Table 3. Physical performance changes from pre- to post-intervention (mean ± SD). Variables Groups Pre-intervention Post-intervention Significant Hedge's g (95% CI) CMVJ (cm) sSIT 33.8 ± 2.9 35.7 ± 2.7* Time Effect 0.64 (-0.36 to 1.65) Moderate ↑ RT 34.3 ± 2.8 37.1 ± 3.2* 0.001 0.88 (-0.15 to 1.91) Moderate ↑ sSIT+RT 34.2 ± 2.4 38.3 ± 2.5* Group × Time Effect 1.58 (0.46 to 2.70) Large ↑ RT+sSIT 34.6 ± 2.6 38.7 ± 2.4* 0.001 1.55 (0.43 to 2.67) Large ↑ CG 34.5 ± 2.6 34.8 ± 2.2 - 20-m sprint (sec) sSIT 3.41 ± 0.24 3.21 ± 0.22* Time Effect -0.82 (-1.84 to 0.20) Moderate ↓ RT 3.42 ± 0.22 3.27 ± 0.24* 0.001 -0.62 (-1.62 to 0.39) Moderate ↓ sSIT+RT 3.43 ± 0.22 3.19 ± 0.19* Group × Time Effect -1.10 (-2.16 to -0.05) Moderate ↓ RT+sSIT 3.39 ± 0.21 3.15 ± 0.18* 0.001 -1.16 (-2.22 to -0.10) Moderate ↓ CG 3.44 ± 0.19 3.43 ± 0.19 - 4 × 9-m shuttle run (sec) sSIT 9.45 ± 0.47 9.14 ± 0.48* Time Effect -0.62 (-1.62 to 0.39) Moderate ↓ RT 9.43 ± 0.50 9.24 ± 0.52* 0.001 -0.35 (-1.34 to 0.64) Small ↓ sSIT+RT 9.47 ± 0.45 8.97 ± 0.37* Group × Time Effect -1.15 (-2.20 to -0.09) Moderate ↓ RT+sSIT 9.49 ± 0.44 9.09 ± 0.41* 0.001 -0.89 (-1.92 to -0.14) Moderate ↓ CG 9.42 ± 0.43 9.41 ± 0.41 - 1RMLP (kg) sSIT 211.2 ± 40.2 219.3 ± 39.6* Time Effect 0.19 (-0.79 to 1.17) Trivial ↑ RT 211.8 ± 41.9 231.2 ± 42.0* 0.001 0.44 (-0.55 to 1.43) Small ↑ sSIT+RT 210.0 ± 43.5 226.2 ± 46.7* Group × Time Effect 0.34 (-0.65 to 1.33) Small ↑ RT+sSIT 211.8 ± 42.2 231.5 ± 43.6* 0.001 0.43 (-0.56 to 1.43) Small ↑ CG 214.3 ± 37.1 215.6 ± 35.3 - * denotes significant differences in training groups compared with the pre-intervention value and compared with CG at post-intervention (p < 0.05). CMVJ = countermovement vertical jump, 1RMLP = one repetition maximum leg press, sSIT = short sprint interval training, RT = resistance training, CG = concurrent training.