Table 3. Measured versus predicted V̇O2max constant error (CE) and standard deviations (SD) for subgroups of the training dataset and testing dataset.
| Subgroup | n(%) | BF% model(%) | BMI model(kg m−2) | |||
|---|---|---|---|---|---|---|
| CE | SD | CE | SD | |||
| Training set(n = 124) | ||||||
| Sex | ||||||
| Female | 80(64.5) | −0.01 | 3.95 | 0.01 | 4.45 | |
| Male | 44(35.5) | −0.02 | 6.23 | 0.01 | 5.99 | |
| Age | ||||||
| <40 years | 48(38.7) | −0.34 | 4.72 | −0.49 | 4.94 | |
| 40–50 years | 44(35.5) | 0.21 | 5.35 | 0.22 | 5.24 | |
| ≥50 years | 32(25.8) | 0.17 | 4.46 | 0.47 | 4.95 | |
| V̇O2max | ||||||
| <29 ml/kg/min | 34(27.4) | −2.77 | 3.19 | −3.13 | 3.66 | |
| 29–38 ml/kg/min | 56(45.2) | −0.22 | 4.46 | −0.22 | 4.60 | |
| ≥38 ml/kg/min | 34(27.4) | 3.09 | 5.18 | 3.51 | 4.75 | |
| Testing set(n = 42) | ||||||
| Sex | ||||||
| Female | 21(50) | −0.15 | 5.85 | −0.89 | 5.84 | |
| Male | 21(50) | 0.87 | 6.82 | 0.08 | 7.62 | |
| Age | ||||||
| <43 years | 24(57.1) | 0.67 | 6.22 | −0.07 | 6.8 | |
| ≥43 years | 18(42.9) | −0.05 | 6.55 | −0.85 | 6.79 | |
| V̇O2max | ||||||
| <35 ml/kg/min | 22(52.4) | −2.88 | 4.95 | −3.86 | 5.31 | |
| ≥35 ml/kg/min | 20(47.6) | 3.93 | 5.73 | 3.39 | 6.11 | |