The complete professional Chester Step Test resource
The Chester Step Test is a progressive, submaximal aerobic fitness assessment used to estimate cardiorespiratory capacity from the heart-rate response to stepping exercise. Developed by Professor Kevin Sykes, it provides a practical field-based option when direct laboratory measurement of VO₂max is not required.
Cartwright Fitness supports the test across protocol, software, equipment, research, training and practitioner competency.
Choose what you need
Start with the protocol and free calculator for test guidance and an individual calculation. Choose CST2 for guided professional testing and reporting, equipment for your testing setup, or training and competency for practitioner development.
Step-by-step administration, preparation, stages, heart-rate monitoring, RPE and stopping guidance.
Understand estimated VO₂max results and use reference information appropriately.
Run an individual Chester Step Test calculation without software or an account.
Guided Chester Step testing, specialist editions, calculation, records and reporting. Watch the demonstration and compare edition and test-credit options.
Steps, test kits and supporting equipment for professional Chester Step Test delivery.
Build practitioner knowledge and demonstrate consistent administration through training and competency assessment.
What does the Chester Step Test measure?
The Chester Step Test estimates aerobic capacity, commonly expressed as estimated VO₂max in ml/kg/min. It does not directly measure respiratory gases.
The estimate is derived from the participant’s response to progressively increasing stepping workloads, particularly heart rate. Because the method is indirect, protocol adherence, appropriate equipment and consistent administration matter when results are used professionally.
At a glance
Type: submaximal field assessment
Primary output: estimated aerobic capacity / estimated VO₂max
Key response: exercise heart rate
Other input: perceived exertion (RPE)
Use: professional fitness and occupational assessment where appropriate
How the test works
The participant steps on and off a fixed-height step in time with an externally controlled rhythm. The workload increases progressively. Heart rate and perceived exertion are monitored, and the participant continues until the appropriate stopping criteria are reached.
The recorded response is then used to estimate aerobic capacity. The full procedure, stage structure and practitioner guidance are covered in the dedicated protocol resource.
Official software. Direct connection to the test’s creator.
Cartwright Fitness develops the official Chester Step Test software and works directly with Professor Kevin Sykes to support and continually improve the professional use of the test.
CST2 is the dedicated software route for organisations focused specifically on the Chester Step Test. Cartwright Assess extends that workflow across a wider assessment library, bringing Assessments, Results and Competency into one professional platform.
Research, validation and appropriate interpretation
The Chester Step Test has been examined in peer-reviewed research, including validation work comparing predicted aerobic capacity with directly measured maximal oxygen uptake.
Our research section brings together the evidence, reliability considerations and important limitations of interpreting an indirect estimate. The goal is not to overstate what the test measures, but to help practitioners use it appropriately.
Interpret the result
Use the dedicated reference-data resource for context around estimated VO₂max results. Reference values can support interpretation, but they do not turn an estimated fitness result into a diagnosis.
Choose the right Chester Step Test route
I need to start testing: choose the Chester Step Test equipment range or complete test kit.
I already have equipment and need professional software: use CST2.
I want to try an individual calculation: use the free Chester Step Test calculator.
I need to train practitioners: use the practitioner programme or online training.
I need to demonstrate competency: use the practitioner competency assessment.
I need evidence or interpretation: use the research, validation and reference-data resources.
Free practitioner resources
Beyond the Chester Step Test
The Chester family also includes the Chester Cycle Test Calculator, a cycle-ergometer method for estimating aerobic capacity from staged workload and heart-rate responses.
Aerobic fitness is often only one part of a professional assessment programme. Organisations may also need strength, power, flexibility, body composition and other physical measurements.
Cartwright Assess provides the broader workflow across an assessment library, results, repeat testing, reporting and practitioner competency, while the free assessment hub connects practitioners to protocols, calculators and equipment across the wider site.