Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/243796
Type: Artigo de periódico
Title: Assessment Of Total Body Water And Its Compartments In Elite Judo Athletes: Comparison Of Bioelectrical Impedance Spectroscopy With Dilution Techniques
Author: Goncalves
Ezequiel M.; Matias
Catarina N.; Santos
Diana A.; Sardinha
Luis B.; Silva
Analiza M.
Abstract: Bioelectrical impedance spectroscopy (BIS) is an inexpensive and non-invasive technique to measure total body water (TBW), extracellular water (ECW), and intracellular water (ICW). The purpose of this study was to validate TBW, ECW and ICW assessed by BIS, using dilution techniques as the reference method (REF) in elite judo athletes. Thirty-two Portuguese elite male judo athletes were evaluated during a period of weight stability. TBW, ECW and ICW were assessed by BIS (Xitron 4000). Deuterium and bromide dilution techniques were used as the criterion method for measuring TBW and ECW, while ICW was calculated as the difference between the two. BIS explained 96%, 77% and 94% of the total variability from REFs for TBW, ECW and ICW, respectively. BIS also demonstrated high precision (rho >= 0.88) and accuracy (C-b=0.98), with a minimum concordance coefficient correlation of 0.87 for ECW. The mean bias demonstrated that BIS slightly overestimated the REF in 1.1kg (2.3%), 0.3kg (1.6%) and 0.8kg (2.7%) for TBW, ECW and ICW, respectively. The 95% limits of agreement ranged from -1.2 to 3.3kg in TBW, from -1.8 to 2.4kg in ECW and from -1.0 to 2.6kg in ICW. A non-significant trend was found between the difference and the mean of reference and alternative methods. These findings highlight the efficacy of BIS as a valid non-biased tool for the assessment of TBW and its compartments in elite male judo athletes, during a period of weight stability.
Subject: Bioimpedance Spectroscopy
Urinary Indexes
Mass
Validation
Exercise
Accurate
Country: ABINGDON
Editor: TAYLOR & FRANCIS LTD
Citation: Assessment Of Total Body Water And Its Compartments In Elite Judo Athletes: Comparison Of Bioelectrical Impedance Spectroscopy With Dilution Techniques. Taylor & Francis Ltd, v. 33, p. 634-640 APR-2015.
Rights: embargo
Identifier DOI: 10.1080/02640414.2014.953981
Address: http://www.tandfonline.com/doi/full/10.1080/02640414.2014.953981
Date Issue: 2015
Appears in Collections:Unicamp - Artigos e Outros Documentos

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