Comparison of the Effects of Static and PNF Hamstring Stretching Exercises in Patients With Knee Osteoarthritis

Study Overview
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Brief Summary
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The aim of this study is to determine and compare the effects of static and PNF hamstring stretching exercises on joint pain, hamstring flexibility and functional status in patients with knee osteoarthritis.

Detailed Description
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A total of 36 patients between the ages of 40 and 75 who were diagnosed with Kellgren-Lawrence Stage II and III knee OA by the physician were included in the study. Participants were divided into two groups as static stretching group (n = 18) or PNF stretching group (n = 18). Patients' demographic and clinical information was recorded. Pain intensity was evaluated with visual pain scale, hamstring flexibility with Active Knee Extension Test, functional status with Western Ontario and McMasters University Osteoarthritis Index and Timed Get Up and Go Test. In addition to the standard physiotherapy program, the subjects praticed stretching exercises for 15 sessions according to the groups that they've been separated. Evaluations were repeated in the end of the treatment (4th week) and in the 3rd month after the treatment.

Official Title
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Comparison of the Effects of Static and PNF Hamstring Stretching Exercises in Patients With Knee Osteoarthritis

Conditions
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Knee Osteoarthritis

Intervention / Treatment
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* Other: Static Stretching
* Other: PNF Stretching


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Individuals with knee osteoarthritis severity II, III, or IV according to the Kellgren-Lawrence Classification, Individuals with positive active knee extension test, Individuals with a body mass index of 30 or less, Individuals with a pain severity of at least 3/10 according to the visual pain scale. Exclusion Criteria: Individuals with health problems that prevent them from doing the evaluations and exercises to be used in the study, Individuals who exercise regularly for the last six months, Individuals with a diagnosis of neurological disease affecting the lower extremity.

Ages Eligible for Study
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Minimum Age: 40 Years
Maximum Age: 75 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Static Hamstring Stretching<br>Static Hamstring Stretching | Other: Static Stretching<br>* Static hamstring stretching exercise lasting 30 seconds and 10 repetitions under the supervision of the physiotherapist<br>|
| Active Comparator: PNF Stretching<br>PNF Hamstring Stretching (Hold-Relax) | Other: PNF Stretching<br>* PNF hold-relax stretching technique that consists of 10 seconds isometric contraction, 30 seconds hamstring stretching and 10 repetitions under the supervision of the physiotherapist<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Active Knee Extension Test for Hamstring Flexibility | Higher values represent better outcomes. | Baseline and post-intervention, up to 4 weeks | 
| Active Knee Extension Test for Hamstring Flexibility | Higher values represent better outcomes. | Post-intervention and follow-up, up to 3 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Visual Analogue Scale for Pain | The scale varies from 0 to 10. Higher values represent worse outcomes. | Baseline and post-intervention, up to 4 weeks | 
| Visual Analogue Scale for Pain | The scale varies from 0 to 10. Higher values represent worse outcomes. | Post-intervention and follow-up, up to 3 months | 
| Western Ontario and McMaster Universities Osteoarthritis Index | The scale varies from 0 to 96. Higher values represent worse outcomes. | Baseline and post-intervention, up to 4 weeks | 
| Western Ontario and McMaster Universities Osteoarthritis Index | The scale varies from 0 to 96. Higher values represent worse outcomes. | Post-intervention and follow-up, up to 3 months | 
| The Timed Up & Go Test | Higher values represent worse outcomes. | Baseline and post-intervention, up to 4 weeks | 
| The Timed Up & Go Test | Higher values represent worse outcomes. | Post-intervention and follow-up, up to 3 months | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Knee Osteoarthritis, Hamstring, Stretching