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 standard measure of endurance and cardiorespiratory capacity. Unlike laboratory stress tests, it needs little equipment: a treadmill with adjustable incline and a timer.
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.