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Titolo:
Effect of race and resistance training status on the density of fat-free mass and percent fat estimates
Autore:
Millard-Stafford, ML; Collins, MA; Modlesky, CM; Snow, TK; Rosskopf, LB;
Indirizzi:
Georgia Inst Technol, Dept Hlth & Performance Sci, Exercise Physiol Lab, Atlanta, GA 30332 USA Georgia Inst Technol Atlanta GA USA 30332 siol Lab, Atlanta, GA 30332 USA Kennesaw State Univ, Dept Hlth Phys Educ & Sport Sci, Kennesaw, GA 30144 USA Kennesaw State Univ Kennesaw GA USA 30144 ort Sci, Kennesaw, GA 30144 USA 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: 3, volume: 91, anno: 2001,
pagine: 1259 - 1268
SICI:
8750-7587(200109)91:3<1259:EORART>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
COLLEGIATE FOOTBALL PLAYERS; TOTAL-BODY WATER; 4-COMPONENT MODEL; SKELETAL-MUSCLE; OLDER ADULTS; OBESE WOMEN; HYDRATION; EXERCISE; INDEXES; HUMANS;
Keywords:
body water; hydrodensitometry; bone mineral; body composition; Schutte equation; blacks;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
48
Recensione:
Indirizzi per estratti:
Indirizzo: Millard-Stafford, ML Georgia Inst Technol, Dept Hlth & Performance Sci, Exercise Physiol Lab, Atlanta, GA 30332 USA Georgia Inst Technol Atlanta GA USA 30332 30332 USA
Citazione:
M.L. Millard-Stafford et al., "Effect of race and resistance training status on the density of fat-free mass and percent fat estimates", J APP PHYSL, 91(3), 2001, pp. 1259-1268

Abstract

The impact of race and resistance training status on the assumed density of the fat-free mass (D-FFM) and estimates of body fatness via hydrodensitometry (% Fat(D)) vs. a four-component model (density, water, mineral; %Fat(D, W, M)) were determined in 45 men: white controls (W; n = 15), black controls (B; n = 15), and resistance-trained blacks (B-RT; n = 15). Body densityby hydrostatic weighing, body water by deuterium dilution, and bone mineral by dual-energy X-ray absorptiometry were used to estimate %Fat(D, W, M). D-FFM was not different between B and W (or 1.1 g/ml); however, D-FFM in B-RT was significantly lower (1.091 +/- 0.012 g/ml; P< 0.05). Therefore, %Fat(D) using the Siri equation was not different from %Fat(D, W, M) in W (17.5+/- 5.0 vs. 18.3 +/- 5.4%) or B (14.9 +/- 5.6 vs. 15.7 +/- 5.7%) but significantly overestimated %Fat(D, W, M) in B-RT (14.0 +/- 5.9 vs. 10.4 +/- 6.0%; P< 0.05). The use of a race-specific equation (assuming D-FFM = 1.113 g/ml) did not improve the agreement between %FatD and %Fat(D, W, M), resulting in a significantly greater mean (+/-SD) discrepancy for B (1.7 +/- 1.8% fat) and B-RT (6.2 +/- 4.3% fat). Thus race per se does not affect D-FFM or estimates of %Fat(D); however, B-RT have a D-FFM lower than 1.1 g/ml, leading to an overestimation of %Fat(D).

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Documento generato il 04/04/20 alle ore 10:58:01