doi:10.1249/01.mss.0000487965.17864.98engMatute-Llorente, A.Lozano-Berges, G.Gomez-Bruton, A.Gomez-Cabello, A.Gonzalez-Aguero, A.Vicente-Rodriguez, G.Casajus, J.A.Comparison Of Body Composition Methods For The Assessment Of Body Fat In Adolescent Soccer PlayersART-2016-106184Anthropometry, dual energy x-ray absorptiometry (DXA) and air displacement plethysmography (ADP) are widely used for assessing body fat percentage (%BF). The accuracy among body composition methods in different kind of populations such as children, adults, obese persons, and athletes has been studied but there are some discrepancies between them. PURPOSE: To compare %BF assessed by DXA, ADP and anthropometry in adolescent soccer players. METHODS: %BF was assessed in ninety-two soccer players (64 males, 13.3 ± 0.5 y; 28 females, 13.3 ± 0.6 y) by anthropometry, DXA and ADP. Anthropometry measurements were registered following the recommendations of the ISAK. Anthropometry %BF was calculated using the equation proposed by Slaughter et al for adolescents. ADP %BF was calculated with 3 different formulas: (i) the general Siri equation (ADPSiri); (ii) the age- and sex-specific equation by Lohman (ADPLohman) and (iii) the age- and sex-specific equation by Silva (ADPSilva). Agreement and differences between methods were assessed by two-paired samples t tests and calculating the 95% limits of agreement. RESULTS: In the whole sample, ADPSiri ADPLohman ADPSilva and anthropometry underestimated %BF by 2.0, 6.9, 6.2, and 6.0% respectively compared to DXA (all p<0.05). The 95% limits of agreement ranged from ±5.91% to ±10.78%. Similar results dividing by sex were found. CONCLUSION: Although the 3 used methodologies have been several times described as valid for the assessment of %BF, based in our data it seems that ADP, anthropometry and DXA are not interchangeable for the assessment of %BF in adolescent soccer players.2016http://zaguan.unizar.es/record/7563610.1249/01.mss.0000487965.17864.98http://zaguan.unizar.es/record/75636oai:zaguan.unizar.es:75636info:eu-repo/grantAgreement/ES/MEC/AP-2012-02854info:eu-repo/grantAgreement/ES/MINECO/DEP2012-32724MEDICINE AND SCIENCE IN SPORTS AND EXERCISE 48, 5 (2016), 986-987All rights reservedhttp://www.europeana.eu/rights/rr-f/info:eu-repo/semantics/openAccess