论文部分内容阅读
目的:探讨5～11岁男童体成分中脂肪、去骨瘦体重的含量与变化特点,及它们与骨密度的关系。方法:选择2010年4月—2012年4月就诊于沈阳市儿童医院儿保门诊的健康体检男童,年龄5～11岁,共1150名,利用双能X线骨密度仪测量全身骨密度(BMD)、瘦体重(LBM)、体脂肪(FM)及体脂肪含量百分比(%BF)。按照年龄分组后,对数据进行组间比较和相关性分析。结果:男童全身及各部位FM、LBM、BMD随年龄增加而增加,男童11岁时出现FM突增。男童%BF9～11岁较稳定。多元线性回归分析结果显示,各年龄组全身%BF(11岁组男童仅LBM与全身BMD正相关)和LBM均与全身BMD正相关。结论:5～11岁男童FM、LBM的含量、比例和分布是一个变化的过程,对BMD的贡献不同,存在年龄差异。
OBJECTIVE: To investigate the content and characteristics of body fat and deboning lean body mass in 5 ~ 11 year-old boys and their relationship with bone mineral density. Methods: From April 2010 to April 2012, a total of 1150 healthy children aged 5-11 years were enrolled in the children’s health clinic of Shenyang Children’s Hospital. Total body mineral density (BMD) was measured by dual energy X-ray absorptiometry BMD), lean body mass (LBM), body fat (FM), and body fat percentage (% BF). After grouping by age, the data were compared between groups and the correlation analysis. Results: The changes of FM, LBM and BMD of the whole body and parts of the boy increased with the increase of age, and the sudden increase of FM occurred when the boy was 11 years old. % BF9 ~ 11 years old boy is more stable. Multiple linear regression analysis showed a positive correlation between% BF in all age groups (LBM positive for BMD in 11-year-old boys only) and LBM with systemic BMD. CONCLUSIONS: The content, proportion and distribution of FM and LBM in boys aged 5 to 11 years are a process of change. Their contributions to BMD are different, and there are differences in age.