MEASUREMENT OF BODY-COMPOSITION IN THE ELDERLY - DUAL-ENERGY X-RAY ABSORPTIOMETRY, UNDERWATER WEIGHING, BIOELECTRICAL-IMPEDANCE ANALYSIS, AND ANTHROPOMETRY

被引:24
作者
BRODOWICZ, GR [1 ]
MANSFIELD, RA [1 ]
MCCLUNG, MR [1 ]
ALTHOFF, SA [1 ]
机构
[1] PROVIDENCE MED CTR,CTR METAB BONE DISORDERS,PORTLAND,OR
关键词
BODY COMPOSITION; DUAL ENERGY X-RAY ABSORPTIOMETRY; BIOELECTRICAL IMPEDANCE; ANTHROPOMETRY; BODY DENSITY;
D O I
10.1159/000213608
中图分类号
R592 [老年病学]; C [社会科学总论];
学科分类号
03 ; 0303 ; 100203 ;
摘要
Body composition of both younger and older subjects was estimated using several different methods in order to evaluate their use with elderly subjects. Estimates were obtained by dual energy x-ray absorptiometry, underwater weighing, bioelectrical impedance analysis, and skinfold measurement in 48 younger subjects (26-40 years) and 44 older subjects (65-85 years). In older men and women the underwater weighing percent fat estimates were significantly higher than all other methods. Bone mineral explained a significant proportion of the variance in the difference between the dual energy x-ray absorptiometry and underwater weighing estimates of percent fat (R(2) = 0.442-0.627). Because of its insensitivity to variability in bone mineral, we recommend that the underwater weighing method be not used to estimate percent fat in older men and women. Dual energy x-ray absorptiometry provides an alternative which accounts for the age-related decrease in bone mineral density.
引用
收藏
页码:332 / 339
页数:8
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