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Table 2 Thoracic gas volume and percent body fat by group and gender

From: Validity of new child-specific thoracic gas volume prediction equations for air-displacement plethysmography

  European American African American European
Girls N = 42 N = 23 N = 34
Measured TGV 2.12 ± 0.55 1.96 ± 0.43 2.79 ± 0.69
Percent body fat (measured TGV) 26.8 ± 9.0 23.5 ± 8.8 18.4 ± 8.1
Predicted TGV by the adult equation (L) 2.71 ± 0.42 * 2.67 ± 0.49 ** 3.20 ± 0.48**
Percent body fat (predicted adult TGV) 29.3 ± 9.3 26.8 ± 8.8 20.1 ± 8.3
TGV by the child-specific equation (L) 2.22 ± 0.46 2.19 ± 0.51 2.83 ± 0.73
Percent body fat (child-specific TGV) 27.1 ± 9.5 24.3 ± 9.1 18.5 ± 8.6
Boys N = 18 N = 20 N = 53
Measured TGV 2.24 ± 0.86 2.09 ± 0.49 4.03 ± 1.00
Percent body fat (measured TGV) 27.2 ± 10.2 25.2 ± 11.2 12.5 ± 5.6
Predicted TGV by the adult equation (L) 2.56 ± 0.70 2.34 ± 0.60 3.80 ± 0.66
Percent body fat (predicted adult TGV) 28.6 ± 10.7 26.2 ± 11.0 12.2 ± 5.9
TGV by the child-specific equation (L) 2.29 ± 0.75 2.07 ± 0.58 3.82 ± 1.04
Percent body fat (child-specific TGV) 27.4 ± 10.4 25.0 ± 11.0 11.8 ± 5.8
  1. Data are mean ± SD.
  2. Mean differences were assessed using ANOVA and Tukey's test for multiple comparisons.
  3. * p < 0.05 and is significantly different from the measured value.
  4. ** p < 0.001 and is significantly different from the measured value.
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