Testing the effects of 4-week training programs based on extreme and medium-sided soccer games

This study tested the effects of two training programs (1v1 vs. 5v5) on the physical fitness adaptations of youth soccer players. In specific, it was analyzed the effects of the training programs on the 5–0–5 change-of-direction time (5–0–5 time), countermovement jump (CMJ), and final velocity in the 30–15 Intermittent Fitness test (VIFT).

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