Table 1. Characteristics of the participants in each age category. Data are means (±SD).
Category Age
(months)		 Weight
(kg)		 Height
(m)		 Time competitions
(months of experience)
U13 163.0 (5.7) 47.5 (7.8) 1.50 (.15) 24.0 (33.9)
U15 180.0 (6.9) 51.3 (3.9) 1.7 (.12) 81.0 (24.7)
U17 205.0 (11.5) 66.6 (7.1) 1,8 (.10) 79.2 (33.5)
U20 224.0 (7.6) 71.2 (4.8) 1.80 (.13) 96.0 (39.8)