The Effect Of Myofascial Release Technique On Respiratory Parameters in Subjects With Short Hamstring Muscle

Study Overview
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Brief Summary
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The aim of this study was to investigate the effect of myofascial release technique on rib cage mobility, respiratory function, respiratory muscle strength and endurance in patients with hamstring muscle shortness.

Detailed Description
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Hamstring flexibility is important to maintain activities such as walking and running in daily life. Hamstring muscle shortness, commonly seen in the community, is a risk factor for many musculoskeletal pathologies. Clinical observations have shown that the shortness of the Hamstring muscle causes spinal malalignment. This deterioration of the spine alignment may adversely affect the rib cage expansion. Moreover, considering that the optimal length of the muscles provides optimal contraction, it was found that the spinal malalignment adversely affected the effective contraction of the diaphragm by changing the position of diaphragm. A different view is that, because the fascia functions as a single tissue surrounding the entire body, a restriction in the hamstring muscle can also cause a restriction in distal muscles such as diaphragm through the fascia. There are many treatment methods used to increase the flexibility of the hamstring muscle. One of these methods is the myofascial release technique. In this technique, which targets both muscle and fascia, applying light and prolonged pressure provides the myo-fascial complex to reach its optimal length, resulting in the optimal function of the muscle. In our best knowledge, no study has evaluated the effect of myofascial release technique on respiratory parameters in patients with hamstring muscle shortness.

Official Title
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The Effect Of Myofascial Release Technique On Respiratory Functions, Respiratory Muscle Strength and Endurance in Subjects With Short Hamstring Muscle

Conditions
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Hamstring Contractures

Intervention / Treatment
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* Other: Myofascial Release Technique
* Other: Sham-Ultrasound


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: more than 15 degrees knee flexion angle during popliteal angle test, no generalized joint laxity according to Beighton Criteria, and no musculoskeletal problems of lower extremities. Exclusion Criteria: history of lower extremity and/or axial skeletal fracture; recent muscle, tendon injury in lower extremity; history of lumbal disc herniation, arthritic and/or inflammatory disease; obesity, diabetes and/or metabolic syndrome; history of surgery in the last month, using muscle relaxant medication in the last month; received manual therapy in the last month

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 40 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

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: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Sham Comparator: Sham-Ultrasound<br>Intervention will include one session sham-ultrasound application to both lower extremities of participant. The total time will be 15 minutes. | Other: Sham-Ultrasound<br>* Sham-ultrasound will be applied to back of legs and thighs in both extremities without pressure and all parameters of the ultrasound device except the timer will be closed.<br>|
| Experimental: Myofascial Release Technique+Sham-Ultrasound<br>In addition to one session sham-ultrasound, the intervention will include one session myofascial release technique to both lower extremities of participant. The total time will be 30 minutes. | Other: Myofascial Release Technique<br>* Myofascial release technique will bi applied bottom of the feet, back of the legs and hamstrings in both extremities. The practitioner will decide how long she should stay in a region according to the feeling of releasing in the tissue. The technique will be applied to a region at least 3 times.<br>Other: Sham-Ultrasound<br>* Sham-ultrasound will be applied to back of legs and thighs in both extremities without pressure and all parameters of the ultrasound device except the timer will be closed.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change from baseline Forced Vital Capacity (FVC) at 60 minutes | Respiratory Function Test | 60 minutes | 
| Change from baseline Forced Expiratory Volume in 1 second (FEV1) at 60 minutes | Respiratory Function Test | 60 minutes | 
| Change from baseline FEV1/FVC at 60 minutes | Respiratory Function Test | 60 minutes | 
| Change from baseline Peak Expiratory Flow (PEF) at 60 minutes | Respiratory Function Test | 60 minutes | 
| Change from baseline Forced expiratory flow over the middle one half of the FVC (FEF25-75%) at 60 minutes | Respiratory Function Test | 60 minutes | 
| Change from baseline maximum inspiratory pressure (MIP) at 60 minutes | Respiratory Muscle Strength Test | 60 minutes | 
| Change from baseline maximum expiratory pressure (MEP) at 60 minutes | Respiratory Muscle Strength Test | 60 minutes | 
| Change from baseline constant inspiratory threshold load test at 60 minutes | Respiratory Muscle Endurance Test | 60 minutes | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change from baseline axillary region chest circumference measurement during inspiration at 60 minutes | Chest Circumference Measurement | 60 minutes | 
| Change from baseline axillary region chest circumference measurement during expiration at 60 minutes | Chest Circumference Measurement | 60 minutes | 
| Change from baseline xiphoid region chest circumference measurement during inspiration at 60 minutes | Chest Circumference Measurement | 60 minutes | 
| Change from baseline xiphoid region chest circumference measurement during expiration at 60 minutes | Chest Circumference Measurement | 60 minutes | 
| Change from baseline subcostal region chest circumference measurement during inspiration at 60 minutes | Chest Circumference Measurement | 60 minutes | 
| Change from baseline subcostal region chest circumference measurement during expiration at 60 minutes | Chest Circumference Measurement | 60 minutes | 
| Change from baseline axillary region chest expansion test at 60 minutes | Chest Circumference Measurement | 60 minutes | 
| Change from baseline xiphoid region chest expansion test at 60 minutes | Chest Circumference Measurement | 60 minutes | 
| Change from baseline subcostal region chest expansion test at 60 minutes | Chest Circumference Measurement | 60 minutes | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Hamstring Muscle, Hamstring Shortness, Hamstring Stiffness, Myofascial Release Technique, Respiratory Functions, Respiratory Muscle Strength, Respiratory Muscle Endurance