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Table 1 Technical and tactical parameters for bio-banded compared to conventional match play based on chronological age (CA) groups

From: Bio-banding in junior soccer players: a pilot study

ParameterBBCAp-value95% CICohen’s d
Duels [n]6.8 ± 3.44.4 ± 1.70.02[0.4, 4.4]0.89
Difference in ball possession between teams [% p.]6.0 ± 16.018.8 ± 20.60.06[− 26.1, 0.5]0.69
Mean time of ball possession per action [s]10.7 ± 2.712.4 ± 2.70.02[− 3.0, − 0.3]0.62
Changes in ball possession [n]30.4 ± 8.326.3 ± 6.60.08[− 0.5, 8.8]0.55
Fouls [n]1.1 ± 0.91.3 ± 1.30.57[− 0.9, 0.5]0.17
Set pieces [n]10.3 ± 2.97.5 ± 2.60.03[0.4, 5.1]1.00
Shots [n]3.4 ± 2.03.8 ± 1.80.53[− 1.6, 0.9]0.20
Successful goal attempts [%]30.3 ± 38.625.6 ± 23.10.76[− 14.6, 23.9]0.15
Passes [n]41.4 ± 7.540.6 ± 10.90.80[− 6.2, 8.0]0.09
Successful passes [%]65.3 ± 8.274.5 ± 6.6< 0.01[− 14.1, − 4.3]1.23
Unsuccessful passes [%]34.7 ± 8.225.5 ± 6.6< 0.01[3.8, 14.6]1.06