Strength training is essential for enhancing performance and preventing injuries in soccer. This narrative review explores the complexities of strength training for soccer players, structured around three key areas: (i) the classification and definition of different strength expressions, (ii) the role of the force–velocity continuum in soccer-specific power development, and (iii) the tailored strength methodologies required across different phases of the season. The aim is to clarify how distinct strength qualities align with the physical and performance demands of soccer.
The review synthesizes current evidence on the effects of different strength training strategies on key athletic outcomes, highlighting the relevance of explosive methods during the in-season and the foundational role of traditional strength training during the off-season. By integrating theoretical concepts with applied perspectives, the review proposes a conceptual framework that provides evidence-informed recommendations to support practitioners in designing safe, effective, and context-specific training programs for soccer players across developmental stages and competitive schedules.
Future research should focus on improving the methodological quality and consistency of intervention studies, clarifying dose–response relationships, and examining the transfer of specific strength qualities to match-related performance outcomes across different age groups and competition levels.
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