Table 2.
Descriptive participant characteristics by BMI category.
| Boys (n = 177) | Girls (n = 155) | Combined (n = 332) | |
|---|---|---|---|
| Body mass index | |||
| Underweight | 15.94 ± 1.94 a | 16.16 ± 1.72 a | 15.98 ± 1.83 |
| Normal weight | 19.32 ± 2.02 b | 20.26 ± 4.60 a | 19.77 ± 2.16 |
| Overweight | 23.82 ± 1.67 c | 26.66 ± 1.56 b | 24.72 ± 1.85 |
| Obese | 29.61 ± 2.21 d | 28.62 ± 3.69 c | 29.19 ± 2.87 |
| Body fat percentage | |||
| Underweight | 12.72 ± 3.14 a | 19.20 ± 1.41 a | 13.80 ± 3.82 |
| Normal weight | 14.18 ± 4.51 a | 24.60 ± 4.60 a | 19.17 ± 6.93 |
| Overweight | 23.57 ± 7.40 b | 32.49 ± 5.36 b | 27.94 ± 7.88 |
| Obese | 31.17 ± 9.51 c | 37.14 ± 6.10 b | 33.68 ± 8.59 |
| Fat Mass Index (kg/m2) | |||
| Underweight | 1.98 ± 0.36 a | 3.11 ± 0.56 a | 2.17 ± 0.57 |
| Normal weight | 2.74 ± 1.02 a | 5.03 ± 1.28 a | 3.84 ± 1.62 |
| Overweight | 5.58 ± 1.69 b | 8.37 ± 1.70 b | 6.94 ± 2.19 |
| Obese | 9.17 ± 2.73 c | 10.72 ± 2.54 c | 9.82 ± 2.70 |
| Fat-free mass index (kg/m2) | |||
| Underweight | 13.96 ± 2.18 a | 13.04 ± 1.17 a | 13.81 ± 2.04 |
| Normal weight | 16.57 ± 1.81 b | 15.23 ± 1.52 a | 15.92 ± 1.80 |
| Overweight | 18.24 ± 2.44 c | 17.28 ± 1.25 b | 17.77 ± 1.99 |
| Obese | 20.43 ± 3.67 d | 17.89 ± 2.05 b | 19.36 ± 3.28 |
a, b, c, d = values with the same letters in each group and sex were not significantly different. Values with different letters in each group and sex were significantly different (p < 0.05). Underweight (<5th percentile rank); normal weight (5th to <85th percentile rank); overweight (85th to <95th percentile rank); obese (≥95th percentile rank).