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Titolo:
Reliability and validity of body composition measures in female athletes
Autore:
Fornetti, WC; Pivarnik, JM; Foley, JM; Fiechtner, JJ;
Indirizzi:
Michigan State Univ, Dept Kinesiol, E Lansing, MI 48824 USA Michigan StateUniv E Lansing MI USA 48824 esiol, E Lansing, MI 48824 USA Michigan State Univ, Dept Osteopath Surg Specialties, E Lansing, MI 48824 USA Michigan State Univ E Lansing MI USA 48824 lties, E Lansing, MI 48824 USA
Titolo Testata:
JOURNAL OF APPLIED PHYSIOLOGY
fascicolo: 3, volume: 87, anno: 1999,
pagine: 1114 - 1122
SICI:
8750-7587(199909)87:3<1114:RAVOBC>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
X-RAY ABSORPTIOMETRY; BIOELECTRICAL IMPEDANCE ANALYSIS; DENSITY; FAT; VALIDATION; MASS; PREDICTION; AMENORRHEA; SKINFOLDS; GYMNASTS;
Keywords:
body fat; dual-energy X-ray absorptiometry; sports; women;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
46
Recensione:
Indirizzi per estratti:
Indirizzo: Pivarnik, JM Michigan State Univ, Dept Kinesiol, E Lansing, MI 48824 USA Michigan State Univ E Lansing MI USA 48824 ing, MI 48824 USA
Citazione:
W.C. Fornetti et al., "Reliability and validity of body composition measures in female athletes", J APP PHYSL, 87(3), 1999, pp. 1114-1122

Abstract

The purpose of this investigation was to determine the reliability and validity of bioelectrical impedance (BIA) and near-infrared interactance (NIR)for estimating body composition in female athletes. Dual-energy X-ray absorptiometry was used as the criterion measure for fat-free mass (FFM). Studies were performed in 132 athletes [age = 20.4 +/- 1.5 (SD) yr]. Intraclass reliabilities (repeat and single trial) were 0.987-0.997 for BIA (resistance and reactance) and 0.957-0.980 for NIR (optical densities). Validity of BIA and NIR was assessed by double cross-validation. Because correlations were high (r = 0.969-0.983) and prediction errors low a single equation was developed by using all 132 subjects for both BIA and NIR. Also, an equation was developed for all subjects by using height and weight only. Results from dual-energy X-ray absorptiometry analysis showed FFM = 49.5 +/- 6.0 kg, which corresponded to %body fat (%BF) of 20.4 +/- 3.1%. BIA predicted FFM at49.4 +/- 5.9 kg (r = 0.981, SEE = 1.1), and NIR prediction was 49.5 +/- 5.8 kg (r = 0.975, SEE = 1.2). Height and weight alone predicted FFM at 49.4 /- 5.7 kg (r = 0.961, SEE = 1.6). When converted to %BF, prediction errorswere similar to 1.8% for BIA and NIR and 2.9% for height and weight. Results showed BIA and NIR to be extremely reliable and valid techniques for estimating body composition in college-age female athletes.

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Documento generato il 27/11/20 alle ore 02:21:45