The result of the cardio test is calculated on the basis of the wattage of the device and the member's subjective perception of exertion.

This is a step load test where within 12 steps the member has to indicate their own effort perception with numbers from 1-10. (1 = minimum effort, 10 = maximum effort).

The test is started with the member's fitness level, which is questioned in advance. According to this, the test is adjusted with its watt intensity.

One level lasts 60 seconds and is followed by a question on how the member feels. As soon as the member indicates his or her own load as over 8, the test is automatically ended and the result is calculated. The result of the cardio fitness is then displayed in VO2max (max. oxygen uptake in ml per kg body weight, per minute).

It is important to note that this is an estimated VO2max value. The VO2max value can only be measured with relatively great effort with the help of a respiratory gas analysis. However, studies show a close correlation between the subjective feeling of exertion and the VO2max value, so this method represents real cardio fitness quite well, even without the use of cost-intensive performance diagnostics.