老年人身体脂肪分布与骨密度关系的研究  

Relationship between body fat distribution and bone mineral density in the aged

作　　者：余晶波[1] 姚麒[1] 郑一波[1] 张剑江[1] 赵敏[1] 王世玉[1] 沈南芬[1] 

机构地区：[1]宁波市第一医院老年科,315010

出　　处：《中华老年医学杂志》2009年第10期837-839,共3页Chinese Journal of Geriatrics

基　　金：浙江省医药卫生科学研究基金（2007B197）

摘　　要：目的研究中国宁波市老年人骨密度（BMD）与年龄、体质指数（BMI）、身体脂肪（体脂）、肌肉的关系。方法选择宁波市老年男性61例，用双能X线吸收法测量法（DXA）测定腰椎BMD、全身BMD和体脂、肌肉分布，并与63例老年女性进行对照。结果老年男性腰椎BMD与年龄呈负相关（r=-0．401，P＜0．01），与BMI、全身肌肉比例、躯干肌肉比例、全身脂肪比例及躯干脂肪比例呈正相关（分别为r一0．560，P％0．01；r=0．249，P％0．05；r=0．214，P〉0．05；r=0．276，P〈0．05；r=0．217，P〈0．01）；全身BMD与年龄呈负相关（r=-0．423，P〈0．01），与BMI、全身肌肉比例、躯干肌肉比例、全身脂肪比例和躯干脂肪比例呈正相关（分别为r=0．542，P〈0．01；r=0．314，P〈0．05；r=0．197，P〉0．05；r=0．253，P〈0．05；r=0．191，P〉0．01）。老年女性腰椎BMD及全身BMD与年龄（r=0．364，P〈0．01；r=0．412，P〈0．01）、BMI（r=0．413，P〈0．01；r=0．49，P〈0．01）、全身肌肉比例（r=0．246，P〈0．05；r=0．246，P〈0．01）、躯干肌肉比例（r=0．215，P〈0．05；r=0．320，P〈0．01）、全身脂肪比例（r=0．361，P〈0．01；R=0．507，P％0．01）及躯干脂肪比例（r=0．434，P＜0．01；r=0．422，P％0．01）呈正相关。结论老年女性体脂与BMD相关性较男性更为密切；躯干脂肪与腰椎BMD呈正相关，提示向心性肥胖可能对腰椎BMD有保护作用。Objective To explore the relationship between bone mineral density（BMD） and body tat disrribution in the aged in Ningbo area of China. Methods The BMD of lumbar vertebra and total body bones as well as body composition were measured by dual energy X-ray absorptiometry （DXA） in 61 aged males, and also in 63 aged females as control group. Results In the aged males, a negative correlation was found between BMD and age, while BMI, muscle, trunk fat were positively correlated with BMD. As for the aged female, age, BMI, muscle and fat were all positively correlated with BMD. Conclusions The correlation between body fat and BMD is closer in females than in males in the aged. There is a positive correlation between trunk fat and lumbar spine BMD, and it indicates that central obesity may have a protective effect on lumbar spine BMD.

关 键 词：骨密度 脂肪 

分 类 号：R686[医药卫生—骨科学]