A VO2 max test involves intense physical exertion. Before undertaking any test of physical exertion, consider if the test would be safe for you to perform by completing a physical readiness questionnaire.
If you answer ‘yes’ to any of the included questions, consult your doctor before undergoing physical performance testing. You can estimate your VO2 max without undergoing testing using this method.
Estimating VO2 max using a watt bike
The easiest way to estimate your VO2 max using a watt bike is the Sub-maximal ramp test
This is a pre-programmed test involving cycling at an escalating intensity until you reach peak oxygen consumption. Just select sub-maximal ramp from the menu to get started. Full instructions are available here: https://wattbike.com/gb/performance-tests/the-submaximal-ramp-test
Once you complete the test, the watt bike display will show your calculated VO2 max based on your performance.