Table 1.
Study subject characteristics (n = 82).
| Total | Males | Females | P-value† | |
|---|---|---|---|---|
| Descriptive characteristics | ||||
| Number | 82 | 34 | 48 | |
| Age (years) | 13.0 ± 0.7 | 13.1 ± 0.7 | 12.9 ± 0.7 | .5028 |
| Height (cm) | 162.8 ± 7.7 | 162.2 ± 8.2 | 163.3 ± 7.3 | .2958 |
| Weight (kg) | 65.0 ± 19.7 | 67.5 ± 19.9 | 63.3 ± 19.5 | .3094 |
| Obese (BMI ≥ 95th percentile) | 26 (32%) | 17 (50%) | 9 (19%) | .0027* |
| Body composition assessments | ||||
| BMI | 24.4 ± 6.5 | 25.5 ± 6.6 | 23.5 ± 6.3 | .2193 |
| BMI z score | 1.0 ± 1.1 | 1.2 ± 1.2 | 0.8 ± 1.1 | .1163 |
| Percent body fat | 28.8 ± 8.6 | 28.3 ± 10.9 | 29.0 ± 6.7 | .7775 |
| Lean body mass (kg) | 37.41 ± 8.86 | 39.47 ± 9.12 | 36.00 ± 8.48 | .0778 |
| CVF assessments | ||||
| VO2 max (mL/kg/min) | 40.4 ± 9.4 | 43.4 ± 11.3 | 38.3 ± 7.1 | .0239* |
| VO2 max/kgLBM (mL/kg/min) | 67.8 ± 8.2 | 71.0 ± 7.1 | 65.5 ± 8.2 | .0033* |
| PACER (laps) | 25.2 ± 15.1 | 27.7 ± 17.7 | 23.5 ± 12.8 | .2446 |
| PACER speed (km/h) | 9.4 ± 0.8 | 9.5 ± 0.9 | 9.3 ± 0.7 | .2505 |
| Estimated VO2 max (mL/kg/min) [12] | 37.9 ± 4.5 | 38.4 ± 4.9 | 37.5 ± 4.2 | .3740 |
| IR assessments | ||||
| Fasting insulin (μIU/mL) | 15.0 ± 8.0 | 15.2 ±9.5 | 14.9 ± 6.8 | .8419 |
| Fasting glucose (mg/dL) | 92.8 ± 6.8 | 95.3 ± 6.5 | 91.2 ± 6.5 | .0071* |
| HOMAIR | 3.5 ± 1.9 | 3.7 ± 2.3 | 3.4 ± 1.6 | .2766 |
†Comparison between males and females.
*P < .05.