Table 3 Group-specific baseline and posttest performances after 8 weeks of in-season plyometric jump training on components of physical fitness in prepuberal soccer players

CMJ (cm)

25.97

3.99

26.33

4.62

-0.36 (-3.79 to 3.07)

0.83

30.52

0.61

26.36

0.58

4.16 (2.41 to 5.91)

 < 0.0001 (2.00)

SLJ (cm)

169.3

1

15.04

174.4

3

16.36

-5.12 (-17.60 to 7.36)

0.40

187.6

0

2.82

174.5

0

2.71

13.09 (4.95 to

21.23)

 < 0.01 (1.36)

SHTD-D

(cm)

161.9

2

13.57

159.8

6

13.06

2.06 (-9.42 to 13.55)

0.71

176.4

2

2.98

161.3

8

2.87

15.03 (6.46 to

23.61)

0.001 (1.48)

SHTD-ND

(cm)

167.6

9

12.47

162.6

4

12.42

4.74 (-5.08 to 14.56)

0.33

177.5

2

2.05

163.8

7

1.97

13.65 (7.69 to

19.61)

0.001 (1.93)

505 CoD (s)

2.60

0.14

2.68

0.11

-0.07 (-0.16 to 0.02)

0.13

2.46

0.04

2.64

0.03

-0.18 (-0.29 to -0.06)

 < 0.01 (1.30)

Asymmetry score (%)

8.11

12.47

4.72

2.75

4.15 (0.80 to 7.50)

0.01

3.36

1.10

6.68

1.06

3.32 (-6.68 to 0.27)

 < 0.05 (0.84)