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Table 4 End-user targeted I-PROTECT intervention, i.e., information and injury prevention training, made available in a mobile application (I-PROTECT GO), specifically developed for the I-PROTECT project, with modules for players, coaches, club administrators, and caregivers

From: Co-creating holistic injury prevention training for youth handball: Development of an intervention targeting end-users at the individual, team, and organizational levels

Basic information in all modules

• About I-PROTECT and I-PROTECT GO

• Definition sports medicine and sport psychology related to current context

• Current knowledge about injuries and benefits of injury prevention training

• Physical principles of injury prevention including videos

–Landing technique

– Shoulder strength and throwing technique

– Posture and core strength

• Psychological principles of injury prevention

– Self-awareness

– Being in the present moment

– Prevent and handle stress

– Relaxation

Modules in I-PROTECT GO

Players

Coaches

Club administrators

Caregivers

Additional information including specific advice

• Load management

– Physical and mental load and recovery

– Sleep

– Food and fluids

• Motivation: autonomy, perceived competence, and relatedness (i.e., Self-Determination Theory)

• Communication and feedback

• Dialogue

• Load management

– Physical and mental load and recovery

– Sleep

– Food and fluids

• Motivation: autonomy, perceived competence, and relatedness (i.e., Self-Determination Theory)

• Communication and feedback

• Dialogue

• Load management

– Physical and mental load and recovery

– Sleep

– Food and fluids

• Implementation including key components of strategies, processes, and actions (e.g., describe goals, identify possible barriers and solutions to address these, describe follow-up, maintenance, activities, roles and responsibilities)

• Motivation: autonomy, perceived competence, and relatedness (i.e., Self-Determination Theory)

• Communication and feedback

• Dialogue

• Load management

– Physical and mental load and recovery

– Sleep

– Food and fluids

Training

Age 13–14 years

• Strength and plyometric exercises (body weight or low weights/resistance)

– 1 program including 8 exercises for legs, core, shoulders with possibility to change and/or add exercises

• Sport psychology exercises

– 1 program with 1–2 monthly exercises over 6 months

• Handball-specific exercises

– 8 exercises (legs n = 3, shoulder n = 4, core n = 1)

Age 15–17 years

• Strength and plyometric exercises (with weights)

– 3 programs including 8 exercises for legs, core, shoulders with possibility to change and/or add exercises

• Sport psychology exercises

– 2 programs to choose from with 1–2 monthly exercises or 3–6 monthly exercises over 6 months

• Handball-specific exercises including physical principles of injury prevention (from coach module)

– 8 exercises (legs n = 3, shoulder n = 4, core n = 1)

Age-related, i.e., 13–14 years and 15–17 years

• Handball-specific exercises and sport psychology exercises

– 6 training periods (one period is used over approx. 6 weeks), each including 3 example programs for variation, thus, in total 18 example programs over a season. Each program includes 5–7 physical exercises for legs, shoulders, core, whereof 1–2 programs also include 1–2 sport psychology exercises.

– 1–2 alternative exercises provided for each exercise so that coaches have the opportunity to change and/or progress difficulty of exercises

– Possibility to build own program

• 1 program of handball-specific exercises from coach module

• Example of strength exercises (13–14 years and 15–17 years) from player module

• Example of sport psychology exercises from player module

• 1 program of handball-specific exercises from coach module

• Example of strength exercises (13–14 years and 15–17 years) from player module

• Example of sport psychology exercises from player module