“…To date, the majority of authors have focused on defining single factors, e.g., morphological factors that reveal the importance of growth and weight for successful development (Borukova, 2019;Borukova, 2017;Chanev, 2019;Kolev, 2016), structure (Pieter, 2010;Toskovic et al, 2004), biomechanics (Markovic et al, 2005;Wasik, 2009), physiology (Zar et al 2008), coordination (Sadowski, Gierczuk, 2009;Zar et al, 2008) and conditioning (Melhim, 2001), and the correlations of these with competition results.…”