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Titolo:
Relation of bone mineral density and content to mineral content and density of the fat-free mass
Autore:
Evans, EM; Prior, BM; Arngrimsson, SA; Modlesky, CM; Cureton, KJ;
Indirizzi:
Univ Georgia, Dept Exercise Sci, Athens, GA 30602 USA Univ Georgia AthensGA USA 30602 Dept Exercise Sci, Athens, GA 30602 USA Univ Georgia, Dept Foods & Nutr, Athens, GA 30602 USA Univ Georgia AthensGA USA 30602 Dept Foods & Nutr, Athens, GA 30602 USA
Titolo Testata:
JOURNAL OF APPLIED PHYSIOLOGY
fascicolo: 5, volume: 91, anno: 2001,
pagine: 2166 - 2172
SICI:
8750-7587(2001)91:5<2166:ROBMDA>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
BODY-COMPOSITION; WOMEN; FEMALES;
Keywords:
body composition; bone mineral; bone density; densitometry; dual-energy X-ray absorptiometry; multicomponent models;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Evans, EM Univ Illinois, Dept Kinesiol, 906 S Goodwin Ave,215 Freer Hall,MC 052, Urbana, IL 61801 USA Univ Illinois 906 S Goodwin Ave,215 Freer Hall,MC 052 Urbana IL USA 61801
Citazione:
E.M. Evans et al., "Relation of bone mineral density and content to mineral content and density of the fat-free mass", J APP PHYSL, 91(5), 2001, pp. 2166-2172

Abstract

Differences in the mineral fraction of the fat-free mass (M-FFM) and in the density of the FFM (D-FFM) are often inferred from measures of bone mineral content (BMC) or bone mineral density (BMD). We studied the relation of BMC and BMD to the M-FFM and D-FFM in a heterogeneous sample of 216 young men (n = 115) and women (n = 101), which included whites (n = 155) and blacks (n = 61) and collegiate athletes ( n = 132) and nonathletes (n = 584). Whole body BMC and BMD were determined by dual-energy X-ray absorptiometry (DXA; Hologic QDR-1000W, enhanced whole body analysis software, version 5.71). FFM was estimated using a four-component model from measures of body density by hydrostatic weighing, body water by deuterium dilution, and bone mineral by DXA. There was no significant relation of BMD to M-FFM (r = 0.01) or D-FFM (r = -0.06) or of BMC to M-FFM (r = -0.11) and a significant, weak negative relation of BMC to D-FFM (r = -0.14, P = 0.04) in all subjects. Significant low to moderate relationships of BMD or BMC to M-FFM or D-FFM were found within some gender-race-athletic status subgroups or when the effects of gender, race, and athletic status were held constant using multiple regression, but BMD and BMC explained only 10-17% of the variance in M-FFM and 0-2% of the variance in D-FFM in addition to that explained by the demographic variables. We conclude that there is not a significant positive relation of BMD and BMC to M-FFM or D-FFM in young adults and that BMC and BMD should not be used to infer differences in M-FFM or D-FFM.

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Documento generato il 05/07/20 alle ore 09:45:01