Acute Effect of Static Stretching and Muscle Warming on the Functional Performance of College Volleyball Athletes

Study Overview
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Brief Summary
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The purpose of this study is analyze the effects of static stretching and active warm up, isolated and associated, in functional performance of the lower limbs in college volleyball athletes. Study hypothesis: H0: The stretching and / or warm up, alone or in combination, do not alter the functional performance of volleyball players. H1: The stretching and / or warm up, alone or in combination, alter the functional performance of volleyball players.

Detailed Description
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This is a cross-over study containing 11 volleyball athletes randomly divided into 5 groups: control (C), warming-up (gAQ), stretching (gAL), warming-up and stretching (gAQAL), stretching and warming-up (gALAQ). All subjects underwent the evaluation measures of functional performance that were conducted pre and post intervention.

Conditions
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Neuromuscular Manifestations

Intervention / Treatment
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* Other: Static Stretching
* Other: warm up
* Other: static stretching + warm up
* Other: warm up+static stretching
* Other: Control


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: being male; were aged between 18 and 28 years of age; no previous history of orthopedic disorders, rheumatic disorders, cardiovascular, metabolic and / or vestibular and neurological disorders that prevent them from participating in the study dysfunctions; no history of injury, trauma or disease in the lower limbs in the last six months, without surgery; participate in the University Selection UFRN; training time display mode in the above two years with a frequency of at least three times a week. Exclusion Criteria: presence of injury during the survey period; not conduct evaluative and intervention procedures; waiver to participate.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 28 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: Prevention
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: static stretching<br>group of 11 volunteers (gSS) | Other: Static Stretching<br>* 3 sets of 30-second self static hamstring stretch (IT), quadriceps (QD) and sural triceps (TS) of both lower limbs, with an interval of 30 seconds of rest between sets<br>|
| Experimental: warm up -<br>group of 11 volunteers (gWU) | Other: warm up<br>* Warm-up for 10 minutes at 70-80% of maximum heart rate.<br>|
| Experimental: static stretching + warm up<br>(group of 11 volunteers - SS+WU) | Other: static stretching + warm up<br>* 3 sets of 30-second self static hamstring stretch (IT), quadriceps (QD) and sural triceps (TS) of both lower limbs, with an interval of 30 seconds of rest between sets + Warm-up for 10 minutes at 70-80% of maximum heart rate.<br>|
| Experimental: warm up+static stretching<br>(group of 11 volunteers - WU+SS) | Other: warm up+static stretching<br>* Warm-up for 10 minutes at 70-80% of maximum heart rate + 3 sets of 30-second self static hamstring stretch (IT), quadriceps (QD) and sural triceps (TS) of both lower limbs, with an interval of 30 seconds of rest between sets<br>|
| Other: Control Group<br>No intervention - athletes rested | Other: Control<br>* No intervention<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Muscle Power | Power measured by Jump System | Evaluation of power after fifteen minutes the application of intervention | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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exercise muscle stretching, electromyography