摘要
目的:研究成年人去脂组织重(fat-freemass,FFM)与身高之间的关系,并建立预测FFM的简单方程。方法:对955名健康成年人进行人体测量和生物电阻抗测量,按BMI分为肥胖组和非肥胖组,按年龄分别45岁以下组和45岁以上组,分析FFM与年龄和肥胖的关系。根据FFM是身高的异速生长指数的模型关系,进行非线性回归,建立指数曲线回归方程。结果:18～45岁健康成年人的身高为(1.65±0.07)m,体质量为(62.03±10.69)kg,体脂质量(11.28±6.75)kg,体脂含量(17.91±8.67)%,去脂组织含量(82.02±8.87)%,BMI(22.85±2.99)kg/m2,而46～74岁健康成年人的相应指标为(1.62±0.08)m,体质量为(66.08±10.21)kg,体脂质量(14.56±6.44)kg,体脂含量(22.09±9.23)%,去脂组织含量(77.58±10.07)%,BMI(25.19±2.95)kg/m2,差异有显著性意义(P<0.05);18～45岁与46～74岁的健康人的FFM分别为(50.93±10.23),(51.53±10.07)kg,差异无显著性意义(P>0.05);健康成年人的FFM并不随年龄增加;非肥胖组与肥胖组的FFM也是相对不变的。预测男性FFM的适宜方程为:FFM(kg)=24.98×身高1.68,预测女性FFM的适宜方程为:FFM(kg)=22.84×身高1.42。结论:以身高为变量能估计出正常成年人FFM的近似值。
AIM:To investigate the relationship between body height and fat-free mass(FFM ) in order to derive an approximation formula of FFM in healthy adults. METHODS:Totally 955 healthy adults were divided into obesity group and non-ob esity group according to body mass index(BMI) and redivided into two groups by t he age of 45,and the relation of FFM with age and obesity was analyzed.Nonlinear regression analysis was performed to assess the allometric relation of FFM with body height. RESULTS:For the healthy adults aged 18-45 years old,the body height was(1.65 ±0.07) m,body mass was(11.28±6.75) kg,the fat mass was(11.28±6.75) kg,the bod y fat percentage was(17.91±8.67)%,the FFM percentage was(82.02±8.87)%and the BMI was(22.85±2.99) kg/m2,but for the healthy adults aged 46-74 years old,the body height was(1.65±0.07) m,the body mass was(66.08±10.21 ) kg,the fat mass was(14.56±6.44) kg,the body fat percentage was(22.09±9.23) %,the FFM percenta ge was(77.58±10.07)%and the BMI was(25.19±2.95) kg/m2,the differences were si gnificant(P< 0.05).There was no significant difference in FFM between those aged 18-45[(50.93±10.23) kg] and those aged 46-74[(51.53±10.07) kg](P >0.05).The values for FFM in healthy adults increased with age and did not differ between obesity and non-obesity groups.The equations obtained by non-linear regression analysis that provided the best approximation of FFM for males was FFM(kg)=24 .98×Height1.68 and for females was FFM(kg)=22.84×Height1.42 . CONCLUSION:The exponential of body height as a predictor variable can be used to estimate the approximation of FFM.
出处
《中国临床康复》
CSCD
2004年第15期2968-2970,共3页
Chinese Journal of Clinical Rehabilitation
