Lower-Extremity Strength and Power in Elite Hockey Players With and Without Patellar Tendinopathy (NCT07356596) | Clinical Trial Compass
CompletedNot Applicable
Lower-Extremity Strength and Power in Elite Hockey Players With and Without Patellar Tendinopathy
Sweden28 participantsStarted 2025-01-01
Plain-language summary
This study aims to identify differences in lower-extremity strength and power between elite ice hockey players with and without patellar tendinopathy using unilateral and bilateral comparisons. It applies a structured, cross-sectional methodology that combines clinical screening, performance testing, and ultrasound imaging to characterize patellar tendon structure and lower-limb function in elite hockey players. Players are objectively classified into healthy, unilateral, or bilateral patellar tendinopathy groups based on standardized ultrasound criteria. Strength and power outcomes are assessed under controlled conditions and normalized to body mass to allow fair between-group comparisons. Isokinetic concentric strength is evaluated during a split squat performed on a robotic resistance device, while peak power output is measured using a six-second all-out cycling test on a calibrated ergometer.
Who can participate
Age range
18 Years – 40 Years
Sex
MALE
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* Male
* Elite ice-hockey player
* ≥ 18 year
Exclusion Criteria:
* injuries to lower extremity that could influence test perfomance
* deviant passive and active range of motion in the knee joint
* pain in the knee during squatting, lunging, or jumping
* limping while walking
* positive patellar The Royal London Hospital Test
* palpable or visible the knee joint effusion
* positive Lachmann, varus/valgus stress test, patellar apprehension, or Murray's/Apley's test
* hypo- or atrophic quadriceps on only one side (side difference with limb symmetry index \< 90%).
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.