Table 4. Descriptive statistics (mean and standard deviation) for the LHT and 5-0-5 tests before and after the intervention period across the four groups. |
|
UT (n =
16) |
BT (n =
16) |
UBT (n
= 17) |
Control
(n = 17) |
Comparisons
between groups in pre and post evaluations
F
| p-value | Effect size |
| LHT
left (N) |
Pre |
844.3 ±
181.3 |
828.4 ±
144.7 |
861.2 ±
169.4 |
895.9 ±
152.1 |
F
= 0.526; p = 0.666; ηp2
= 0.025 |
| Post |
530.2
± 110.1b,c,d,* |
654.6
± 114.3d,* |
654.6
± 128.7d,* |
860.1
± 146.1* |
F
= 19.551; p<0.001; ηp2
= 0.486 |
| ES |
1.99 (1.63;2.35) |
1.34 (0.98;1.70) |
1.37 (1.01;1.73) |
0.24 (00.12;0.60) |
|
| %dif |
-37.2 |
-20.9 |
-24.0 |
-4.0 |
|
| LHT
right (N) |
Pre |
803.4 ±
141.6 |
831.1 ±
172.4 |
853.2 ±
207.8 |
897.7 ±
180.0 |
F
= 0.834; p = 0.481; ηp2
= 0.039 |
| Post |
511.7
± 94.4b,d,* |
671.2
± 139.0d,* |
646.4
± 148.8d,* |
884.6
± 184.0 |
F
= 18.556; p<0.001; ηp2
= 0.473 |
| ES |
2.43 (2.07;2.79) |
1.02 (0.66;1.38) |
1.15 (0.79;1.51) |
0.07 (00.29;0.44) |
|
| %dif |
-36.3 |
-19.2 |
-24.2 |
-1.5 |
|
| LHT
asymmetry (%) |
Pre |
2.58 ±
1.19 |
2.40 ±
1.11 |
2.26 ±
1.05 |
2.42 ±
0.52 |
F
= 0.267; p = 0.849; ηp2
= 0.013 |
| Post |
1.79
± 1.06d,* |
2.63
± 1.33 |
2.08
± 0.82 |
2.88
± 0.56 |
F
= 4.312; p = 0.008; ηp2
= 0.173 |
| ES |
0.70 (0.34;1.06) |
-0.19
(00.55;0.16) |
0.19 (00.17;0.55) |
-0.85
(01.21;10.49) |
|
| %dif |
-30.6 |
+9.6 |
-7.9 |
+19.0 |
|
| 5-0-5
left (s) |
Pre |
3.99 ±
0.27 |
4.01 ±
0.22 |
3.95 ±
0.27 |
4.01 ±
0.23 |
F
= 0.173; p = 0.914; ηp2
= 0.008 |
| Post |
3.58
± 0.26b,d,* |
3.84
± 0.22* |
3.76
± 2.25d,* |
4.07
± 0.23* |
F
= 12.110; p<0.001; ηp2
= 0.369 |
| ES |
1.55 (1.19;1.91) |
0.77 (0.41;1.13) |
0.12 (00.24;0.48) |
-0.26
(00.62;0.10) |
|
| %dif |
-10.3 |
-4.2 |
-4.8 |
+1.5 |
|
| 5-0-5
right (s) |
Pre |
3.80 ±
0.33 |
3.82 ±
0.20 |
3.74 ±
0.30 |
3.76 ±
0.28 |
F
= 0.267; p = 0.849; ηp2
= 0.013 |
| Post |
3.50
± 0.29d,* |
3.71
± 0.19* |
3.58
± 0.30d,* |
3.91
± 0.32* |
F
= 6.793; p<0.001; ηp2
= 0.247 |
| ES |
0.97 (0.61;1.33) |
0.56 (0.20;0.92) |
0.53 (0.17;0.89) |
-0.50
(00.86;00.14) |
|
| %dif |
-7.9 |
-2.9 |
-4.3 |
+4.0 |
|
| 5-0-5
asymmetry (%) |
Pre |
1.58 ±
1.43 |
1.50 ±
0.97 |
1.84 ±
1.51 |
2.00 ±
1.45 |
F
= 0.482; p = 0.696; ηp2
= 0.023 |
| Post |
1.00
± 1.36* |
1.28
± 0.86 |
1.59
± 1.45* |
1.91
± 1.11 |
F
= 1.695; p = 0.177; ηp2
= 0.076 |
| ES |
0.42 (0.06;0.78) |
0.24 (00.12;0.60) |
0.17 (00.19;0.54) |
0.07 (00.29;0.43) |
|
| %dif |
-36.7 |
-14.7 |
-13.6 |
-4.5 |
|
|
UT: unilateral plyometric jump training; BT: bilateral plyometric jump training; UBT: combined unilateral and bilateral plyometric jump training; LHT: single leg land and hold; ES: Effect size comparing pre- and post-measurements using Cohen’s d presented in form of mean (95% confidence interval); %dif: Percentage difference between pre- and post-measurements; |
*significant differences within-group (p < 0.05); |
b: significantly different from BT (p < 0.05); |
c: significantly different from UBT (p < 0.05); |
d: significantly different from control group (p < 0.05). |
|