| |
Composite (n = 249)
|
Males (n = 179)
|
Females (n = 70)
|
Outliers (n = 16)
|
|---|
|
Age (y)
|
12.0 ± 2.1 (n = 249)
|
12.0 ± 2.1 (n = 179)
|
12.0 ± 2.2 (n = 70)
| |
|
Maturity Offset (y)
|
−1.3 ± 1.9 (n = 249)
|
−1.7 ± 1.7 (n = 179)*
|
−0.1 ± 1.8 (n = 70)
| |
|
Height (cm)
|
155.2 ± 13.6 (n = 249)
|
156.3 ± 13.9 (n = 179)*
|
152.4 ± 12.3 (n = 70)
| |
|
Weight (kg)
|
48.0 ± 16.0 (n = 249)
|
49.1 ± 16.5 (n = 179)
|
45.3 ± 14.5 (n = 70)
|
120.6 kg
|
|
Body Fat (%)
|
20.2 ± 6.5 (n = 244)
|
19.7 ± 6.7 (n = 175)
|
21.5 ± 5.9 (n = 69)
|
47.9%
|
|
Arm eCSA (cm2)
|
14.3 ± 6.9 (n = 246)
|
15.6 ± 7.3 (n = 176)*
|
11.2 ± 4.6 (n = 70)
|
45.74 cm2
|
|
Thigh eCSA (cm2)
|
80.6 ± 31.5 (n = 245)
|
83.3 ± 33.0 (n = 175)*
|
73.7 ± 26.3 (n = 70)
| |
|
Vertical Jump (cm)
|
40.2 ± 9.4 (n = 246)
|
41.7 ± 9.6 (n = 177)*
|
36.4 ± 7.4 (n = 69)
| |
|
Broad Jump (cm)
|
168.6 ± 30.2 (n = 247)
|
172.9 ± 30.6 (n = 178)*
|
157.3 ± 26.2 (n = 69)
| |
|
Pro-Agility (s)
|
5.8 ± 0.6 (n = 247)
|
5.7 ± 0.6 (n = 177)*
|
5.9 ± 0.5 (n = 70)
|
8.76 s
|
|
L Cone (s)
|
9.4 ± 0.9 (n = 245)
|
9.3 ± 1.0 (n = 176)*
|
9.7 ± 0.8 (n = 69)
|
15.0 s
|
|
20 Yard Dash (s)
|
3.7 ± 0.5 (n = 248)
|
3.7 ± 0.5 (n = 178)a
|
3.8 ± 0.4 (n = 70)
|
5.98, 6.79 s
|
|
Power Push Up (N)
|
170.6 ± 84.1 (n = 246)
|
185.5 ± 90.0 (n = 177)*
|
132.6 ± 51.3 (n = 69)
|
583, 601 N
|
|
Energy Intake (kcals·d− 1)
|
2052 ± 711 (n = 97)
|
2158 ± 749 (n = 66)*
|
1827 ± 568 (n = 31)
| |
|
Carbohydrates (g·d− 1)
|
244 ± 89 (n = 97)
|
256 ± 89 (n = 66)*
|
217 ± 83 (n = 31)
| |
|
Protein (g·d− 1)
|
90 ± 38 (n = 97)
|
98 ± 41 (n = 66)*
|
74 ± 25 (n = 31)
| |
|
Fat (g·d−1)
|
82 ± 37 (n = 97)
|
84 ± 39 (n = 66)
|
76 ± 34 (n = 31)
| |
|
Iron (mg·d− 1)
|
16.5 ± 9.7 (n = 97)
|
17.9 ± 10.9 (n = 66)*b
|
13.5 ± 5.5 (n = 31)
|
46.0, 44.8, 55.0, 62.0 mg·d− 1
|
|
Hemoglobin (g·L− 1)
|
113 ± 16 (n = 128)
|
114 ± 16 (n = 100)
|
112 ± 19 (n = 28)
| |
|
Ferritin (μg·L− 1)
|
24.0 ± 15.0 (n = 118)
|
25.3 ± 16.2 (n = 94)*
|
18.6 ± 7.3 (n = 24)
| |
|
sTfR (nmol·L− 1)
|
22.1 ± 6.4 (n = 105)
|
21.9 ± 6.8 (n = 76)
|
22.8 ± 5.5 (n = 29)
|
38.8, 44.5, 66.7 nmol·L− 1
|
- Values are means ± standard deviations (SD)
- *Indicates a significant difference between the mean values of males versus females (p ≤ 0.05) with outliers included
- aIndicates a significant difference after removal of outliers. bIndicates difference became non-significant after removal of outliers
