Table 1. Subjects characteristics (Values are mean ± SD) *.
Groups Age
(y)		 Height
(cm)		 Body mass
(kg)		 Training
age (y)
1:3 SSIT 17.2 ± 1.4 175.6 ± 11.5 73.5 ± 7.1 2.1 ± 1.5
1:6 SSIT 17.3 ± 0.8 174.2 ± 9.7 75.8 ± 6.9 2.6 ± 1.1
1:9 SSIT 17.8 ± 1.7 178.6 ± 9.1 77.5 ± 9.2 2.5 ± 1.9
CON 17.5 ± 1.9 179.6 ± 9.3 76.1 ± 6.3 2.7 ± 1.2
*Each group consisted of 9 subjects including 4 defenders, 3 midfielders, and 2 attackers.