Table 2 Description of the study sample by class and sex
3rdclass (N = 172) | 4thclass (N = 172) | 5thclass (N = 172) | 6thclass (N = 172) | |||||
|---|---|---|---|---|---|---|---|---|
Boys (n = 103) | Girls (n = 69) | Boys (n = 103) | Girls (n = 69) | Boys (n = 103) | Girls (n = 69) | Boys (n = 103) | Girls (n = 69) | |
Characteristic | ||||||||
Age (yr) | 9.4 (0.4)* | 9.2 (0.4) | 10.3 (0.4)* | 10.2 (0.4) | 11.4 (0.5)* | 11.2 (0.3) | 12.4 (0.4)* | 12.2 (0.4) |
Height (cm) | 139.8 (5.9)* | 136.9 (6.4) | 143.6 (6.2)* | 141.6 (6.9) | 150.0 (6.8) | 148.8 (7.7) | 156.2 (7.7) | 154.9 (7.6) |
Mass (kg) | 32.0 (5.0) | 31.6 (5.9) | 35.9 (6.0) | 35.9 (7.8) | 40.6 (7.4) | 40.7 (10.1) | 45.7 (8.6) | 45.8 (11.2) |
BMI (kg/m2) | 16.4 (2.1) | 16.8 (2.4) | 17.4 (2.4) | 17.8 (3.0) | 18.0 (2.5) | 18.2 (3.4) | 18.6 (2.6) | 19.0 (3.7) |
Fitness test | ||||||||
50-m sprint (s) | 9.6 (0.8) | 9.9 (0.8) | 9.2 (0.8)* | 9.5 (0.9) | 8.9 (0.8) | 9.1 (0.8) | 8.7 (0.8) | 8.9 (0.8) |
1-kg ball push (m) | 7.82 (1.4)* | 6.33 (1.4) | 9.09 (1.6)* | 7.61 (1.3) | 10.76 (2.0)* | 8.93 (1.9) | 11.78 (2.3)* | 9.8 (2.2) |
Triple hop (m) | 7.76 (1.2)* | 7.30 (1.1) | 8.51 (1.2)* | 8.04 (1.2) | 9.29 (1.3)* | 8.81 (1.2) | 9.97 (1.4)* | 9.5 (1.4) |
SaR (cm) | 96.5 (7.8)* | 100.7 (7.2) | 96.6 (8.1)* | 100.6 (7.2) | 95.3 (8.5)* | 101.6 (7.4) | 96.0 (8.3)* | 103.9 (7.8) |
Star run (s) | 22.9 (3.3) | 23.6 (2.3) | 20.8 (2.0)* | 21.8 (1.9) | 19.5 (2.0)* | 20.4 (1.8) | 18.6 (1.8)* | 19.3 (1.7) |
9-min run (m) | 1499.5 (193.1)* | 1343.4 (168.3) | 1587.9 (255.2)* | 1417.1 (213.9) | 1629.2 (235.9)* | 1455.8 (177.9) | 1610.4 (254.7)* | 1463.3 (229.3) |