Table 2.
Changes in athletic performance following bilateral combined plyometric and strength training (n = 9) or unilateral combined plyometric and strength training (n = 9). Data are mean ± SD.
| Bilateral (n = 9) | Unilateral (n = 9) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pre-test | Post-test | % (CL90%) | ES (CL90%) | Chances | Outcome | Pre-test | Post-test | % (CL90%) | ES (CL90%) | Chances | Outcome | |
| 1RM_KE (kg) | 207.9 ± 30.2 | 237.2 ± 51.0* | 12.9 (7.4; 18.6) | 0.77 (0.46; 1.09) | 100/0/0% | Most Likely | 179.8 ± 9.1 | 182.4 ± 8.4* | 1.5 (0.4; 2.6) | 0.27 (0.07; 0.47) | 73/27/0% | Possibly |
| 1RM_KF (kg) | 93.8 ± 11.2 | 99.8 ± 10.2* | 6.6 (2.2; 11.2) | 0.48 (0.16; 0.80) | 93/7/0% | Likely | 86.5 ± 2.9 | 86.8 ± 2.9 | 0.3 (−0.3; 1.0) | 0.09 (−0.08; 0.25) | 12/87/1% | Likely trivial |
| COD (s) | 5.67 ± 0.29 | 5.46 ± 0.20* | 3.7 (1.3; 6.0) | 0.66 (0.23; 1.09) | 96/4/0% | Very Likely | 5.80 ± 0.29 | 5.67 ± 0.16 | 2.2 (−0.7; 5.1) | 0.41 (−0.13; 0.96) | 76/21/4% | Likely |
| CMJ (m) | 0.37 ± 0.05 | 0.40 ± 0.05* | 8.6 (4.2; 13.1) | 0.56 (0.28; 0.84) | 98/2/0% | Very Likely | 0.38 ± 0.04 | 0.40 ± 0.05 | 5.2 (−0.8; 11.6) | 0.51 (−0.08; 1.11) | 82/15/3% | Likely |
| CMJd (m) | 0.22 ± 0.03 | 0.22 ± 0.03 | 2.8 (0.1; 5.6) | 0.18 (0.01; 0.35) | 41/59/0% | Possibly | 0.23 ± 0.03 | 0.26 ± 0.03* | 10.0 (6.9; 13.1) | 0.85 (0.59; 1.10) | 100/0/0% | Most Likely |
| CMJnd (m) | 0.20 ± 0.03 | 0.20 ± 0.02 | 2.7 (−0.5; 6.0) | 0.19 (−0.03; 0.42) | 47/52/1% | Possibly | 0.22 ± 0.02 | 0.24 ± 0.03* | 6.4 (2.1; 10.9) | 0.50 (0.17; 0.83) | 93/6/0% | Likely |
| LSI_CMJ (%) | 90.8 ± 4.6 | 90.7 ± 4.8 | −0.1 (−4.0; 3.8) | −0.02 (−0.71; 0.66) | 28/40/32% | Unclear | 91.9 ± 6.3 | 91.1 ± 6.8 | −0.8 (−3.2; 1.6) | −0.11 (−0.42; 0.20) | 5/65/30% | Possibly harmful |
| SJ (m) | 0.35 ± 0.05 | 0.37 ± 0.04* | 6.5 (2.6; 10.6) | 0.36 (0.15; 0.58) | 90/10/0% | Likely | 0.36 ± 0.05 | 0.34 ± 0.04 | −6.0 (−12.8; 1.2) | −0.45 (−0.99; 0.09) | 3/18/79% | Likely harmful |
| SJd (m) | 0.21 ± 0.03 | 0.21 ± 0.03 | 1.1 (−1.4; 3.6) | 0.08 (−0.11; 0.26) | 12/87/1% | Likely trivial | 0.22 ± 0.02 | 0.24 ± 0.02* | 8.1 (3.1; 13.2) | 0.64 (0.25; 1.02) | 97/3/0% | Very Likely |
| SJnd (m) | 0.18 ± 0.02 | 0.19 ± 0.02 | 3.1 (−0.1; 6.5) | 0.26 (−0.01; 0.53) | 66/33/1% | Possibly | 0.22 ± 0.03 | 0.23 ± 0.03* | 4.8 (1.3; 8.5) | 0.35 (0.09; 0.60) | 84/15/0% | Likely |
| LSI_SJ (%) | 87.7 ± 7.9 | 88.6 ± 9.2 | 1.0 (−1.3; 3.3) | 0.09 (−0.13; 0.32) | 20/78/2% | Likely trivial | 91.5 ± 8.4 | 89.8 ± 3.1 | −1.5 (−6.3; 3.6) | −0.14 (−0.61; 0.33) | 11/48/41% | Possibly harmful |
