Description of the eight different models included in the analyses
| Model | Expression of VO2max | In terms of linear dimensions (L) | Comment to model |
| 1 | L·min−1 | L3·L−1 thus L2 | Not scaled for body size |
| 2 | mL·min−1·kg−1 | L3·L−1·L−3 thus L−1. | The traditional scale ratio |
| 3 | mL·min−1·kg−0.67 | L3·L−1·L−2 thus L0. | Using the theoretical mass exponent of 2/3 based on dimensional analysis6 8 |
| 4 | Women: mL·min−1·kg −0.52 Men: mL·min−1·kg −0.76 | L3·L−1·L−2 thus L0. | Using sex-specific exponents derived from large population samples9 |
| 5 | mL·min−1·height−2 | L3·L−1·L−2 thus L0 | Using height as body size measure for scaling8 19 |
| 6 | mL·min−1·(kg1·height−1)−1 | L3·L−1·(L3·L−1)−1 thus L0 | |
| 7 | mL·min−1·WC−2 | L3·L−1·L−2 thus L0 | Using waist circumference and height as body size measure for scaling |
| 8 | mL·min−1·(WC3·height−1)−1 | L3·L−1·(L3·L−1)−1 thus L0 |
VO2max, maximal oxygen consumption; WC, waist circumference.