# Léger shuttle

> 1988

- Equation: `VO2max = 31.025 + 3.238X - 3.248A + 0.1536AX`
- Variables:
  - `X`: Speed of the last completed stage, km/h. X = 8 + 0.5 × level.
  - `A`: Age in years for ages 8–17. Held at 18 for adults.
  - `VO2max`: Estimated maximal oxygen uptake, ml/kg/min.
- Authors: Léger, L. A.; Mercier, D.; Gadoury, C.; Lambert, J.
- Source: Journal of Sports Sciences
- DOI: [10.1080/02640418808729800](https://doi.org/10.1080/02640418808729800)

20 m shuttle, 1-minute stages starting at 8.5 km/h, plus 0.5 km/h each minute. The 1982 Léger–Lambert paper used 2-minute stages and a different regression; this card is the 1988 protocol.