Quadriceps and Hamstring Activation Timing (NCT07532980) | Clinical Trial Compass
By InvitationNot Applicable
Quadriceps and Hamstring Activation Timing
Turkey (Türkiye)25 participantsStarted 2026-04-20
Plain-language summary
The anterior cruciate ligament (ACL) plays a crucial role in maintaining knee stability and enabling dynamic movement. ACL injuries are common, especially among athletes, and reconstruction surgery is frequently performed to restore knee function. Despite rehabilitation, neuromuscular deficits-particularly in muscle activation timing-may persist. This study will aim to evaluate the activation timing of quadriceps and hamstring muscles during a functional task in individuals who have undergone ACL reconstruction.
Who can participate
Age range
18 Years – 45 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:
* participants must be males between 18 and 45 years old
* must have undergone ACL repair surgery and be within 6 months to 2 years post-surgery
* should have completed a standard rehabilitation program post-surgery
* must provide written informed consent to participate in the study
* should be in generally good health, without any other significant medical conditions that could affect the study outcomes;
* must have returned to a moderate level of physical activity post-surgery
Exclusion Criteria:
* participants with any neurological disorders affecting lower limb function or any other musculoskeletal disorders or injuries that could affect the lower limb, apart from the ACL injury
* those with cardiovascular conditions that contraindicate participation in physical activity
* those with contraindications to kinesiological electromyography, such as skin conditions or allergies to electrodes
* those who are unable or unwilling to comply with study procedures and follow-ups
* those who have had multiple ACL surgeries on the same knee
* participants involved in ongoing litigation related to their ACL injury
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.
What they're measuring
1
Electromyography
Timeframe: Single session (approximately 15-20 minutes per participant)