Table 3. Physical fitness measures from pre- to post-training for the non-randomized plyometric training group (NRG, n=6), randomized plyometric training group (RG, n=7), and control group (CONTROL, n=6).
NRG RG CONTROL ANOVA outcomes
Group F(2, 16), p-value (ES) Time F(1, 16), p-value (ES) Group x Time F(2, 16), p-value (ES)
Countermovement jump (cm)
Pre 24.1 ± 5.9 28.4 ± 8.3 26.2 ± 7.2 F=1.1, F=33.9, F=4.3,
Post 26.9 ± 5.8 # 33.5 ± 8.1 #* 27.5 ± 7.0 p=.4 (0.2) p<.001 (0.68) p<.03 (0.35)
20-cm drop jump (cm)
Pre 19.6 ± 6.5 20.6 ± 5.1 21.5 ± 4.1 F=0.3, F=75.0, F=6.3,
Post 22.0 ± 6.0 # 25.4 ± 5.9 #* 23.5 ± 3.6 p=.8 (0.04) p<.001 (0.82) p<.01 (0.44)
Sprint 30-m (s)
Pre 5.87 ± 0.51 5.71 ± 0.46 5.60 ± 0.38 F=0.7, F=121.9, F=4.6,
Post 5.48 ± 0.56 # 5.06 ± 0.52 #* 5.39 ± 0.39 p=.5 (0.09) p<.001 (0.88) p<.03 (0.37)
Sprint 30-m ball dribbling (s)
Pre 7.57 ± 1.7 7.18 ± 1.1 6.82 ± 0.9 F=0.3, F=28.6, F=4.0,
Post 6.92 ± 1.6 # 6.52 ± 1.0 #* 6.70 ± 0.8 p=.8 (0.04) p<.001 (0.64) p<.05 (0.31)
T-Test (s)
Pre 12.3 ± 1.1 12.1 ± 1.1 12.2 ± 0.9 F=0.7, F=134.8, F=8.2,
Post 11.0 ± 1.1 # 10.3 ± 0.7 #* 11.5 ± 1.1 p=.5 (0.08) p<.001 (0.89) p<.004 (0.51)
# denotes significant whiting-group improvement between the pre and post intervention period.* denotes significantly greater improvement between the pre and post intervention period in the RG compared to the other groups. ES: effect size.