Table 2.  Effects of age for anthropometrical, hormone profile, physical fitness, general perceptual motor skill, soccer skill and soccer-specific laboratory test variables.
   

Main Effect

Between age groups (p<)

   

F(2,33)

p<

η2

10y-12y

12y-14y

10y-14y

Anthropometrics

Height (m)

22.604

.001

.57

.01

.01

.001

 

Weight (kg)

27.937

.001

.63

.01

.01

.001

 

Fat (%)

1.203

ns.

.07

-

-

-

 

Muscle Mass (kg)

30.866

.001

.65

.01

.001

.001

Hormone Profile

Testosterone (nmol/l)

31.778

.001

.66

.001

.01

.001

Physical Fitness

10m (s)

21.639

.001

.57

ns.

.001

.001

 

Agility (s)

14.023

.001

.46

.05

.05

.001

 

CMJ (cm)

13.903

.001

.46

ns.

.01

.001

General Perceptual Motor Skills

PAT (s)

1.555

ns.

.09

-

-

-

 

EHF (times/30s)

21.371

.001

.56

.001

ns.

.001

Soccer Skills

Dribbling (s)

12.102

.001

.42

ns.

.01

.001

 

Passing (s)

12.623

.001

.43

.05

.05

.001

 

∑ Skill (s)

13.407

.001

.45

ns.

.01

.001

Soccer-Specific Laboratory Test

Time (s)

3.378

.05

.17

ns.

ns.

.05

 

Anticipation (s)

15.012

.001

.48

ns.

.01

.001

 

Dribbling (s)

1.087

ns.

.06

-

-

-

 

Reaction (s)

2.895

ns.

.15

-

-

-

 

Aiming (s)

1.581

ns.

.09

-

-

-

 

Passing (s)

11.402

.001

.41

.05

ns.

.001

 

Accuracy (penalty pts.)

2.504

ns.

.15

-

-

-

CMJ = counter movement jump, PAT = peripheral awareness, EHF = Eye-Hand-Foot Coordination