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Chester Step Test. What it measures, and how to prepare.

The Chester Step Test is a fitness test that many people in wind and offshore are asked to take. Here is what it is used for, who sets the requirement, and what you can do beforehand.

What is the Chester Step Test?

The Chester Step Test is a fitness test in which you step up and down on a step in time with an audio signal, while the pace increases in stages. The Danish Maritime Authority describes it as a reproducible method that gives insight into your cardiovascular capacity, physical ability and endurance.

Book the Chester Step Test

Chester Step Test on its own DKK 750. The package GWO Wind OEUK with Chester Step Test DKK 2,330. Prices incl. VAT.

Book Chester Step TestBook OEUK + Chester

Need an appointment today? Call +45 70 60 33 38.

Who requires it?

The requirement usually comes from the employer or operator. The Global Wind Organisation (GWO) makes no requirements for a medical assessment and says it is the employer who decides which examinations you need. That also goes for the result required, so ask whoever asks for the test.

For seafarers on Danish ships, the Danish Maritime Authority's rules mention the Chester Step Test as a possible test when a seafarer has a BMI above 40. The test cannot on its own be the basis for being found unfit, it must be part of an overall assessment. When the test is done under those rules, the shipowner pays.

How it works at our clinic

Short check first

We measure blood pressure and resting pulse and make sure you can do the test safely.

The test itself

You step in time with an audio signal, the pace increases in levels, and your pulse is recorded throughout.

Result straight away

Your oxygen uptake is calculated from pulse and workload, and you get the result before you leave.

Bring training clothes and indoor shoes with good grip. If you also need a certificate, both can be done in one visit, for example with the package GWO Wind OEUK m. Chester Step test.

How to prepare

The best preparation is ordinary fitness over time. The Danish Health Authority recommends that adults are physically active for at least 30 minutes every day, so you get slightly out of breath to out of breath, and do muscle-strengthening activities at least twice a week.

The day before and on the day, the same advice applies as for a medical: arrive rested, skip hard training and alcohol the day before, and do not eat a large meal just before. See how to prepare.

If it does not go well

We go through the result with you and advise on the options. When you can retake the test, and what level is required, depends on the employer or operator who asked for it.

Sources: Danish order on medical examination of seafarers and fishermen, BEK no. 1463 of 05/12/2023, section 32 and annex 4; Global Wind Organisation, Do I need a medical examination to participate in GWO training?; Danish Health Authority (Sundhedsstyrelsen), physical activity recommendations for adults aged 18 to 64. The test procedure is described from Offshore Medicals' own practice. Read September 2026. This page is practical guidance and does not replace the doctor's assessment on the day.

Frequently asked questions

Who decides whether I need a Chester Step Test?

Usually the employer or operator. GWO makes no requirements for a medical assessment and leaves it to the employer.

What result do I need?

That is set by whoever asks for the test. Ask your employer or training provider which level they require.

What should I bring?

Training clothes, indoor shoes with good grip, photo ID and a list of your regular medication.

Can I take it the same day as my medical?

Yes. Mention it when booking so we set aside enough time for both.

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Dr Helle Wibe

Offshore Medicals is run by Dr Helle Wibe

Seafarer and petroleum doctor with more than 20,000 medical examinations. OEUK-approved since 2006 and approved in Denmark, Norway, the UK and Sweden.

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