The Watt-max test is a maximal test conducted on a bicycle ergometer. It is one of the best indirect tests of VO2max available.
1. Start on a workload of 35 watt and increase with 35 watt every 2nd minute.
2. Continue untill the workload can no longe be maintained.
3. Note the highest workload reached and how many seconds you managed on this workload.
The energy cost for doing bicycling at any given workload is fairly consistent among different individuals. Therefore maximal oxygen consumption can be estiamted by measuring the highest workolad that can be performed under reasonable aerobic conditions.