Balke Test
Developed by Bruno Balke in the 1960s, this test assesses cardiorespiratory capacity and VO2max through walking at a progressively increasing incline on a treadmill.
About the Balke test
This protocol estimates maximal oxygen uptake (VO2max), the key measure of endurance and cardiorespiratory capacity. Unlike more complex and expensive stress tests, it can be done with minimal equipment.
How the test works
The participant walks at a comfortable, constant speed (5 km/h) while the treadmill incline rises by 1% every two minutes. This progressively pushes the cardiorespiratory system towards its limits.
Calculator
Calculate your VO2max
Formula: VO2max = 1.44 × time sustained (in minutes) + 14.99.
Doing the test yourself
Equipment needed:
- A treadmill with adjustable incline
- A watch or timer to time the test
- A notebook or app to record distance, time and heart rate
- A heart rate monitor (optional but recommended)
Protocol
How the test unfolds
- Warm upLight walking for 5 to 10 minutes to prepare your muscles and cardiovascular system.
- Initial settingSet the treadmill to a 1% incline and a moderate speed of 5 km/h.
- ProgressionEvery two minutes, increase the incline by 1% without increasing the speed.
- End of the testContinue until exhaustion or until you can no longer keep the pace. Note the total elapsed time.
Recommended gear
To run the test in good conditions
- Folding treadmill View on Amazon →
- Heart rate monitor View on Amazon →
- Running shoes View on Amazon →
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Frequently asked questions
FAQ
Can you do this test without an inclining treadmill?
The original protocol uses a treadmill with adjustable incline. On a flat surface, the formula coefficients would need adjusting. The version presented here matches the standard treadmill protocol.
What are the limits of this test?
It is less precise than a laboratory stress test with respiratory gas analysis, and self-administration can introduce errors if the instructions are not followed strictly.
Who is the Balke test for?
It is accessible to a wide population, including people unaccustomed to intense efforts, and is used in both sports and clinical settings.
Is the Balke test dangerous for beginners?
It remains a progressive, submaximal effort, so it is generally safe, but anyone untrained or with any doubt about their cardiovascular health should see a doctor before attempting it.