Appendix 1

Expert Interview Guidelines Rest Defense

Prior Interview:
- informed consent, privacy policy, participant information
- Basic information:
            - Age
            - Type of coaching license
            - Coaching experience (years, team, league, role)

Interview Start (Ice-Breaker Questions):
- What led you to become a soccer coach/ soccer analyst?
- What coaching experience do you have in professional soccer (years, team, league, role)?

Questions:

Open questions to start the conversation:
1.1 What is your experience with rest defense?
1.2 What do you understand by the term rest defense?
1.3 From your perspective, how would you describe rest defense?

Follow-up questions if not answered before:

Objective:
2.1 In your opinion, what is the goal of rest defense?

Characteristics:
2.2 In your view, when does the rest defense occur? When does it come into play? How long does the rest defense action
last? (temporal: playing phase)
Difference: When is rest defense coached, when does it come into play?
2.3 Which players do you think are involved in the rest defense? (spatial: number of players, position group)
2.4 In your opinion, how should the rest defense be positioned on the pitch? (spatial: positioning)

Tactics:
2.5 Do you know tactical approaches in rest defense?
2.6 What tactical variations do you use in rest defense?

Success:
2.7 In your opinion, what is important to be effective/successful in rest defense (also compared to an unsuccessful/ineffective rest defense)?
Difference: success based on the result of the rest defense, success based on behavior of the players involved in the rest
defense.

Definition:
2.8 How would you define rest defense?