Hamstring Tightness and Lumbar Lordosis Angel Across Functional Sitting Posture. (NCT07682142) | Clinical Trial Compass
Not Yet RecruitingNot Applicable
Hamstring Tightness and Lumbar Lordosis Angel Across Functional Sitting Posture.
Egypt110 participantsStarted 2026-08-01
Plain-language summary
The goal of this observational study is to learn about the relationship between hamstring tightness and the lumbar lordosis angle in sedentary adults across different sitting postures. The main question it aims to answer is:
Is hamstring tightness related to the lumbar lordosis angle across three functional sitting postures (upright, slumped, and forward-leaning)? It also asks whether hamstring tightness differs between men and women, whether it differs between the dominant and non-dominant leg, and whether the lumbar lordosis angle differs between men and women across the three postures.
Participants will have their hamstring tightness measured with the Active Knee Extension test and their lumbar lordosis angle measured with a bubble inclinometer while sitting in each of the three postures.
Who can participate
Age range
18 Years – 45 Years
Sex
ALL
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:
* Healthy adults aged 18-45 years.
* Sedentary occupation requiring \> 6 hours of sitting per day.
* Active Knee Extension (AKE) angle \>15°.
* Bilateral hamstring tightness.
* Sedentary individual as determined by IPAQ (MET≤ 600 min/week).
* Asymptomatic for low back pain at the time of testing.
Exclusion Criteria:
* History of significant low back pain requiring medical treatment in the past 12 months.
* Previous spinal surgery or structural spinal deformities.
* Lower extremity injury or surgery within the past 6 months.
* Neurological disorders affecting sensation or movement.
* Pregnant female or get birth in the last year.
* Body mass index (BMI) ≥ 30 kg/m².
* postural deviations resulting from shortening of the iliopsoas and erector spinae or insufficiency of the core stabilizers and hip extensors
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
Correlation between hamstring tightness and lumbar lordosis angle across three functional sitting postures
Timeframe: At a single assessment session (cross-sectional; Day 1).