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| Name | Class |
|---|---|
| Cairo University | OTHER |
| Taif University | OTHER |
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The goal of this clinical trial is to learn if knee extensor training with different protocols works to treat LBP in adults.. The main questions it aims to answer are:
What are the comparative effects of open and closed kinetic chain knee extensor strengthening exercises versus lumbar stabilization exercises on lumbar curvature, postural control, and disability in individuals with non-specific low back pain? 1.4.2. How does open kinetic chain knee extensor strengthening affect pain, functional capacity, and lumbar spine stability compared to closed kinetic chain exercises in individuals with non-specific low back pain? 1.4.3 What is the effect of open kinetic chain knee extensor strengthening on pain, functional capacity, and lumbar spine stability compared to conventional lumbar muscle exercises in individuals with non-specific low back pain? 1.4.4 What is the effect of closed kinetic chain knee extensor strengthening on pain, functional capacity, and lumbar spine stability compared to conventional lumbar muscle exercises in individuals with non-specific low back pain? 1.4.5 What is the effect of open kinetic chain knee extensor strengthening on pain, functional capacity, and lumbar spine stability in individuals with non-specific low back pain? 1.4.6 What is the effect of close kinetic chain knee extensor strengthening on pain, functional capacity, and lumbar spine stability in individuals with non-specific low back pain? 1.4.7 What is the effect of conventional lumbar extensor strengthening on pain, functional capacity, and lumbar spine stability in individuals with non-specific low back pain Researchers will compare three different exercise protocols to a control group (will not receive exercise) to see if knee extensor training has an effect on problems associated with LBP.
Participants will:
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| control group | Active Comparator | lumbar strengthening |
|
| Treatment Group I | Experimental | lumbar strengthening exercise and knee CKC exercise |
|
| Treatment Group II | Experimental | lumbar strengthening exercise and knee CKC exercise |
|
| Treatment Group III | Experimental | lumbar strengthening exercise and knee OKC and CKC exercise |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| back strengthening exercise | Other | strengthening exercise to lumbar extensors |
| |
| Measure | Description | Time Frame |
|---|---|---|
| Mean change in the Lumbar lordosis Cobb angle in degrees measured by X-ray | 8 weeks |
| Measure | Description | Time Frame |
|---|---|---|
| Mean change of LBP intensity from the baseline measured by Numeric Pain Rating Scale | Minimum Value: 0, which represents "no pain". Maximum Value: 10, which represents "worst imaginable pain," "worst possible pain," or "most intense pain imaginable Higher scores indicate a worse outcome | 8 weeks |
| Mean change in the quality of Life score as measured by the Oswestry Disability Index |
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Inclusion Criteria:
I. Males aged 40 to 60 years, II. nonsmokers, III. with normal body mass index IV. of Saudi nationality, V. office workers, VI. suffering from chronic NLBP for 12 weeks or more with a moderate disability according to the Oswestry Disability Index (score of 21 - 40%) moderate activity level according to the Arabic version of the International Physical Activity Questionnaire short form .
Exclusion Criteria:
I. Previous spinal surgery, fracture, deformity, or disease. II. Neurological deficit and Lower limb deformity or fracture, or disease. III. Mental or psychological illness. The Arabic version of the Self-Reporting Questionnaire (SRQ-20) developed by the World Health Organization (WHO) to screen for common mental disorders such as depression and anxiety, uses a cut-off score to distinguish between individuals with and without significant psychological distress. A score of 7 or below is generally considered "normal", indicating no significant psychological distress (Al-Subaie et al., 1998).
IV. Systematic chronic illnesses such as hypertension, cardiac and respiratory disorders, and diabetes mellitus.
Only males will be recruited for the study
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Lamiaa K Elsayyad, Assistant professor | Contact | +201095366120 | dr.elsayyadlamiaa@gmail.com | |
| Hatem H Allam, Assistant professor | Contact | +966543321736 | hatem.lamiaa@gmail.com |
| Name | Affiliation | Role |
|---|---|---|
| ABDULLAH F ALHUMAYANI | LUC Malaysia | Principal Investigator |
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| Type | Includes Protocol | Includes SAP | Includes ICF | Document Label | Document Date | Document Uploaded Date | Document File Name |
|---|---|---|---|---|---|---|---|
| Prot_SAP_ICF | Yes | Yes | Yes | Study Protocol, Statistical Analysis Plan, and Informed Consent Form | Nov 1, 2025 | Jan 6, 2026 | Prot_SAP_ICF_000.pdf |
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| ID | Term |
|---|---|
| D019092 | Conization |
| ID | Term |
|---|---|
| D001706 | Biopsy |
| D003581 | Cytodiagnosis |
| D003584 | Cytological Techniques |
| D019411 | Clinical Laboratory Techniques |
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| OKC Exercise |
| Other |
knee extensor OKC exercise added to the lumbar strengthening exercise |
|
| CKC Exercise | Other | knee extensor CKC exercise added to the lumbar strengthening exercise |
|
| CKC and OKC Exercise | Other | knee extensor OKC and CKC exercise added to the lumbar strengthening exercise |
|
Minimum Value: 0%, which represents the highest possible level of functioning and independence (no disability). Maximum Value: 100%, which represents the lowest possible level of functioning and total dependence |
| 8 weeks |
| Mean change in the muscle strength measured by the Hand-held dynamometer | A higher score indicate improvement | 8 weeks |
| Mean change in the posture control measured by the stare exursion test | Higher scores mean a better outcome | 8 weeks |
| D019937 |
| Diagnostic Techniques and Procedures |
| D003933 | Diagnosis |
| D013048 | Specimen Handling |
| D003949 | Diagnostic Techniques, Surgical |
| D013514 | Surgical Procedures, Operative |
| D008919 | Investigative Techniques |