal-weight and obese children in each age group was measured by dual-energy x-ray absorptiometry （DEXA）. FFMI and FMI were calculated according to the following formula： FFMI （kg·m^-2）=FFM（kg）/ height^2（m^2） and FMI（kg·m^-2）=FM （kg）/ height^2（m^2）. Results The fat mass and fat free mass of obese children were significantly higher than those of normal-weight children （P〈0.05）. The FMI and FFMI of obese children increased significantly with age and were higher than those of the same sex, gender, and age normal-weight children （P〈0.05）. Conclusion The levels of fat mass, fat free mass, FMI, and FFMI are different in obese and normal-weight children, and gender effects are significant in boys having higher levels of these indicators than in girls. FFMI and FMI can be used as monitoring indexes in weight control of obese children.

关 键 词：Puberty development FMI FFM1 OBESE DEXA 

分 类 号：S965.215[农业科学—水产养殖] G804.49[农业科学—水产科学]