Front. Nutr.Frontiers in NutritionFront. Nutr.2296-861XFrontiers Media S.A.10.3389/fnut.2022.1128979NutritionCorrectionCorrigendum: Development and cross-validation of a predictive equation for fat-free mass in Brazilian adolescents by bioelectrical impedanceCostaRoberto Fernandes da1*SilvaAnaliza M.2MassetKalina Veruska da Silva Bezerra1CesárioTatianny de Macêdo1CabralBreno Guilherme de Araújo Tinoco1FerrariGerson34DantasPaulo Moreira Silva11Physical Education Department, Health Sciences Center, Federal University of Rio Grande do Norte, Natal, Brazil2Exercise and Health Laboratory, CIPER, Faculdade Motricidade Humana, Universidade de Lisboa, Lisbon, Portugal3Escuela de Ciencias de la Actividad Física, el Deporte y la Salud, Universidad de Santiago de Chile (USACH), Santiago, Chile4Grupo de Estudio en Educación, Laboratorio de Rendimiento Humano, Actividad Física y Salud (GEEAFyS), Universidad Católica del Maule, Talca, Chile
Edited and reviewed by: Weimin Ye, Karolinska Institutet (KI), Sweden
*Correspondence: Roberto Fernandes da Costa ✉ roberto@robertocosta.com.br
This article was submitted to Nutritional Epidemiology, a section of the journal Frontiers in Nutrition
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A corrigendum on Development and cross-validation of a predictive equation for fat-free mass in Brazilian adolescents by bioelectrical impedance By Costa, R. F., Silva, A. M., Masset, K. V. d. S. B., Cesário. T. d. M., Cabral, B. G. d. A. T., Ferrari, G., and Dantas, P. M. S. (2022). Front. Nutr. 9:820736. doi: 10.3389/fnut.2022.820736body compositionbioelectrical impedance analysis (BIA)fat-free mass (FFM)fat massequationsmathematical modelscross-validation
In the original article, there was a mistake in Table 4 as published. The article included a table referring to another mathematical model, which does not refer to this study. The corrected Table 4 appears below.
Regression model for the prediction of fat-free mass (kg).
Variables included in the model
Regression coefficient
r2
SEE
p-value
Collinearity statistics
Tolerance
VIF
Constant
−17.189
< 0.001
Ht2/R
+0.498
0.916a
3.214
< 0.001
0.144
6.961
Weight
+0.226
0.935b
2.850
< 0.001
0.175
5.713
Reactance
+ 0.071
0.942c
2.689
< 0.001
0.639
1.565
Sex
−2.378
0.947d
2.579
< 0.001
0.693
1.443
Height
+0.097
0.949e
2.528
0.002
0.533
1.625
Age
+0.222
0.951f
2.498
0.027
0.355
2.817
SEE, standard error of the estimate; VIF, variance inflation factor. Predictors:
(Constant), Ht2/R.
(Constant),s Ht2/R, weight.
(Constant), Ht2/R, weight, and reactance;
(Constant), Ht2/R, weight, reactance, and sex.
(Constant), Ht2/R, weight, reactance, sex, and height;
(Constant), Ht2/R, weight, reactance, sex, and age. The r2 change was significant for a, b, c, d, e, and, f.
In the original article, there was an error on page 5 in the section Results. In the presentation of the mathematical model for FFM estimation, the word “Fri” appears instead of the word “Sex.”
The corrected mathematical model included is presented below:
FFM=−17.189+0.498(Height2/Resistance)+0.226 Weight +0.071 Reactance−2.378 Sex+0.097 Height +0.222 Age
Sex: male = 0; female = 1
The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The original article has been updated.
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