Table 4. Tests at pre- and post-time points of the groups (values are mean ± ), and percentage of change (∆) [values are mean (95% CI)].
Pre-test Post-test ∆% (95%CI) Effect size
11+ group
10m with ball (s) 8.7 (1.1) 8.1 (1.4) –0.6 (0.01 to –1.2) c 0.236
10m without ball (s) 5.6 (0.4) 5.3 (0.4) –0.3 (0.007 to –0.7) c 0.401
20msingle sprint (s) 3.1 (0.4) 2.7 (0.3) –0.3(0.003 to-0.64) c 0.392
Vertical jump (cm) 47 (6.3) 50.7(7.9) 3.7(6.3 to 1.2) b 0.254
Wall volley test (points) 31.7 (1.3) 37.2(0.7) 5.4(7.8 to 3.0) a 0.590
Illinois (s) 16.2 (0.3) 14.4(0.3) –1.7 (-0.8 to –2.6) b, c 0.645
HarmoKnee group
10m with ball (s) 8.5 (1.01) 8.1 (0.8) –0.4 (0.9 to –0.1) c 0.239
10m without ball (s) 5.3 (0.5) 5.5 (0.6) 0.2(0.6 to –0.1) c 0.194
20msingle sprint (s) 2.93 (0.3) 2.88(0.3) –0.05(-0.05 to 0.1) c 0.101
Vertical jump (cm) 50.2 (6.8) 51.9 (4.3) 1.6(3.7 to –0.4) 0.143
Wall volley test (points) 30.7 (1.4) 35.8 (3.2) 5.2(2.3 to 8.1) b 0.533
Illinois (s) 16 (0.1) 15.5 (0.2) –0.4 (0.05 to –0.9) c 0.344
Control group
10m with ball (s) 9.1 (1.4) 9.8 (1.6) 0.6(-1.5 to 0.27) 0.239
10m without ball (s) 5.7 (0.6) 6.1 (0.5) 0.3(-0.7 to 0.01) 0.295
20m single sprint (s) 3.1 (0.1) 3.2 (0.1) –0.06(0.13 to –0.01) 0.217
Vertical jump (cm) 46.6(5.4) 48.9 (7.6) 2.3(5.2 to –0.56) 0.211
Wall volley test (points) 32.3(3.5) 31.6 (3.8) –0.7 (2.1 to –3.6) 0.102
Illinois (s) 16.5(1.2) 16.9 (1.2) 0.5(-1.4 to 0.4) 0.205
Legend: s=second, m=meter; cm=centimetre, CI=confidence intervala= significant difference between pre-to-post time points (p < 0.001)b= significant difference between pre-to-post time points (p<0.01)c= significant difference with control group (p < 0.05).