Trial · NCT07894250
Q-Angle, Segment Length, Quadriceps, and Knee Alignment in Soccer Players
NCT07894250, Not yet recruiting, Suleyman Demirel University
3 sourcestrials-2026-11-12-0.5.0
Cite this record
ConductScience Library. Q-Angle, Segment Length, Quadriceps, and Knee Alignment in Soccer Players. Trials, record NCT07894250. Release trials-2026-11-12-0.5.0, 12 Nov 2026. https://conductscience.org/library/trials/NCT07894250
On this page
Trial
As registered on ClinicalTrials.gov, in the graph's capture of the registry.
- Title
- Q-Angle, Segment Length, Quadriceps, and Knee Alignment in Soccer Players
- NCT number
- NCT07894250
- Status
- Not yet recruiting
- Enrollment
- 29 participants, estimated
- Lead sponsor
- Suleyman Demirel University
- Conditions
- Soccer Players
- Interventions
- Group 1
- First posted
- 2026-10-26
- Last updated
- 2026-10-26
Source ClinicalTrials.gov
Registered outcomes4
Each outcome the trial registered, primary first, in ClinicalTrials.gov's words.
| List | Outcome | Time frame | Description |
|---|---|---|---|
| Primary | Q angle | Baseline (Day 0) | Q-angle: With the subject in a supine position and the lower extremities in a neutral position, the angle formed by the lines connecting the anterior superior iliac spine (ASIS) to the center of the patella and the center of the patella to the tibial tuberosity will be recorded as the Q-angle using a universal goniometer. Three consecutive measurements will be performed on both extremities, and the mean of these measurements will be used in the analyses. |
| Secondary | Lower extremity segment lengths | Baseline (Day 0) | Measurement of lower extremity segment lengths: The distance between the anterior superior iliac spine (ASIS) and the medial malleolus will be measured in centimeters with the subject in the supine position. Femur length will be measured in centimeters as the distance between the greater trochanter and the lateral condyle of the femur. Tibia length will be measured in centimeters as the distance between the lateral condyle of the femur and the lateral malleolus. A non-stretchable tape measure will be used for the measurements. Measurements for both extremities will be recorded separately, and right-left differences will be calculated. The femur/tibia ratio will be calculated by dividing the femur length by the tibia length. All measurements will be repeated once. |
| Secondary | Surface Electromyography Assessment: | Baseline (Day 0) | A 'Noraxon' device will be used for surface electromyography to assess quadriceps muscle activity. EMG activity will be recorded from the \*m. rectus femoris\* (RF), \*m. vastus medialis\* (VM), and \*m. vastus lateralis\* (VL) muscles on the dominant side. Electrode placement will adhere to the standards of the "Surface EMG for Non-Invasive Assessment of Muscles" (SENIAM) project. Electrodes will be positioned parallel to the direction of the muscle fibers: for the RF, at approximately 50% of the line between the ASIS and the patella; for the VM, at approximately 80% of the line between the ASIS and the reference point on the medial aspect of the knee joint space; and for the VL, at approximately two-thirds of the line between the ASIS and the lateral edge of the patella. Prior to electrode placement, body hair and dead skin will be removed using a razor and alcohol, and electrodes will be placed with a center-to-center distance of 20 mm. A BIOPAC MP150 system will be used for surface elec |
| Secondary | Dynamic Knee Alignment During Single-Leg Squat | Baseline (Day 0) | Participants will be instructed on the correct squatting and descent technique from a lateral view using an instructional video and verbal explanations. Before the test begins, participants will perform the movement approximately four times. For the test, kinesiology tape markers will be placed at the following reference points: the anterior superior iliac spine (ASIS), the midpoint of the patella, and the midpoint of the ankle (between the medial and lateral malleoli). Three trials will be performed for each lower extremity, with a two-minute rest period between trials. Participants will be asked to perform a single-leg squat, flexing the knee to approximately 60°. During the test, participants will be required to stand barefoot on a marked line, keep the non-tested knee flexed at approximately 90°, cross their arms over their chest, and maintain a forward gaze. A maximum of 5 seconds will be allowed to complete the test, which will commence upon the researcher's command. A trial wil |
Source ClinicalTrials.gov
Outcomes0
Each outcome the trial posted results for, in ClinicalTrials.gov's words.
None in this release.
Results by group0
Each measurement the trial posted, group by group, in the words and numbers it posted.
None in this release.
Participant flow0
How many started, completed or left each group, period by period.
None in this release.
Adverse events0
Each adverse event the trial posted, group by group: the participants affected out of those at risk.
None in this release.
Adverse event totals0
The totals the trial posted for each group.
None in this release.
Papers0
The papers the trial lists on ClinicalTrials.gov.
None in this release.
Grants0
The grants NIH RePORTER links to the trial, newest funded first: NIH's, and some of AHRQ's, CDC's, FDA's and VA's. Each shows its title, principal investigators, organization and funder in its newest year.
None in this release.
Trial comparisons0
Comparisons of the trial's two groups, calculated by ConductScience from the counts it posted.
None in this release.
Tests0
The ConductCognition tests this trial's registered outcomes name, as ScienceGraph matched them in trial-tests-2026-11-12-0.2.1.
None in this release.
Data dates
The day each source was copied for this release.
Sources 3
- ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
- ClinicalTrials.govNo license stated
- NIH RePORTER's clinical studies and project filesPublic domain
Each source's terms
- ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
- ClinicalTrials.govnone stated
- NIH RePORTER's clinical studies and project filesPublic domain (NIH RePORTER)
ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.
For software
Read this trial from software.
The record and each of its lists are JSON, twenty rows a page. No key.
GET https://conductscience.org/api/trials/v1/NCT07894250
GET https://conductscience.org/api/trials/v1/NCT07894250/registered