Table 1 Interview schedule of questions

Individual influences

• Can you describe your physical activity as a child and adolescent?

• How much physical activity do you currently do?

• What types of physical activities do you do for leisure/work/household/transport?

• How do these physical activities make you feel?

• Do you want to do more physical activity?

• What are the main factors that may prevent you from being as active as you'd like?

• If you're feeling tired/stressed/unwell, does this impact on your physical activity in your leisure-time?

• How confident are you that you can overcome these feelings at the time and still be active in your leisure-time?

• Does your mood predict how active you are?

• What helps/motivates you to be active?

• Did you became less active because of your mental health or did you develop depression because you were inactive?

• Who are you active with in your leisure-time?

• Is it a different experience for you when you are active with someone rather than alone?

Social influences

• How active are the people around you?

• Do they encourage you to be active?

• Does anyone try to stop you from being active?

• Does their physical activity behaviours influence yours?

• How do you perceive the sporting and recreational facilities in your neighbourhood?

Physical environmental influences

• Where are you active in your leisure-time?

• Thinking about these places, what things are important to you being physically active there?

• What things do you think would help you to be more physically active around your neighbourhood?