Scapular Stabilization During Manual Horizontal Adduction Stretches and Its Effect on Increasing Posterior Shoulder Flexibility

Study Overview
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Brief Summary
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The purpose of this study is to determine if stabilizing the scapula (shoulder blade) during a common shoulder stretch is more effective at improving shoulder range of motion than not stabilizing the scapula. Investigators hypothesize that scapular stabilization during horizontal adduction stretching will demonstrate greater gains in shoulder range of motion than stretching without scapular stabilization.

Official Title
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The Effect of Scapular Stabilization During Horizontal Adduction Stretching on Passive Internal Rotation and Posterior Shoulder Tightness in Young Female Volleyball Athletes.

Conditions
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Posterior Shoulder Tightness

Intervention / Treatment
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* Other: horizontal adduction stretch with scapular stabilization
* Other: Horizontal adduction stretch without scapular stabilization


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: athletes with at least two years of volleyball experience athletes with no current shoulder pain athletes between the ages of 15 and 21 athletes with a 10 degree or greater difference in internal rotation between shoulders Exclusion Criteria: athletes currently experiencing shoulder pain athletes having less than two years of volleyball experience athletes not meting inclusion criteria

Ages Eligible for Study
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Minimum Age: 15 Years
Maximum Age: 21 Years

Sexes Eligible for Study
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Female

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: Prevention
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Other: Horizontal adduction stretch without scapular stabilization<br>Scapular stabilization is not provided during a manual horizontal adduction stretch of the shoulder. Each stretch is held for 25 seconds and repeated for a total of 3 times. | Other: Horizontal adduction stretch without scapular stabilization<br>* Scapula stabilization is not performed during horizontal adduction stretch<br>|
| Other: Horizontal adduction with scapular stabilization<br>Scapular stabilization is provided during a manual horizontal adduction stretch of the shoulder. Each stretch is held for 25 seconds and repeated for a total of 3 times. | Other: horizontal adduction stretch with scapular stabilization<br>* Scapular is stabilized during manual horizontal adduction stretch<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in Posterior Shoulder Tightness | An inclinometer is used to measure posterior shoulder tightness. | Change from baseline posterior shoulder tightness to immediately following manual stretching. The baseline is measured, followed by 3 stretches held for 25 seconds and then the follow up measure is taken. This is the conclusion of this measure. | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in Internal Rotation | An inclinometer is used to measure internal rotation | Change from baseline internal rotation to immediately following manual stretching. The baseline is measured, followed by 3 stretches held for 25 seconds and then the follow up measure is taken. This is the conclusion of this measure. | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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glenohumeral internal rotation deficit, overhead athlete, shoulder exercise, posterior glenohumeral capsule, posteroinferior glenohumeral ligament, posterior rotator cuff