Velocity-Based Strength Training: An Integrative Analysis of Methodological Evolution, Training Advantages, and Limiting Factors

Abstract

Velocity-based strength training, leveraging the iterative advancement of sports biomechanical measurement technologies, has completed a paradigm shift from a load-monitoring tool to an independent training methodology. This method is theoretically centered on the individualized construction of the load-velocity profile and the dynamic regulation of velocity loss thresholds, reconstructing the traditional open-loop training decision-making process into a closed-loop adaptive control process through a real-time feedback mechanism. Its training advantages are manifested in the selective enhancement of high-threshold motor unit recruitment and discharge frequency, the quantitative management of fatigue and recovery states, and the optimization of sport-specific performance transfer achieved through targeted intervention in the high-velocity region of the force-velocity curve. The application efficacy of this method is simultaneously constrained by factors affecting the external validity of the load-velocity relationship, the inter-individual response heterogeneity to velocity loss thresholds, and its dependence on equipment. This study constructs a theoretical framework for this method across three dimensions-methodological evolution, training advantages, and limiting factors-thereby providing a theoretical reference for defining its application boundaries and enabling individualized programming.