Aerobic fitness is frequently considered the most important aspect of health-related fitness. The conventionally accepted physiological criterion of aerobic fitness is maximal oxygen uptake - VO2max.
When VO2max is not directly measured, it can be estimated from performance motor tests. Although minimally a 15% prediction error exists (Bunc, 1994.
Ergonomics 37, 167-174), motor tests can be used to estimate aerobic fitness with less risk and they are particularly useful for testing large samples in a short time. In this paper, norms for the estimation of aerobic fitness and physical performance are derived from a Czech sample (1819 boys, 1479 girls), incorporating general relations between velocity of movement and energy required for this activity expressed indirectly by oxygen uptake.
The basic element of this evaluation under field conditions is the mean velocity of motion (running or walking) on a 1500 m (age lower than 11 years), and 2000 m (for older) track. The standards have been prepared for boys and girls aged 6-18 years, making it possible to estimate 'poor', 'good', and 'excellent' levels of aerobic fitness and physical performance.
The error of assessment of VO2max and thus aerobic fitness level varies by about 15%.