Outcome
Type |
Measure |
Description |
Time frame |
Safety issue |
Primary |
All physical complaints injury in four main locations |
Any football related injury occurring to the ankle, knee, hamstrings and hip/groin, regardless of need of care or absence from football training or matches ("all physical complaints" injury definition) |
Study start up to end of season (7 months) |
|
Secondary |
All physical complaints injury |
Football related injury regardless of need of care or absence from football training or matches ("all physical complaints" injury definition) |
Study start up to end of season (7 months) |
|
Secondary |
Time-loss injury |
Football related injury causing absence from training or match with the team ("time-loss injury"). Time-loss injuries will be analyzed for all injury locations and for the four main injury locations (ankle, knee, hamstrings and hip/groin) separately. |
Study start up to end of season (7 months) |
|
Secondary |
Medical attention injury |
Football related injury where the player reports seeking care from a medical professional ("medical attention injury"). Medical attention injuries will be analyzed for all injury locations and for the four main injury locations (ankle, knee, hamstrings and hip/groin) separately. |
Study start up to end of season (7 months) |
|
Secondary |
Acute or gradual onset injury |
Football related injury that occurs suddenly and is associated with a specific, identifiable event ("acute injury") or injury with gradual onset caused by repeated microtrauma without a single, identifiable event responsible for the injury ("gradual onset injury"). Acute and gradual onset injuries will be analyzed for all injury locations and for the four main injury locations (ankle, knee, hamstrings and hip/groin) separately. |
Study start up to end of season (7 months) |
|
Secondary |
Substantial injury |
Football related injury leading to moderate or severe reductions in training volume or performance, or inability to participate in football according to the Oslo Sports Trauma Research Center questionnaire ("substantial injury"). Substantial injuries will be analyzed for all injury locations and for the four main injury locations (ankle, knee, hamstrings and hip/groin) separately. |
Study start up to end of season (7 months) |
|
Secondary |
Adverse events |
Adverse events of using the interventions. |
Study start up to end of season (7 months) |
|
Secondary |
Team intervention compliance |
Coach reported compliance with each respective intervention protocol. Coaches will report each week the number of team activities (trainings and matches) and the use of the intervention (yes/no) for each of these activities. Team intervention compliance will be calculated as a) the average weekly number of intervention sessions performed during the season, and b) as a proportion, i.e. the number of team intervention sessions / total number of team activities during the season. Team compliance will be reported separately for trainings and matches. |
Study start up to end of season (7 months) |
|
Secondary |
Player intervention compliance |
Player reported compliance with each respective intervention protocol. Players will report each week the number of activities (trainings and matches) they participated in and the use of the intervention (yes/no) for each of these activities. Player intervention compliance will be calculated as the average weekly number of intervention sessions performed during the season. Player compliance will be reported separately for trainings and matches. |
Study start up to end of season (7 months) |
|
Secondary |
Exercise fidelity |
Observation of a team training session by a study physiotherapist to evaluate exercise fidelity, i.e. performing exercises according to instructions. A standard checklist will be used in the observation of players performing the intervention exercises and each exercise will be marked as correct/incorrect. Exercise fidelity will be reported as a proportion: number of exercises performed correctly / total number of exercise observations. |
One observation during the season after approximately 6 months |
|
Secondary |
Utilization fidelity |
Coach reported utilization fidelity of the intervention. At mid-season (approximately 4 months) and at the end of the season (7 months) coaches will report the use of the intervention program in a survey describing which exercises were used, which progression/difficulty levels of the program were used, timing of the exercise use (before, beginning, during, or after the training session), and dosage (number of sets, number of repetitions or time per exercise). Utilization fidelity will be presented as a descriptive outcome. |
Two times during the season: at 4 months and 7 months |
|
Secondary |
Coach experience of injuries and intervention program |
Coach baseline, mid-season and follow-up experiences of injuries and of the interventions. Coaches will answer a survey with likert scale questions (rank 1-7) about risk perceptions of sport participation, perceived effects of the intervention, and experiences of using the intervention program. The outcome will be reported as median values of the likert scale questions (1-7). |
Three times during the season: at study start, at 4 months and at 7 months |
|
Secondary |
Player experience of injuries and intervention program |
Player baseline, mid-season and follow-up experiences of injuries and of the interventions. Players will answer a survey with likert scale questions (rank 1-7) about risk perceptions of sport participation, perceived effects of the intervention, and experiences of using the intervention program. The outcome will be reported as median values of the likert scale questions (1-7). |
Three times during the season: at study start, at 4 months and at 7 months |
|
Secondary |
Health care need |
Number of health care visits due to football related injuries during the season, type of diagnostic examinations and treatments |
Study start up to end of season (7 months) |
|
Secondary |
Costs |
Estimated costs of football related injuries and costs of the intervention |
Study start up to end of season (7 months) |
|