Multi-joint isokinetic strength profiling as a predictor of vertical jump performance in elite freestyle wrestlers: A cross-sectional principal component analysis

Wrestling requires coordinated lower-limb strength for explosive techniques. While isokinetic testing isolates joint-specific strength and countermovement jumps assess functional power, comprehensive multi-joint assessments with advanced factor analysis remain unexplored in elite wrestlers. Twenty-one national-level male freestyle wrestlers (22.3 ± 2.8 years; 76.2 ± 14.7 kg) completed cross-sectional neuromuscular assessments. Isokinetic concentric strength testing at 60°/s evaluated hip, knee, and ankle joint functions bilaterally using an Isomed 2000 dynamometer. Vertical jump power was assessed through countermovement jumps under bilateral and unilateral conditions using the Optojump system. All strength…