[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100618868":3},{"organization":4,"armGroups":7,"interventions":29,"overallOfficials":47,"centralContacts":52,"locations":34,"responsibleParty":62,"collaborators":65,"id":70,"slug":71,"hasResults":72,"nctId":73,"briefTitle":74,"officialTitle":75,"acronym":34,"eligibilityCriteria":76,"healthyVolunteers":72,"sex":77,"minAge":78,"maxAge":79,"enrollmentInfo":80,"targetDuration":34,"studyType":83,"phases":84,"briefSummary":86,"conditions":87,"keywords":34,"overallStatus":89,"whyStopped":34,"lastUpdateSubmitDate":90,"lastUpdatePostDateStruct":91,"startDateStruct":94,"completionDateStruct":96,"leadSponsor":98,"locationsCount":34},{"fullName":5,"class":6},"Lincoln University College","OTHER",[8,14,20,24],{"label":9,"type":10,"description":11,"interventionNames":12},"control group","ACTIVE_COMPARATOR","lumbar strengthening",[13],"Other: back strengthening exercise",{"label":15,"type":16,"description":17,"interventionNames":18},"Treatment Group I","EXPERIMENTAL","lumbar strengthening exercise and knee CKC exercise",[19],"Other: OKC Exercise",{"label":21,"type":16,"description":17,"interventionNames":22},"Treatment Group II",[23],"Other: CKC Exercise",{"label":25,"type":16,"description":26,"interventionNames":27},"Treatment Group III","lumbar strengthening exercise and knee OKC and CKC exercise",[28],"Other: CKC and OKC Exercise",[30,35,39,43],{"type":6,"name":31,"description":32,"armGroupLabels":33,"otherNames":34},"back strengthening exercise","strengthening exercise to lumbar extensors",[9],null,{"type":6,"name":36,"description":37,"armGroupLabels":38,"otherNames":34},"OKC Exercise","knee extensor OKC exercise added to the lumbar strengthening exercise",[15],{"type":6,"name":40,"description":41,"armGroupLabels":42,"otherNames":34},"CKC Exercise","knee extensor CKC exercise added to the lumbar strengthening exercise",[21],{"type":6,"name":44,"description":45,"armGroupLabels":46,"otherNames":34},"CKC and OKC Exercise","knee extensor OKC and CKC exercise added to the lumbar strengthening exercise",[25],[48],{"name":49,"affiliation":50,"role":51},"ABDULLAH F ALHUMAYANI","LUC Malaysia","PRINCIPAL_INVESTIGATOR",[53,58],{"name":54,"role":55,"phone":56,"phoneExt":34,"email":57},"Lamiaa K Elsayyad, Assistant professor","CONTACT","+201095366120","dr.elsayyadlamiaa@gmail.com",{"name":59,"role":55,"phone":60,"phoneExt":34,"email":61},"Hatem H Allam, Assistant professor","+966543321736","hatem.lamiaa@gmail.com",{"type":51,"investigatorFullName":63,"investigatorTitle":64,"investigatorAffiliation":5,"oldNameTitle":34,"oldOrganization":34},"ALHUMAYANI ABDULLAH FALEHA","Principal investigator",[66,68],{"name":67,"class":6},"Cairo University",{"name":69,"class":6},"Taif University","100618868","effect-of-knee-extensor-training-on-the-lumbar-spine-100618868",false,"NCT07337213","Effect of Knee Extensor Training on the Lumbar Spine","Knee Extensor-Focused Biomechanical Intervention for Pain, Posture, and Disability in Non-Specific Low Back Pain: A Randomized Controlled Trial","Inclusion Criteria:\n\nI. 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 .\n\nExclusion Criteria:\n\nI. 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).\n\nIV. Systematic chronic illnesses such as hypertension, cardiac and respiratory disorders, and diabetes mellitus.","MALE","40 Years","60 Years",{"count":81,"type":82},128,"ESTIMATED","INTERVENTIONAL",[85],"NA","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:\n\nWhat 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.\n\nParticipants will:\n\n* Exercise three times per week for 8 weeks\n* Be assessed before, 4 weeks after, and 8 weeks after intervention",[88],"Non Specific Low Back Pain","NOT_YET_RECRUITING","2026-01-06",{"date":92,"type":93},"2026-01-13","ACTUAL",{"date":95,"type":82},"2026-02-01",{"date":97,"type":82},"2026-06-01",{"name":5,"class":6}]