163906 20251219150008.0 doi 10.1249/01.mss.0000486656.18600.e8 sideral 106183 ART-2016-106183 eng Lozano-Berges, G. Universidad de Zaragoza (orcid)0000-0002-0137-9900 A New Specific Equation for the Assessment of Body Fat Percentage in Adolescent Soccer Players 2016 Access copy available to the general public Unrestricted PURPOSE: To determine whether the commonly used anthropometric equations or a new developed specific anthropometric equation are adequate to estimate body-fat percentage (BF%) in adolescent soccer players. METHODS: Ninety-eight players (65 males/33 females; 13.4 ± 0.6 years) from different Spanish soccer clubs participated in the present study. Following the recommendations of the International Society of the Advancement of Kinanthropometry (ISAK), biceps, triceps, subscapular, supraspinale, iliac-crest, abdominal, front thigh and medial calf skinfolds were measured and inserted in the following prediction equations to estimate BF%: Johnston et al., Slaughter et al., Carter et al., Faulkner et al. and Deurenberg et al. Dual energy X-ray absorptiometry (DXA) was used as a reference method to evaluate BF%. Several 2-paired samples t-test were used to compare BF% from DXA and the different equations. The validity and presence of heteroscedasticity of these equations was assessed by Bland-Altman analyses. Stepwise linear-regression was used to develop the soccer-specific equation. A cross-validation for the new anthropometric equation was performed using Stein´s equation. RESULTS: The developed equation resulted as follows: %BF = 11.115 + 0.775*(triceps skinfold) + 0.193*(iliac-crest skinfold) - 1.606*(sex; being sex=0 for female and sex=1 for male). The present study showed that Johnston et al. equation was the only one without differences with DXA, but with tendency towards heteroscedasticity. However, the proposed equation demonstrated high cross-validation prediction power (R2=0.85). CONCLUSIONS: The specific equation developed in the present study may be the most appropriate for estimating BF% in adolescent soccer players. info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 4.141 2016 SPORT SCIENCES 6 / 81 = 0.074 2016 Q1 T1 2.052 2016 Orthopedics and Sports Medicine 2016 Q1 Sports Science 2016 Q1 Physical Therapy, Sports Therapy and Rehabilitation 2016 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Matute-Llorente, A. Universidad de Zaragoza (orcid)0000-0001-8500-1667 Gomez-Bruton, A. Universidad de Zaragoza (orcid)0000-0002-0520-1640 Marin-Puyalto, J. Universidad de Zaragoza (orcid)0000-0002-1042-542X 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. 48, 5 (2016), 551 Med. sci. sports exerc. Medicine and science in sports and exercise 0195-9131 234836 http://zaguan.unizar.es/record/163906/files/texto_completo.pdf Postprint 6009041 http://zaguan.unizar.es/record/163906/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:163906 articulos driver 2025-12-19-14:58:08 ARTICLE