Shift Workers' Health Behavior Action Program Across Europe

To be part of this study, you need to be at least 21 years old and work night shifts regularly. This means you should have been working night shifts for over 3 years, expect to continue for at least another year, and usually work at least 4 night shifts per month, often two in a row. You also need to have a smartphone and be happy to use a study app on it.

There are certain reasons why you might not be able to join. For example, if your Body Mass Index (BMI) is very low (under 18.5) or very high (over 40), or if you are pregnant or breastfeeding. We also can't include people with certain ongoing serious health conditions like kidney failure, active hepatitis, severe heart problems, or cancer.

We also need to check if you're taking any medicines that might affect your sleep, appetite, or weight, such as certain sleeping tablets or stimulant medications. If you've recently had therapy for a sleep problem, have been in another lifestyle programme recently, or are planning surgery, you might not be able to take part. This helps make sure the study results are clear and accurate.

The study will involve taking part in the Combined Lifestyle Intervention Program (CLIP). This programme will likely include advice and support on sleep, diet, exercise, and stress, delivered through your smartphone via a dedicated study app. This means you'll need to regularly use your phone for study activities. You'll also have a number of assessments, which might involve keeping daily logs or wearing devices to track your sleep objectively. The exact number of visits or assessments isn't detailed, but it will involve checking in on your sleep duration, diet, physical activity, stress, body weight, and some health markers. The total duration of your participation isn't specified, but you'll need to be someone who expects to continue night shift work for at least a year after joining.