The Effect of Blood Flow Restriction Applied During Nordic Hamstring Exercise

Study Overview
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Brief Summary
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The aim of this study is to investigate the effects of blood flow restriction applied during nordic hamstring exercise on neuromuscular activation and endothelial function.

Official Title
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The Effect of Blood Flow Restriction Applied During Nordic Hamstring Exercise on Neuromuscular Activation and Endothelial Function

Conditions
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Endothelial Dysfunction, Hamstring Injury

Intervention / Treatment
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* Other: Blood Flow Restriction


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Ankle arm index above 0.9 - Exclusion Criteria: Having chronic diseases such as coronary heart disease, kidney diseases, diabetes, uncontrollable hypertension Having a history of deep vein thrombosis Having a previous hamstring injury To smoke Having a Body Mass Index over 25 Having a history of major surgery

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 35 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
Interventional Model Description: randomized controlled single-blind study
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: blood flow restriction + Nordic hamstring exercise<br> | Other: Blood Flow Restriction<br>* After randomization, a cuff was placed proximal to one lower extremity. Blood flow was restricted from 60% of the arterial occlusion pressure. The other extremity was determined as the control group. 3x5 nordic hamstring exercises were performed. Surface emg was measured for hamstring muscles during exercise.<br>* Other names: Nordic Hamstring Exercise;|
| Experimental: Nordic hamstring exercise<br> | Other: Blood Flow Restriction<br>* After randomization, a cuff was placed proximal to one lower extremity. Blood flow was restricted from 60% of the arterial occlusion pressure. The other extremity was determined as the control group. 3x5 nordic hamstring exercises were performed. Surface emg was measured for hamstring muscles during exercise.<br>* Other names: Nordic Hamstring Exercise;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Endothelial function | Endothelial function was evaluated with flow-mediated dilation. | It was evaluated for the control and experimental extremities before exercise. | 
| Surface EMG | It was evaluated for the biceps femoris and semitendinosus muscles of the control and experimental extremities during Nordic hamstring exercise. | During exercise | 
| Endothelial function | Endothelial function was evaluated with flow-mediated dilation. | It was evaluated for the control and experimental extremities 15 minutes after exercise. ( Outcomes were evaluated as acute.) | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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blood flow restriction, nordic hamstring exercise, endothelial function, muscular activation