Table 2. Topics of the semi-structured interview guide

1. Introducing the topic and conduct of the interview

2. Questions to generate/validate participant information (e.g. number of modules attended)

3. Exploration of motivations and expectations before the intervention

4. Perceived positive and negative aspects of the intervention

5. Challenges and difficulties of participating in the intervention

6. Supporting and hindering factors for practical implementation into daily life

7. Exploration of further topics and wishes regarding the intervention

8. Closing of the interview