DETECTION OF SMALL CHANGES IN BODY-COMPOSITION BY DUAL-ENERGY X-RAY ABSORPTIOMETRY

被引：168
|
作者：
GOING, SB
MASSETT, MP
HALL, MC
BARE, LA
ROOT, PA
WILLIAMS, DP
LOHMAN, TG
机构：
[1] Dept. of Exercise and Sport Sciences, Ina E Gittings Building, University of Arizona, Tucson
来源：
AMERICAN JOURNAL OF CLINICAL NUTRITION | 1993年 / 57卷 / 06期
关键词：
BODY COMPOSITION; DUAL-ENERGY X-RAY ABSORPTIOMETRY; TOTAL MASS; LEAN-TISSUE MASS; BONE MINERAL; FAT MASS; DEHYDRATION; REHYDRATION; DENSITOMETRY;
D O I：
10.1093/ajcn/57.6.845
中图分类号：
R15 [营养卫生、食品卫生]; TS201 [基础科学];
学科分类号：
100403 ;
摘要：
The ability of dual-energy x-ray absorptiometry (DEXA) to detect small changes in body composition was studied in 17 men and women during a dehydration-rehydration protocol. Scale weight (BW) and total mass (TM) from DEXA were highly related (r > 0.99) as were estimates of fat-free mass (r = 0.99) and percent fat (r = 0.97) from DEXA and densitometry. Changes in BW of almost-equal-to 1.5 kg due to fluid loss and pin were highly correlated (r = 0.90) with both changes in TM and soft-tissue mass (STM) by DEXA but less so (r = 0.67) with changes in lean-tissue mass (LTM). Mean changes in TM, STM, and LTM were not different (P > 0.05) from changes in BW. Estimates of bone mass and fat were unaffected by changes in hydration. We conclude that DEXA is able to detect small individual changes in TM and STM and is also useful for detecting group changes in LTM.
引用
收藏
页码：845 / 850
页数：6
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