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## Dickson-Ruffier |

Dickson-Ruffier's Fitness Test

The Ruffier-Dickson is a test to measure aerobic fitness level. To calculate it, the following measurements are made:

`P0`

: Heart rate right before the exercise begins. It should be near to the resting heart rate.`P1`

: Heart rate just after 30 squats made in 45 seconds`P2`

: Heart rate after one minute recovery

Two indexes can then be calculated:

- The Dickson-Ruffier index is calculated using the formula: $$\frac{ (P1−70)+2\times(P2−P0) }{10}$$ A value near to 0 is excellent and near to 10 for a person totally unfit.
- The Ruffier index is calculated using the formula: $$\frac{P0 + P1 + P2 - 200}{10}$$ A value near to 0 is excellent and greater than 15 for a person totally unfit.

* Note:* for a correct computing a HRM band is necessary. The integrated optical HR is too imprecise due to its latency.

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