Title: Body fat evaluation in male athletes from combat sports by comparing anthropometric, bioimpedance, and dual-energy X-ray absorptiometry measurements

Abstract

Multiple anthropometric equations have been developed aiming to provide accurate and affordable assessment of body fat composition in male athletes. This study examined correlations of values obtained from seventeen different anthropometric equations to DXA as well as BIA and DXA values. Male athletes (n = 101) from three different combat sports, wrestling (n = 33), judo (n = 35), and kickboxing (n = 33), with an average age of 20.9 ± 4.2 were included. Body fat percentage was estimated using anthropometry, BIA, and DXA. Correlations between anthropometric methods and DXA, as well as BIA and DXA, were determined using Spearman's rank correlation. Sixteen out of seventeen estimates of body fat percentages using existing anthropometric equations showed strong positive correlation with the values derived from DXA measurements (r = 0.569 - 0.909). The highest correlation was observed using the equation derived by Yuhasz, r = 0.909, followed by the equations from Oliver et al., Evans et al., Faulkner, and Thorland et al. (r ≈ 0.9). Statistical analysis of body fat percentages from DXA and BIA measurements also showed high positive correlation (r = 0.710). Correlation of seventeen anthropometric equations with BIA and DXA methods revealed that equations by Yuhasz, Oliver et al., Evans et al., Faulkner, and Thorland et al. are suitable alternative for assessing body fat percentage among male athletes from combat sports, showing even stronger correlation than BIA method

Biography

Graduated coach in sports • FISAF International sports medicine coach • Master of sports and therapeutic physical activities Doctor of Medical Sciences • Founder and president of the FIT IN club, Marko Dimitrijević Education • Fisaf International Academy in Belgrade in 2012 certificate core fitness instructor. Fisaf International Academy in Belgrade in 2013, certificate personal trainer in fitness. • Graduated trainer in sports at the Faculty of Sport Belgrade in 2017, mentor Prof. Dr. Franja Fratrić. • Master of academic studies, Faculty of Medicine in Belgrade in 2018, module "Physical activity, health and exercise therapy", mentor prof. Dr. Sanja Mazić. • 2019. Doctoral academic studies Faculty of Medicine Kragujevac, Experimental physiology and application in sports medicine, mentor Prof. Dr. Vlada Jakovljević and Prof. Dr. Vladimir Živković • McGill Method Leve 2, Assessment: Converging a precise diagnosis, mentor Dr. Stuart McGill in 2019. • McGill Method level 3, High performance training: Progressing backs from pain to performance, mentor Dr. Stuart McGill in 2019. Work experience • In 2016, he was chosen as the best fitness trainer by SRFS. Since 2020, fitness coach of the Crvena Zvezda judo club • In 2014, Marko Dimitrijević founded the personal health studio FIT IN, where he works as a personal fitness trainer. • Since 2020, he has been working as an assistant lecturer at the Faculty of Sports "University Union-Nikola Tesla", Department of Sports Medicine