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| Name | Class |
|---|---|
| Linkoeping University | OTHER_GOV |
| University of Bath | OTHER |
| The Norwegian Olympic and Paralympic Committee and Confederation of Sports | UNKNOWN |
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The majority of injuries among Norwegian youth occur in sports. The purpose of the project is to conduct an effect and process evaluation of the intervention #Utviklingsklar, an injury-preventive club-based intervention in youth handball and football. Central to the evaluation is whether the intervention influences the occurrence of new and recurring injuries through changed coaching practices (injury prevention warm-up, strength training, and management of players with pain and injuries). Over one season, participants from 30 clubs in youth handball and football respectively will participate in two cluster-randomized studies. Coaches and club leaders implement #Utviklingsklar and create plans and practices for injury prevention. The control clubs train as usual. Players report injuries. An additional handball and football club are followed up with observation and interviews in a qualitative part of the process evaluation. The project provides knowledge about how injuries and health in the ¾ of Norwegian youth who participate in organized sports are affected by interventions aimed at club and coaching practices.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| #Utviklingsklar | Experimental | The intervention consists of 1) an e-learning course, 2) a workshop to create plans and practices for injury-prevention, 3) a mid-season meeting |
|
| Control | No Intervention | Practice as usual, which may include other injury-preventive coaching practices |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| #Utviklingsklar | Behavioral | The intervention consists of 1) an e-learning course, 2) a workshop to create plans and practices for injury-prevention, 3) a mid-season meeting |
|
| Measure | Description | Time Frame |
|---|---|---|
| Oslo Sports Trauma Research Center Questionnaire on Health Problems (OSTRC-H2) | Weekly injury severity score (0 best - 100 worst) | Average of biweekly reports over 1 sports season (estimated to 32 weeks) |
| Measure | Description | Time Frame |
|---|---|---|
| Sudden and gradual onset injuries | Weekly injury severity score during the match season for sudden and gradual onset injuries | 1 sports season (estimated to 32 weeks) |
| Injury location | Weekly injury severity score during the match season for lower leg, ankle/foot, knee, shoulder (handball), thigh (football), hip/groin (football), lumbosacral (football) and head (football) injuries |
| Measure | Description | Time Frame |
|---|---|---|
| Fidelity - workshop completion checklist | At workshop (about 1-2 weeks before sports season) | |
| Fidelity - Midseason meeting checklist | Midseason (about 16 weeks) | |
| Dose - completion of e-learning |
Inclusion criteria:
-Clubs are eligible for participation if they are able to participate with one club leader, 2-6 teams, and a minimum of one coach from each of the participating teams
Exclusion criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Hege Grindem | Oslo Sports Trauma Research Center | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Hordaland Fotballkrets | Bergen | Norway | ||||
| Håndballregion Øst |
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| Type | Includes Protocol | Includes SAP | Includes ICF | Document Label | Document Date | Document Uploaded Date | Document File Name |
|---|---|---|---|---|---|---|---|
| SAP | No | Yes | No | Statistical Analysis Plan | Nov 6, 2025 | Dec 9, 2025 | SAP_000.pdf |
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| ID | Term |
|---|---|
| D001265 | Athletic Injuries |
| ID | Term |
|---|---|
| D014947 | Wounds and Injuries |
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| The Norwegian Football Federation |
| UNKNOWN |
| The Norwegian Handball Federation | UNKNOWN |
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The biostatistician performing the main analysis will be blinded to group assignment
| 1 sports season (estimated to 32 weeks) |
| Injury location for sudden onset injuries | weekly injury severity score during the match season for sudden onset lower leg, ankle/foot, knee, shoulder (handball), thigh (football), hip/groin (football), and lumbosacral (football) injuries | 1 sports season (estimated to 32 weeks) |
| Injury location gradual onset injuries | Weekly injury severity score during the match season for gradual-onset lower leg, ankle/foot, knee, shoulder (handball), thigh (football), hip/groin (football), and lumbosacral (football) injuries | 1 sports season (estimated to 32 weeks) |
| Injury burden | Defined as the sum of injury severity score divided by the sum of exposure (per 1000 hours), where the sums are over team and over match season. The unit of analysis for burden is thus team and not player. | 1 sports season (estimated to 32 weeks) |
| Sports Injury Preventive Behavior Questionnaire (construct scores 0 worst - 1 best) | The aggregated construct scores for the determinants 1) risk perception, 2) intention, 3) outcome expectancies, 4) action self-efficacy, 5) maintenance self-efficacy, 6) coping self-efficacy, 7) recovery self-efficacy, 8) action plans 9) coping plans and 10) club social support | Baseline, midseason and post season (about 32 weeks) |
| Injury-preventive coaching practices | The injury-preventive coaching practice outcomes consist of:
| Baseline and post season (about 32 weeks) |
| Before workshop (about 1-2 weeks before sports season) |
| Dose - workshop attendance checklist | At workshop (about 1-2 weeks before sports season) |
| Dose - Midseason meeting checklist | Midseason (about 16 weeks) |
| Oslo |
| Norway |
| Oslo Fotballkrets | Oslo | Norway |
| Akershus Fotballkrets | Strømmen | Norway |
| Håndballregion Nord | Trondheim | Norway |
| Trøndelag Fotballkrets | Trondheim | Norway |