An interventional study of Injury prevention exercise programs in Sport Injury and Adherence, Patient, sponsored by Linkoeping University. Completed at 1 site in Sweden. Open to participants aged 13 Years to 17 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2018-02-27.
Sponsored by Linkoeping University · Not applicable, Interventional, and Prevention
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Among 10 studies in Patient Compliance with a site in Sweden — none open to participants now, 1 under way, none of them phase 3. Patient Compliance · Sweden.
Among the 10 studies in Patient Compliance with a site in Sweden, this one is the only one that started in 2017, is one of 6 with no phase, and was the 6th registered.
752 studies on the registry are indexed under Patient Compliance; 72 are open to participants now.
Browse Patient Compliance studies →None of the 10 studies in Patient Compliance with a site in Sweden is open now. The open studies under Patient Compliance, anywhere →
Of the 45 Patient Compliance studies recruiting now, 25 (56%) set no upper age limit and 13 (29%) stop at 75 or younger; 11 take children under 18; 14 take healthy volunteers.
This study: 13 Years to 17 Years · all sexes · healthy volunteers too.
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10 studies; the count open now beside each. This study's row is marked.
First in 2001; this study’s year is marked. 1 started in 2017.
This study's enrollment of 115 is close to the median of 116 across 527 interventional studies indexed under Patient Compliance.
Median enrollment 158 across the 6 interventional studies, 53 across the 4 observational. Of the 9 that completed or were terminated, 0 (0%) have results posted.
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1 of 10 have an industry lead sponsor. The 9 most frequent:
Linkoeping University is the lead sponsor of 193 studies on the registry; 40 are open to participants now.
Linkoeping University has 1 study filed under Patient Compliance — fewer than ten, so there is no comparison to draw.
None of the studies under way reaches primary completion within a year.
Among the 10 studies in Patient Compliance with a site in Sweden, from their registry updates:
Nothing recorded among them since 2026-09-25.
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This study evaluates the effects of two different injury prevention exercise programs on sports-relevant performance tests and neuromuscular function in youth football players. Half of participants will receive education on an existing and previously tested exercise program, while the other half will receive education on a newly developed exercise program.
Injury prevention exercise programs have been developed for a variety of sporting contexts and many have proven to be efficacious in preventing injuries. Adherence with the training may, however, be an issue and poor adherence may limit the preventive effect. If using the preventive exercise programs can be shown to improve sports-relevant performance this may motivate both coaches and players to use these programs, since the reduction in injury risk is harder to notice for the individual.
This study focuses on a Swedish injury prevention exercise program called Knee Control. The program has been found efficacious in preventing acute knee injuries in girls' adolescent football players in previous trials. We have found, however, that coaches often modify the Knee Control program to improve program fit and player buy-in among female youth football players. Careful changes must be made to the program since there is a risk of compromising the preventive effect and the effect on performance if the training dose is too low or if effective exercises are replaced with other exercises. We have therefore further developed the Knee Control program, to a Knee Control+ program, to support the coaches in the tailoring of the program to preserve the preventive effect and hopefully enhance performance effects. By introducing more variation with easier and more difficult exercises, pair-exercises, competitive and plyometric elements the new Knee Control+ program may better fit both the youngest and the oldest players, which in turn may facilitate fidelity with and maintenance of the program.
The aim of the study is to compare the neuromuscular and performance effects of the original Knee Control and the new Knee Control+ programs among youth female and male football players. A secondary aim is to study player and coach experiences of the programs and their fidelity with the training protocol.
Hypothesis: We expect similar effects of both programs, or superior effects of the Knee Control+ program, showing that the programs are compatible but the program adherence and fidelity being better with Knee Control+.
Methods: Eight youth football teams (4 boys, 4 girls, age 13-17 years) with approximately 120 players will be included in the study. Four teams will receive education about the Knee Control program and four teams about the Knee Control+ program. All coaches and two to three players per team will take part in a workshop at baseline where registered physiotherapists will give practical instructions of the intervention exercise programs. The workshops will also contain theoretical information about injuries in football and the background for either the Knee Control or the Knee Control+ programs. The attending coaches and players will be able to test all exercises and receive feedback about correct movement technique.
Outcomes: Football-relevant performance and neuromuscular function will be tested at baseline and after 12 weeks of training.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
The Knee Control program exercise program will be performed during the warm-up to each football practice (at least twice per week) during the 12 week intervention period.
Other: Injury prevention exercise programs
The Knee Control+ is an extension of the original Knee Control exercise program offering a wider selection of exercises (to increase adherence) and more physically challenging exercises (adapted for athletes in the late teens and provide further stimuli to increase player performance and neuromuscular function). The program will be performed during the warm-up to each football practice (at least twice per week) during the 12 week intervention period.
Other: Injury prevention exercise programs
The two intervention programs contain exercises aiming to increase lower extremity strength, core stability, balance and neuromuscular function.
Change in performance on the agility t-test (s)
Time frame: Baseline and 12 weeks
Change in performance on the single-leg hop for distance (m)
Time frame: Baseline and 12 weeks
Change in performance on drop vertical jumps as measured with knee separation distance (m)
Time frame: Baseline and 12 weeks
Change in performance on the 505 agility test (s)
Time frame: Baseline and 12 weeks
Change in performance on the side-hop test (n)
Time frame: Baseline and 12 weeks
Change in performance on the 10 m sprint test (s)
Time frame: Baseline and 12 weeks
Change in performance on the 20 m sprint test (s)
Time frame: Baseline and 12 weeks
Change in performance on evaluation of lower extremity landing technique during the tuck jump test (points)
Time frame: Baseline and 12 weeks
Coach baseline and follow-up experiences of injuries and of the Knee Control and Knee Control+ programs
Time frame: Baseline and 12 weeks
Coach reported compliance and fidelity with the program protocol
Time frame: At follow-up 12 weeks
Player baseline and follow-up experiences of injuries and of the Knee Control and Knee Control+ programs
Time frame: Baseline and 12 weeks
Injuries that occur during the intervention period (number of injured players in each group)
Time frame: At follow-up 12 weeks
Plan to share: Undecided — Study data (de-identified player performance test scores) may be available at request from the principal investigator
Ran from Aug 2017 to primary completion in Nov 2017, 3 months.
Of 224 non-industry interventional studies with no phase under Patient Compliance, half reached primary completion within 20 months of starting (the median), counting those still running; a quarter within 9 and three quarters within 38. This study's 3 months is below that.
Counting every sponsor, half of 237 studies reached it within 20 months; a quarter within 9 and three quarters within 38.
How these figures are worked out, and which studies are left out of them.
This study is completed, as verified in Feb 2018. You cannot join it, but the record below documents what was studied.
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