biostudies-literatureUnknownPecci J<h4>Context</h4>Manipulation of resistance training variables influences the structural and functional adaptations of muscle, having a great impact on sport performance and hamstring injury prevention.<h4>Objective</h4>To analyze how the main resistance training variables affect the biceps femoris long head architecture in soccer players.<h4>Data sources</h4>Five databases were searched from inception to January 2024.<h4>Study selection</h4>Studies that included training intervention groups and measured muscle architecture adaptations before and after the training program in soccer players were included.<h4>Study design</h4>Systematic review with meta-analysis.<h4>Level of evidence</h4>Level 2.<h4>Data extraction</h4>Muscle thickness, fascicle length, and pennation angle were extracted froSports health19417381251331607https://www.ebi.ac.uk/biostudies/studies/S-EPMC11999990biostudies-literatureInfluence of Resistance Training Variables and the Nordic Hamstring Exercise on Biceps Femoris Architectural Adaptations in Soccer Players: A Systematic Review.PMC11999990Sanudo BPecci JSaez de Villarreal ERamirez-Campillo RfalseInfluence of Resistance Training Variables and the Nordic Hamstring Exercise on Biceps Femoris Architectural Adaptations in Soccer Players: A Systematic Review.<h4>Context</h4>Manipulation of resistance training variables influences the structural and functional adaptations of muscle, having a great impact on sport performance and hamstring injury prevention.<h4>Objective</h4>To analyze how the main resistance training variables affect the biceps femoris long head architecture in soccer players.<h4>Data sources</h4>Five databases were searched from inception to January 2024.<h4>Study selection</h4>Studies that included training intervention groups and measured muscle architecture adaptations before and after the training program in soccer players were included.<h4>Study design</h4>Systematic review with meta-analysis.<h4>Level of evidence</h4>Level 2.<h4>Data extraction</h4>Muscle thickness, fascicle length, and pennation angle were extracted fro2025-01-01T00:00:00Z2025 Apr2025-06-26T03:06:14.082Z2025-06-26T03:06:14.082ZS-EPMC119999904023034010.1177/19417381251331607