Evaluation of Balance and Trunk Muscle Endurance in Dancers

Study Overview
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Brief Summary
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This study evaluates endurance of trunk muscles, balance and pulmonary functions in dancers. The participants will be evaluated trunk muscles endurance, pulmonary functions and balance which evaluated by computerized force plate system.

Detailed Description
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Dance is a form of exercise associated with movements that require balance, flexibility, endurance and skill. In addition to maintaining balance, the endurance of the trunk stabilizer muscles has an important role in sport-specific activities, coordination and athletic performance. Studies which conducted on dancers are mainly focused on abdominal muscle strength / endurance, lower extremity strength and physical performance. In the literature, it was reported that 40-84% of professional dancers and 26-51% of professional dancers had musculoskeletal injuries, particularly lower extremity problems. It is very important to regain balance after returning to the dance after foot and ankle injuries. Considering the function of the trunk as a bridge between the lower and upper extremities, it is known that trunk muscles play a fundamental role in regaining balance. However, in the literature, there is no study showing the effects of trunk stabilizer muscles (abdominal, dorsal extensor, lateral flexor and diaphragm), trunk flexibility and dance-specific properties on balance in dancers. As a result of this study, it is aimed to show the effect of dance on balance and related parameters and to reveal the factors affecting the balance.

Official Title
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Evaluation of Balance, Trunk Muscle Endurance and Pulmonary Functions in Dancers

Conditions
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Balance; Distorted, Sports Injury

Intervention / Treatment
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* Other: Balance analysis


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: able and willing to complete the informed consent process. performing a sportive latin dancers as a competitive Exclusion Criteria: having a pulmonary system disease having a cardiac system disease to do regular sports in addition to danc for the last three months

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 50 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: Screening
Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Experimental Group: Balance analysis<br>fifty dancers will be evaluated in this study.Trunk muscle endurance, pulmonary functions and balance will be assessed. | Other: Balance analysis<br>* Balance analysis is assessment method to estimate deterioration of postural control.<br>|
| Active Comparator: Control Group:Balance Analysis<br>fifty healthy subjects will be evaluated in this study.Trunk muscle endurance, pulmonary functions and balance will be assessed. | Other: Balance analysis<br>* Balance analysis is assessment method to estimate deterioration of postural control.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Limits of Stability | Limits of stability test evaluates dynamic balance of participants. Computerized balance system measured limits of stability for forward, backward, right and left side movements. It calculates the maximum distance a person can lean without losing balance. The unit of measure is centimeters. The higher value is indicated the better balance | 10 minutes | 
| Postural sway | Postural sway in centimeters by computerized balance system | 10 minutes | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Forced Vital Capacity | It is the total amount of air exhaled during the test. After three trial, the best forced vital capacity value is the outcome | 15 minutes | 
| Forced Expiratory Volume in 1 Second | Forced Expiratory Volume in 1 Second is the volume exhaled during the first second of a forced expiratory maneuver started from the level of total lung capacity. After three trial, the best FVC value is the outcome. | 15 minutes | 
| Forced Expiratory Volume in 1 Second / Forced Vital Capacity | The ratio of Forced Expiratory Volume in 1 Second / Forced Vital Capacity. This formule is calculated by measuring device. After three trial, the best value is the outcome | 15 minutes | 
| Maximal Inspiratory Pressure | It is a measure of the strength of inspiratory muscles, primarily the diaphragm. It is obtained by having the patient inhale as strongly as possible against a mouthpiece. After three trial, the best value is the outcome. | 15 minutes | 
| Maximal Expiratory Pressure | It is a measure of the strength of respiratory muscles, obtained by having the patient exhale as strongly as possible against a mouthpiece. After three trial, the best value is the outcome. | 15 minutes | 
| Peak Expiratory Flow | Peak Expiratory Flow is a person's maximum speed of expiration, as measured with a peak flow meter, a small, hand-held device used to monitor a person's ability to breathe out air. After three trial, the best value is the outcome. | 15 minutes | 
| forced expiratory flow | Forced expiratory flow is the flow (or speed) of air coming out of the lung during the middle portion of a forced expiration. | 15 minutes | 
| Trunk muscle endurance | The time to maintain the specified positions is recorded. | 15 minutes | 
| Trunk flexibility | To measure flexibility, the participant will be instructed to push the yardstick placed at the edge of the box while holding the legs straight and the hands parallel to the floor as far as she could. this test in centimeters by measuring tape. | 1 minutes | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Balance, Dancer, Respiratory muscle, Trunk muscle