Peak VO2 correction for fat-free mass estimated by anthropometry and DEXA

Página do item simplificado
dc.contributor.authorNeder, José Alberto [UNIFESP]
dc.contributor.authorLerario, Maria Cristina [UNIFESP]
dc.contributor.authorLazaretti-Castro, Marise [UNIFESP]
dc.contributor.authorSachs, Anita [UNIFESP]
dc.contributor.authorNery, Luiz Eduardo [UNIFESP]
dc.contributor.institutionUniv Glasgow
dc.contributor.institutionUniversidade Federal de São Paulo (UNIFESP)
dc.date.accessioned2016-01-24T12:31:30Z
dc.date.available2016-01-24T12:31:30Z
dc.date.issued2001-11-01
dc.description.abstractPurpose: Anthopometric (ANTHRO) and dual-energy x-ray absorptiometric (DEXA) estimates of total body and leg fat-free masses (FFM) were obtained in 77 randomly selected sedentary men and women, aged 20-80: intermethod limits of agreement and their clinical significance, as inferred from the differences on peak (V)over dotO(2) corrected for FFMANTHRO and FFMDEXA, were determined. Methods: Limits of agreement were calculated as mean bias +/- 95% confidence intervals: peak (V)over dotO(2) at maximum cycle ergometry was related to FFM(ANTHRO)and FFMDEXA by using both standard (y.x(-1)) and power function ratios (allometry). Results: Data distribution of the ANTHRO-DEXA differences presented significant heteroscedasticity in both sexes, i.e., differences were proportional to the mean (P<0.05). After logarithmic transformation, the mean bias 95% limits of agreement were expressed as ratios (ANTHRO-DEXA(-1) x/<divided by> error ratio): these corresponded to 0.95 x/divided by 1.11 or 0.99 x/divided by 1.15 for total body FFM and 0.90 x/divided by 1.10 or 1.02 x/divided by 1.07 for leg FFM in men and women, respectively. in addition, we found different allometric exponents for FFMANTHRO and FFMDEXA: the intermethod differences, therefore, increased after power function expression (P<0.05). Conclusion: Discrepancies between ANTHRO and DEXA measurements of FFM depend on the magnitude of the estimate: differences are typically within 10 to 15%. Importantly, FFM-corrected peak (V)over dotO(2) values can vary according to the method chosen for body composition assessment, especially when allometry is used for peak (V)over dotO(2) correction. These results demonstrate that ANTHRO-DEXA differences in FFM estimation do have relevant practical consequences for the analysis of maximum aerobic capacity in nontrained humans.en
dc.description.affiliationUniv Glasgow, Inst Biomed & Life Sci, Ctr Exercise Sci & Med, Glasgow G12 8QQ, Lanark, Scotland
dc.description.affiliationUniversidade Federal de São Paulo, Escola Paulista Med, Dept Med, Div Resp, São Paulo, Brazil
dc.description.affiliationUniversidade Federal de São Paulo, Escola Paulista Med, Dept Med, Div Endocrinol, São Paulo, Brazil
dc.description.affiliationUniversidade Federal de São Paulo, Escola Paulista Med, Dept Prevent & Social Med, São Paulo, Brazil
dc.description.affiliationUnifespUniversidade Federal de São Paulo, Escola Paulista Med, Dept Med, Div Resp, São Paulo, Brazil
dc.description.affiliationUnifespUniversidade Federal de São Paulo, Escola Paulista Med, Dept Med, Div Endocrinol, São Paulo, Brazil
dc.description.affiliationUnifespUniversidade Federal de São Paulo, Escola Paulista Med, Dept Prevent & Social Med, São Paulo, Brazil
dc.description.sourceWeb of Science
dc.format.extent1968-1975
dc.identifierhttp://dx.doi.org/10.1097/00005768-200111000-00025
dc.identifier.citationMedicine and Science in Sports and Exercise. Philadelphia: Lippincott Williams & Wilkins, v. 33, n. 11, p. 1968-1975, 2001.
dc.identifier.doi10.1097/00005768-200111000-00025
dc.identifier.issn0195-9131
dc.identifier.urihttp://repositorio.unifesp.br/handle/11600/26647
dc.identifier.wosWOS:000171960200025
dc.language.isoeng
dc.publisherLippincott Williams & Wilkins
dc.relation.ispartofMedicine and Science in Sports and Exercise
dc.rightsAcesso aberto
dc.subjectbody compositionen
dc.subjectDEXAen
dc.subjectlimits of agreementen
dc.subjectoxygen consumptionen
dc.subjectanthropometryen
dc.titlePeak VO2 correction for fat-free mass estimated by anthropometry and DEXAen
dc.typeArtigo
Arquivos
Coleções
Em verificação - Geral