Acute effects of FIFA 11+, PEP, HarmoKnee, and dynamic warm-up protocols on phase-specific countermovement jump performance and neuromuscular activation in elite youth soccer players

These phase-specific enhancements suggest that the FIFA 11 + protocol enhances the neuromuscular system for rapid force production and absorption more effectively than other warm-up routines. The findings support the use of structured neuromuscular warm-ups for optimizing acute performance, although future longitudinal studies should examine their cumulative effects on injury prevention.