| H3Jd (m) | 6.49 ± 0.30 | 6.53 ± 0.28 | 0.5 (−0.2; 1.2) | 0.10 (−0.04; 0.24) | 11/89/0% | Likely trivial | 6.19 ± 0.32 | 6.62 ± 0.31* | 7.1 (3.7; 10.5) | 1.21 (0.64; 1.78) | 99/0/0% | Very Likely |
| H3Jnd (m) | 6.29 ± 0.30 | 6.29 ± 0.31 | 0.0 (−0.4; 0.3) | −0.01 (−0.07; 0.05) | 0/100/0% | Most Likely trivial | 5.97 ± 0.33 | 6.35 ± 0.34* | 6.4 (2.7; 10.3) | 0.99 (0.42; 1.55) | 98/1/0% | Very Likely |
| LSI_H3J (%) | 96.8 ± 4.2 | 96.1 ± 3.9 | −0.7 (−1.4; 0.0) | −0.14 (−0.28; 0.00) | 0/78/22% | Likely trivial | 96.5 ± 2.8 | 95.2 ± 3.3 | −1.4 (−3.8; 1.1) | −0.43 (−1.20; 0.34) | 8/21/71% | Possibly harmful |
| HC3Jd (m) | 5.62 ± 0.40 | 5.70 ± 0.39 | 1.5 (−1.9; 4.9) | 0.17 (−0.23; 0.57) | 45/49/6% | Unclear | 5.66 ± 0.42 | 5.98 ± 0.38* | 5.8 (1.7; 10.0) | 0.65 (0.20; 1.10) | 95/5/0% | Likely |
| HC3Jnd (m) | 5.49 ± 0.47 | 5.71 ± 0.71 | 4.0 (−0.8; 9.1) | 0.39 (−0.08; 0.87) | 76/21/2% | Likely | 5.28 ± 0.56 | 5.70 ± 0.45* | 8.2 (2.1; 14.6) | 0.64 (0.17; 1.11) | 94/6/0% | Likely |
| LSI_HC3J (%) | 95.6 ± 1.6 | 95.7 ± 2.4 | 0.1 (−1.7; 1.9) | 0.04 (−0.95; 1.03) | 39/28/33% | Unclear | 93.3 ± 5.9 | 95.3 ± 3.8 | 2.2 (−2.5; 7.2) | 0.30 (−0.34; 0.94) | 61/30/9% | Unclear |
| HCMJ (m) | 2.24 ± 0.08 | 2.34 ± 0.07* | 4.5 (2.5; 6.5) | 1.17 (0.67; 1.67) | 100/0/0% | Most Likely | 2.20 ± 0.15 | 2.21 ± 0.15 | 0.7 (0.1; 1.3) | 0.09 (0.01; 0.17) | 2/98/0% | Very unlikely |
| H3CMJ (m) | 6.56 ± 0.58 | 6.65 ± 0.56* | 1.3 (0.5; 2.2) | 0.13 (0.05; 0.21) | 8/92/0% | Unlikely | 6.67 ± 0.58 | 6.84 ± 0.52 | 2.7 (−2.1; 7.6) | 0.28 (−0.23; 0.79) | 62/33/6% | Unclear |
1RM_KE, one-repetition maximum in knee extensors; 1RM_KF, one-repetition maximum in knee flexors; COD, modified agility test; CMJ, bilateral countermovement jump; CMJd and CMJnd, unilateral countermovement jump with dominant and non-dominant leg; LSI_CMJ, limb symmetry index in unilateral countermovement jump; SJ, bilateral squat jump; SJd and SJnd, unilateral squat jump with dominant and non-dominant leg; LSI_SJ, limb symmetry index in unilateral squat jump H3Jd and H3Jnd, horizontal triple jump with dominant and non-dominant leg; LSI_H3J, limb symmetry index in unilateral horizontal triple jump; HC3Jd and HC3Jnd, crossover horizontal triple jump with dominant and non-dominant leg; LSI_HC3J, limb symmetry index in unilateral crossover triple jump; HCMJ, bilateral horizontal jump with arm swing; H3CMJ, triple bilateral horizontal jump with arm swing. Significant differences (p < 0.05) between pre-test to post-test were indicated with *.