Development and cross-validation of predictive equations of fat-free mass by bioelectrical impedance for Brazilian men aged 20 to 59 years old
DOI:
https://doi.org/10.6063/motricidade.16232Abstract
The aim of this study was to develop and validate a fat free mass predictive equation by bioelectrical impedance for men of the Brazilian population. A total of 203 males aged 20 to 59 years were randomly divided into two groups: development (102) and cross-validation (101). The standard technique was dual energy radiological Abortometry (DXA). Paired t-test, multiple regression and plot of Bland-Altman were used to test the validity of the proposed model. The equation derived from the study was: FFM = 17.57 + 0.348 (Stature2/ Resistance) + 0.513 Body Mass - 0.283 Abdominal Perimeter + 0.079 Reactance - 0.038 age; concordance correlation coefficient - CCC = 0.937; r2= 0.89; standard error of estimate - SEE = 2.55 kg; pure error - PE = 2.51 kg. Thus, the new equation proposed provides a valid estimate of fat-free mass and is recommended for men with similar characteristics.
Downloads
Published
Issue
Section
License
The authors of submitted manuscripts must transfer the full copyright to Journal Motricidade / Desafio Singular Editions. Granting copyright permission allows the publication and dissemination of the article in printed or electronic formats and copyrights start at the moment the manuscript is accepted for publication. It also allows Journal Motricidade to use and commercialize the article in terms of licensing, lending or selling its content to indexation/abstracts databases and other entities.
According to the terms of the Creative Commons licence, authors may reproduce a reasonable number of copies for personal or professional purpose but without any economic gains. SHERPA/RoMEO allows authors to post a final digital copy (post-printing version) of the article in their websites or on their institutions' scientific repository.
