Assessment of fat-free mass from bioelectrical impedance analysis in men and women with Prader-Willi syndrome: cross-sectional study

被引：11

作者：

Bedogni, Giorgio ^{[1
,2
]}

Grugni, Graziano ^{[3
]}

Tringali, Gabriella ^{[4
,5
]}

Tamini, Sofia ^{[4
,5
]}

Marzullo, Paolo ^{[6
,7
]}

Sartorio, Alessandro ^{[3
,4
,5
]}

机构：

[1] Liver Res Ctr, Clin Epidemiol Unit, Bldg Q,AREA Sci Pk,Str Statale 14 Km 163-5, I-34012 Trieste, Italy

[2] Univ Milan, ICANS, Milan, Italy

[3] Ist Auxol Italiano, IRCCS, Div Auxol & Metab Dis, Oggebbio, VB, Italy

[4] Ist Auxol Italiano, IRCCS, Expt Lab Auxoendocrinol Res, Milan, Italy

[5] Ist Auxol Italiano, IRCCS, Expt Lab Auxoendocrinol Res, Oggebbio, VB, Italy

[6] Ist Auxol Italiano, IRCCS, Div Gen Med, Oggebbio, VB, Italy

[7] Univ Piemonte Orientale, Dept Translat Med, Novara, Italy

来源：

INTERNATIONAL JOURNAL OF FOOD SCIENCES AND NUTRITION | 2019年 / 70卷 / 05期

关键词：

Bioelectrical impedance analysis; body composition; dual energy X-ray absorptiometry; Prader-Willi syndrome; prediction equations; X-RAY ABSORPTIOMETRY; BODY-COMPOSITION; DISEASE;

D O I：

10.1080/09637486.2018.1554623

中图分类号：

TS2 [食品工业];

学科分类号：

0832 ;

摘要：

We have recently shown that population-specific formulae are required to estimate fat-free mass (FFM) from bioelectrical impedance analysis (BIA) in obese women with Prader-Willi syndrome (PWS) matched by age and percent fat mass (FM) to non-PWS women. The present cross-sectional study was aimed at developing generalised BIA equations that could be used in PWS subjects independently of sex and FM. We used dual-energy X-ray absorptiometry to measure FFM and BIA to measure whole-body impedance at 50 kHz (Z(50)) in 34 women and 21 men with PWS. The impedance index, that is, height (cm)(2)/Z(50) (omega), explained 77% (BCa-bootstrapped 95% CI 65 to 85%) of the variance of FFM with a root mean squared error of the estimate of 3.7 kg (BCa-bootstrapped 95% CI 3.2 to 4.5 kg). BIA can be used to estimate FFM in obese and non-obese PWS men and women by means of population-specific equations.

引用

页码：645 / 649

页数：5

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