Effect of Knee Extensor Training on the Lumbar Spine

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

NOT_YET_RECRUITING

Clinical Phase

NA

Total Enrollment

128 participants

Study Classification

INTERVENTIONAL

Study Start Date

2026-02-01

Study Completion Date

2026-06-01

Brief Summary

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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:

* Exercise three times per week for 8 weeks
* Be assessed before, 4 weeks after, and 8 weeks after intervention

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Detailed Description

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Conditions

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Non Specific Low Back Pain

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

TRIPLE

Participants Caregivers Outcome Assessors

Study Groups

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control group

lumbar strengthening

Group Type ACTIVE_COMPARATOR

back strengthening exercise

Intervention Type OTHER

strengthening exercise to lumbar extensors

Treatment Group I

lumbar strengthening exercise and knee CKC exercise

Group Type EXPERIMENTAL

OKC Exercise

Intervention Type OTHER

knee extensor OKC exercise added to the lumbar strengthening exercise

Treatment Group II

lumbar strengthening exercise and knee CKC exercise

Group Type EXPERIMENTAL

CKC Exercise

Intervention Type OTHER

knee extensor CKC exercise added to the lumbar strengthening exercise

Treatment Group III

lumbar strengthening exercise and knee OKC and CKC exercise

Group Type EXPERIMENTAL

CKC and OKC Exercise

Intervention Type OTHER

knee extensor OKC and CKC exercise added to the lumbar strengthening exercise

Interventions

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back strengthening exercise

strengthening exercise to lumbar extensors

Intervention Type OTHER

OKC Exercise

knee extensor OKC exercise added to the lumbar strengthening exercise

Intervention Type OTHER

CKC Exercise

knee extensor CKC exercise added to the lumbar strengthening exercise

Intervention Type OTHER

CKC and OKC Exercise

knee extensor OKC and CKC exercise added to the lumbar strengthening exercise

Intervention Type OTHER

Eligibility Criteria

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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.

Minimum Eligible Age

40 Years

Maximum Eligible Age

60 Years

Eligible Sex

MALE

Accepts Healthy Volunteers

No