The Acute Effects of Different Stretching Techniques

Study Overview
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Brief Summary
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The flexibility of the hamstring muscles is very important and many stretching methods are applied on the hamstring muscles for reducing muscle resistance on movement. The objective of this study was to investigate the acute effects of static stretching and the Mulligan traction straight leg raise (TSLR) technique administered to the hamstring muscles on reducing its resistance to movement by using ultrasound elastography in healthy individuals.

Detailed Description
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The study will be included 22 healthy male volunteers. Static stretching will be administered to the hamstring muscles in the first group and the Mulligan TSLR technique will be administered on the same muscle in the second group. Active knee extension angles of the individuals will be evaluated by a digital goniometer and muscle elasticity will be assessed by ultrasound elastography. Acute effects of Mulligan TSLR on reducing muscle resistance to movement will be evaluated by ultrasound elastography for the first time in this study. In our study, it was planned to examine the acute effects of static stretching and Mulligan TSLR techniques on reducing muscle resistance to movement by ultrasound elastography in healthy individuals with hamstring shortness.

Official Title
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The Acute Effects of Different Hamstring Muscle Stretching Techniques on Reducing Muscle Resistance to Movement by Ultrasound Elastography

Conditions
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Muscle Stretching Exercises, Hamstring Muscles

Intervention / Treatment
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* Behavioral: Static stretching
* Behavioral: Mulligan TSLR technique


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Participants with short hamstring muscles (active knee extension angle below 70 degree), Without knee, hip, ankle, or waist pathology, Who had not undergone any surgery on the lower extremity were included in the study. Exclusion Criteria: Individuals with musculoskeletal, neurological, or vestibular problems, Bone pathologies, Joint laxity, Diabetes, Metabolic syndrome, Arthritic or inflammatory problems were excluded.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 25 Years

Sexes Eligible for Study
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Male

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: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Static stretching<br>Static stretching will be administered to the hamstring muscles in the first group. | Behavioral: Static stretching<br>* Static stretching exercise will be performed under the supervision of a physiotherapist as 30 seconds of stretching and 15 seconds of rest with 10 repetitions, and the individuals will be asked to participate in the exercise actively.<br>|
| Experimental: Mulligan TSLR technique<br>The Mulligan TSLR technique will be administered on the same muscle in the second group. | Behavioral: Mulligan TSLR technique<br>* Mulligan TSLR will be applied by a physiotherapist in 3 repetitions with the patient in the supine position.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| The evaluation of muscle flexibility | The evaluation of muscle flexibility will be made using the ultrasound elastography method by a radiologist. | Five minutes after the application | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Range of motion (ROM) | Active knee extension angles of the individuals will be measured using a digital goniometer by a physiotherapist. | Five minutes after the application | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Hamstrings, Stretching exercises, Ultrasound elastography