Group 1 | Facilitator VS | Participant 1 (female, player–field player) | Participant 2 (male, coach–goalkeeper coach) | Participant 3 (male, biomechanical engineer–PhD, research focus on prevention of head and neck injuries) | Participant 4 (female, coach educator–coach, former elite player and project manager at the Swedish Handball Federation) |
Group 2 | Facilitator EA | Participant 5 (female, player–goalkeeper) | Participant 6 (male, referee–youth and adult level) | Participant 7 (male, biomechanical engineer–PhD, research focus on prevention of head and neck injuries) | |
Group 3 | Facilitator PM | Participant 8 (male, coach–youth coach and club manager) | Participant 9 (male, referee–national and international level) | Participant 10 (female, physiotherapist–PhD, research focus on sports injuries, especially concussion, senior handball coach, former elite player) | |