Multilevel Analysis of Body Composition in Elite and Sub-Elite Female Volleyball Players: Structural and Potentially Modifiable Characteristics

Body composition is a key factor in volleyball performance, but research on female athletes has largely focused on only a few general traits. This study compared elite and sub-elite female volleyball players using a multilevel body composition framework to compare structural and potentially modifiable characteristics across competitive levels. Forty female volleyball players were assessed and classified as elite (n = 15) or sub-elite (n = 25). Body composition was assessed using anthropometry and ultrasound. Elite players were taller (183.1 ± 8.2 vs. 170.7 ± 8.8 cm), heavier (76.0 ± 8.5 vs. 65.8 ± 9.1 kg), and displayed distinct body proportions compared with sub-elite players. The elite group also showed higher skeletal muscle index (SMI: 8.1 ± 0.7 vs. 7.3 ± 0.7 kg·m−2) and lower fat mass percentage (22.3 ± 2.2 vs. 25.3 ± 4.4%). However, differences in adiposity were attenuated when normalized for stature using fat mass index (FMI: 5.1 ± 0.8 vs. 5.8 ± 1.5 kg·m−2). Ultrasound-derived data indicated greater regional muscularity in elite players, whereas no differences were observed in the sum of adipose tissue layers, consistent with anthropometric skinfolds. The muscle-to-bone ratio did not differ between groups, suggesting proportional development of muscle and bone mass. Elite female volleyball players were characterized by greater structural dimensions and muscularity, whereas FMI appeared more informative than FM% for assessing adiposity.