Quadriceps Concentric vs Eccentric

Study Overview
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Brief Summary
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The aim of the study is to compare the effects of concentric and eccentric exercises on muscle strength, muscle thickness and balance in healthy Individuals. Participants will randomly be divided into 2 groups: Concentric exercise (CE) group, eccentric exercise (EE) group. Concentric exercise group will be doing 2 concentric exercises and eccentric exercise group will be doing 2 eccentric exercise for 8 weeks. The evaluations will be repeated after 8 weeks of training to reveal the effects of concentric and eccentric exercises.

Official Title
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Effect of Different Izotonic Quadriceps Exercise Training on Muscle Strength, Muscle Thickness and Balance in Healthy Individuals

Conditions
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Healthy

Intervention / Treatment
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* Other: Concentric exercises
* Other: Eccentric exercises


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Age between 18-25 Healthy individuals Able to read, write and understand Turkish Willing and able to attend study Exclusion Criteria: Any neurological, musculoskeletal or vascular disease in any of the lower extremity Having lower extremity musculoskeletal pain Previous history of surgery in any of the lower extremity Mental and cognitive disorders that would seriously affect cooperation

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


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Concentric Exercises<br>2 different concentric exercises will be done 3 times a week for 8 weeks. | Other: Concentric exercises<br>* Resistance concentric straight leg raise and knee extension will be done.<br>|
| Experimental: Eccentric Exercises<br>2 different eccentric exercises will be done 3 times a week for 8 weeks. | Other: Eccentric exercises<br>* Resistance eccentric straight leg raise and knee extension will be done.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in muscle thickness | Change in muscle thickness will be measured by using Ultrasound | Before training and after 8 weeks of training | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in muscle strength | Change in muscle strength will be assessed by using hand-held dynamometer. | Before training and after 8 weeks of training | 
| Change in balance | Change in balance will be measured by using Biodex Balance System. | Before training and after 8 weeks of training | 
| Change in function | Change in function will be measured by using single leg hop test | Before training and after 8 weeks of training | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Muscle thickness, muscle strength, hop Test, Balance, performance