Table 3. Descriptive statistics (mean ± standard deviation) of the main outcomes in the baseline and post-intervention.
uPJT (n = 25) bPJT (n = 25) Control (n = 25) F | p |
CMJ peak landing force (N) Pre Post 1709.5 ± 554.1 1739.7 ± 398.3 1701.4 ± 333.8 F2,72 = 0.053; p = 0.948; = 0.001
1418.2 ± 504.2 1503.3 ± 331.2 1818.5 ± 428.7 F2,72 = 6.089; p = 0.004; = 0.145
CMJ peak power (W/kg) Pre Post 41.4 ± 5.0 40.9 ± 5.0 40.7 ± 4.7 F2,72 = 0.129; p = 0.879; = 0.004
48.2 ± 6.6 45.0 ± 4.6 41.3 ± 4.3 F2,72 = 10.642; p < 0.001; = 0.228
SJ peak force (N) Pre Post 532.5 ± 109.3 568.2 ± 79.6 586.0 ± 89.2 F2,72 = 2.116; p = 0.128; = 0.056
613.8 ± 75.5 614.9 ± 51.3 560.8 ± 84.7 F2,72 = 4.624; p = 0.013; = 0.114
SJ maximum negative displacement (cm) Pre Post >38.5 ± 7.2 >37.3 ± 7.3 >35.7 ± 6.6 F2,72 = 1.020; p = 0.366; = 0.028
>33.7 ± 5.0 >34.8 ± 5.8 >37.6 ± 5.7 F2,72 = 3.269; p = 0.044; = 0.083
SLLH time to stabilization (s) Pre Post 0.54 ± 0.10 0.49 ± 0.14 0.49 ± 0.16 F2,72 = 1.519; p = 0.226; = 0.040
0.31 ± 0.07 0.39 ± 0.12 0.47 ± 0.14 F2,72 = 13.354; p < 0.001; = 0.271
SLLH peak landing force (N) Pre Post 845.9 ± 153.4 850.3 ± 154.8 903.2 ± 165.9 F2,72 = 1.015; p = 0.368; = 0.027
723.5 ± 114.6 832.6 ± 165.0 946.8 ± 175.3 F2,72 = 13.162; p < 0.001; = 0.268
CMJ: countermovement jump; SJ: squat jump; SLLH: single leg lend and hold test; uPJT: unilateral plyometric jump training; bPJT: bilateral plyometric jump training.