Table 1: Characteristics of the participants (n=57).

Total Girls (n=15) Boys (n=42)
Age (year) 11 (2)a 10 (1)a 12 (2)a
Height (cm) 151 (15)a 142 (8)a 154 (15)a
Weight (kg) 42 (13)a 33 (7)a 46 (13)a
Training hours / week 3.57 (1) a 2.97 (1) a 3.79 (1) a

a standard deviation