Yo-Yo Test Formula

These are the formula used for the yo-yo test calculators.

Yo-Yo Intermittent Recovery Test Level 1 (YYIR1)

You can use the YYIR1 calculator to work out the VO_2max, or use this conversion chart, based on the same formula (Bangsbo et al. 2008), which is:

VO_2max (ml/min/kg) = distance run (m) × 0.0084 + 36.4

Yo-Yo Intermittent Recovery Test Level 2 (YYIR2)

You can use the YYIR2 calculator to work out the VO_2max, or use this conversion chart, based on the same formula (Bangsbo et al. 2008), which is:

VO_2max (ml/min/kg) = distance run × 0.0136 + 45.3

 

Reference: Jens Bangsbo, F. Marcello Iaia and Peter Krustrup, (2008) The Yo-Yo Intermittent Recovery Test: A Useful Tool for Evaluation of Physical Performance in Intermittent Sports, Sports Medicine 2008; 38 (1): 37-51.

 

There has been another prediction equation published. Using the total distance covered in the Yo-Yo IRT1, the VO2max of amateur 15-a-side rugby union players could be estimated through the equation:

VO_2max (ml/min/kg) = distance run × 0.016 + 40.578.

Reference: Sant'anna RT, de Souza Castro FA. Aerobic power and field test results of amateur 15-a-side rugby union players. J Sports Med Phys Fitness. 2017 Dec;57(12):1605-1612

More Resources

• Yo-Yo Test Calculators
• List of Yo-Yo Test Resources.
• Conversion of Yo-Yo Endurance Test Results to VO_2max
• You may also be interested in the Data Tables for all Yo-Yo Test Versions
• Buying the Yo-Yo Test

 

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