150178 20251017144549.0 doi 10.1123/ijsnem.2018-0099 sideral 112698 ART-2019-112698 eng Lozano-Berges, G. Universidad de Zaragoza (orcid)0000-0002-0137-9900 Accurate Prediction Equation to Assess Body Fat in Male and Female Adolescent Football Players 2019 Access copy available to the general public Unrestricted The aims of this study were (a) to determine which of the most used anthropometric equations was the most accurate to estimate percentage of body fat (%BF), (b) to develop a new specific anthropometric equation, and (c) to validate this football-specific equation. A total of 126 (13.3 +/- 0.6 years) football players (86 males and 40 females) participated in the present study. Participants were divided into two groups: 98 players were included in the assessment of existing equations and in the development of the new prediction equation, and 28 players were used to validate it. %BF was measured with dual-energy X-ray absorptiometry (DXA) and also estimated with six different %BF anthropometric equations: Johnston, Slaughter, Carter, Faulkner, Deurenberg, and S anti-Maria. Paired t tests were used to analyze differences between methods. A football-specific equation was developed by a stepwise linear regression. The existing anthropometric equations showed significant bias for %BF when compared with DXA (p < .001; constant error ranged from -4.57% to 9.24%; standard error of estimate ranged from 2.46 to 4.20). On the other hand, the developed football-specific equation was %BF = 11.115 + 0.775 (triceps skinfold) + 0.193 (iliac crest skinfold) - 1.606 (sex). The developed equation demonstrated neither %BF differences (p = .121; constant error = 0.57%; standard error of estimate = 0.36) when compared with DXA, presenting a high cross-validation prediction power (R-2 = .85). Published anthropometric equations were not accurate to estimate %BF in adolescent football players. Due to the fact that the developed football-specific equation showed neither differences nor heteroscedasticity when compared with DXA, this equation is recommended to assess %BF in adolescent football players. info:eu-repo/grantAgreement/ES/MEC/FPU13-02111 info:eu-repo/grantAgreement/ES/MINECO/DEP2012-32724 info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 3.884 2019 SPORT SCIENCES 10 / 85 = 0.118 2019 Q1 T1 NUTRITION & DIETETICS 26 / 89 = 0.292 2019 Q2 T1 1.235 2019 Medicine (miscellaneous) 2019 Q1 Sports Science 2019 Q1 Orthopedics and Sports Medicine 2019 Q1 Nutrition and Dietetics 2019 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/submittedVersion Matute-Llorente, A. Universidad de Zaragoza (orcid)0000-0001-8500-1667 Gomez-Bruton, A. Universidad de Zaragoza (orcid)0000-0002-0520-1640 Gonzalez-Aguero, A. Universidad de Zaragoza (orcid)0000-0002-1132-5906 Vicente-Rodriguez, G. Universidad de Zaragoza (orcid)0000-0002-4303-4097 Casajus, J.A. Universidad de Zaragoza (orcid)0000-0002-7215-6931 1006 245 Universidad de Zaragoza Dpto. Fisiatría y Enfermería Área Educación Física y Depor. 29, 3 (2019), 297-302 Int. j. sport nutr. exerc. metab. INTERNATIONAL JOURNAL OF SPORT NUTRITION AND EXERCISE METABOLISM 1526-484X 292073 http://zaguan.unizar.es/record/150178/files/texto_completo.pdf Preprint 1616571 http://zaguan.unizar.es/record/150178/files/texto_completo.jpg?subformat=icon icon Preprint oai:zaguan.unizar.es:150178 articulos driver 2025-10-17-14:11:20 ARTICLE