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dc.contributor.authorunicampGonçalves, Ezequiel Moreira-
dc.titleAssessment of total body water and its compartments in elite judo athletes: comparison of bioelectrical impedance spectroscopy with dilution techniquespt_BR
dc.contributor.authorGonçalves, Ezequiel M.-
dc.contributor.authorMatias, Catarina N.-
dc.contributor.authorSantos, Diana A.-
dc.contributor.authorSardinha, Luis B.-
dc.contributor.authorSilva, Analiza M.-
dc.subjectComposição corporalpt_BR
dc.subject.otherlanguageBody compositionpt_BR
dc.description.abstractBioelectrical 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 (ρ ≥ 0.88) and accuracy (Cb = 0.98), with a minimum concordance coefficient correlation of 0.87 for ECW. The mean bias demonstrated that BIS slightly overestimated the REF in 1.1 kg (2.3%), 0.3 kg (1.6%) and 0.8 kg (2.7%) for TBW, ECW and ICW, respectively. The 95% limits of agreement ranged from −1.2 to 3.3 kg in TBW, from −1.8 to 2.4 kg in ECW and from −1.0 to 2.6 kg 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.pt_BR
dc.relation.ispartofJournal of sports sciencespt_BR
dc.relation.ispartofabbreviationJ. sports sci.pt_BR
dc.publisher.countryReino Unidopt_BR
dc.publisherTaylor & Francispt_BR
dc.description.provenanceSubmitted by Bruna Maria Campos da Cunha ( on 2021-01-08T16:44:47Z No. of bitstreams: 0. Added 1 bitstream(s) on 2021-02-19T18:01:42Z : No. of bitstreams: 1 000348652200012.pdf: 255171 bytes, checksum: 5e69ab62d8665af181d6a5584deca5ca (MD5)en
dc.description.provenanceMade available in DSpace on 2021-01-08T16:44:47Z (GMT). No. of bitstreams: 0 Previous issue date: 2015en
dc.contributor.departmentSem informaçãopt_BR
dc.contributor.unidadeFaculdade de Ciências Médicaspt_BR
dc.subject.keywordSodium bromidept_BR
dc.subject.keywordDeuterium oxidept_BR
dc.subject.keywordDilution techniquespt_BR
dc.subject.keywordExtracellular waterpt_BR
dc.type.formArtigo originalpt_BR
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