Impact of on-field repeated sprint training on aerobic fitness and anaerobic performance in football athletes: A matched-pair design.

Post-hoc comparisons showed no significant differences in 10m DASH improvements between forwards and defenders (ΔM = 0.10, p = 0.834) or forwards and goalkeepers (ΔM = -0.26, p = 0.274), while differences between defenders and goalkeepers approached significance (ΔM = -0.36, p = 0.078).

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While the improvement in goalkeepers did not reach statistical significance, the effect size suggests potentially meaningful clinical benefit, especially given the smaller subgroup sample.

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