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Original Research
Published 7 October 2026
Quadrant training: a simple typology-based approach to improve strength and endurance in youth soccer players
Timo Steidle · Benedikt Meixner · Mascha Lenk · Marcelle Schaffarczyk · Billy Sperlich
Frontiers in Sports and Active Living
doi 10.3389/fspor.2026.1936767