摘要
Abstract
Objective To analyze the characteristics of body composition and relativity of fat and lean masses with bone mineral density (BMD) in low weight and obese children.Methods Children aged 5-7 years old receiving physical examination in Child Health Care Department of Meishan Maternal and Child Health Care Hospital from June 2015 to June 2016 were selected as study subjects and divided into low weight group, obese group and control group according to body mass index (BMI).Body composition indexes including percentage of body fat (PBF), fat mass (FM), lean mass (LM) and local and systemic BMD were measured and analyzed.Results Percentage of body fat, fat mass, lean mass and local and systemic bone mineral density in low weight group were significantly lower than those of children of same sex in control group, and differences had statistical significance (t value ranged 3.076 to 3.326, all P<0.05).Percentage of body fat, fat mass, lean mass and local and systemic bone mineral density in control group were significantly lower than those of children of same sex in obese group, and differences had statistical significance (t value ranged 2.998 to 3.427, all P<0.05).Logistic regression analysis showed that lean mass of children in low weight group was positively associated with bone mineral density at different parts (r value ranged 0.779 to 0.889, all P<0.05), lean mass was positively associated with lower limb bone mineral density and percentage of body fat and fat mass positively associated with trunk bone mineral density in obese group male children (r value ranged 0.779 to 0.882, all P<0.05), lean mass was positively associated with upper limb bone mineral density and percentage of body fat, fat mass and lean mass positively associated with lower limb bone mineral density in obese group female children (r value ranged 0.781 to 0.901, all P<0.05), and lean mass of children in control group was positively associated with bone mineral density at different parts (r value ranged 0.779 to 0.912, all P<0.05) and percentage of body fat, fat mass and lean mass were all positively associated with lower limb and systemic bone mineral density in control group female children (r value ranged 0.805 to 0.912, all P<0.05).Conclusion Body composition and correlation of each index with bone mineral density in low weight and obese children are different from those in normal children.In child health care department outpatient management, changes in body weight, percentage of body fat, fat mass, lean mass are important indicators demanding attention to enhance healthy bone development.关键词
体重/体脂比/全身脂肪含量/肌肉含量/骨密度Key words
body weight/percentage of body fat (PBF)/fat mass (FM)/lean mass (LM)/bone mineral density (BMD)分类
医药卫生
