Experimental group

Significance

Girls

Boys

(n = 305)

(n = 456)

t

P

Global self-esteem

37.82 ± 2.52^***

24.70 ± 2.44

71.30

<0.001

Physical value

15.05 ± 1.25

21.86 ± 1.38^***

138.97

<0.001

Strength

11.91 ± 3.93

13.44 ± 1.21^***

6.59

<0.001

Endurance

16.10 ± 1.56

17.18 ± 1.57^***

13.703

<0.001

Sportive competence

19.54 ± 1.74^***

15.83 ± 4.34

16.40

<0.001

Demotivation

10.20 ± 1.26^***

7.93 ± 1.25

11.76

<0.001