Effect of Classic Ballet Practice on School Children's Postural Balance

Study Overview
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Brief Summary
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Is a parallel longitudinal protocol where half patients receive a experimental protocol and the other half receive orientation to maintain your daily live routine as usually. The experimental protocol include Ballet sessions. The hypothesis is interventional group will improve the balance control more than control group.

Official Title
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Effect of Classic Ballet Practice on School Children's Postural Balance: Randomized Clinical Trial

Conditions
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Child, Only

Intervention / Treatment
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* Other: Ballet


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Female sex 9 to 12 years of age Exclusion Criteria: Musculoskeletal pain at last 3 months Perform other physical activity besides scholar's physical activity Has been participated Ballet class.

Ages Eligible for Study
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Minimum Age: 9 Years
Maximum Age: 12 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: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Interventional Model Description: Two groups design where one group receives treatment and the other not in the same period of time.
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Ballet<br>Subjects who will receive the experimental protocol. | Other: Ballet<br>* The classic ballet classes will respect biological limits of children. The sessions will be 75 minutes long, twice a week during 8 weeks. The class sequence will be: warm-up, follow by exercises about upper and lower limbs ballet positions and sequences of ballet jumps, and at the end a cool-down.<br>|
| No Intervention: Control<br>Subjects who will not receive the experimental protocol, only will be on a wait list. | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change from baseline in total score of Star Excursion Balance Test at 8 weeks. | Changing between the beginning and end of intervention. This measure is shown in cm. | Before, immediate after intervention protocol | 
| Change from baseline in anteriorposterior and mediolateral displacements of Pressure Center at 8 weeks. | Changing between the beginning and end of intervention of anteroposterior and mediolateral displacements of pressure center in cm. | Before, immediate after intervention protocol | 
| Change from baseline in average speed of Pressure Center at 8 weeks. | Changing between the beginning and end of average speed of pressure center in cm/s. | Before, immediate after intervention protocol | 
| Change from baseline in 95% ellipse area of Pressure Center at 8 weeks. | Changing between the beginning and end of 95% ellipse area of pressure center in cm². | Before, immediate after intervention protocol | 
| Maintenance at 30 and 60 days from baseline in total score of Star Excursion Balance Test. | Changing between the end and 30 and 60 days after intervention. This measure is shown in cm. | Immediate after, 30 and 60 days after intervention protocol. | 
| Maintenance at 30 and 60 days from baseline in anteroposterior and mediolateral displacements of pressure center | Changing between the end and 30 and 60 days after intervention of anteroposterior and mediolateral displacements of pressure center in cm. | Immediate after, 30 and 60 days after intervention protocol. | 
| Maintenance at 30 and 60 days from baseline in average speed of pressure center | Changing between the end and 30 and 60 days after intervention of average speed of pressure center in cm/s. | Immediate after, 30 and 60 days after intervention protocol. | 
| Maintenance at 30 and 60 days from baseline in 95% ellipse area of pressure center | Changing between the end and 30 and 60 days after intervention of 95% ellipse area of pressure center in cm². | Immediate after, 30 and 60 days after intervention protocol. | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Vertical stiffness | Stiffness estimate by force plate data and displament of center of mass | Before, immediate after, 30 and 60 days after intervention protocol | 
| Peak and absortion rate of ground reaction force | Greatest value and absortion rate (between inicial contat and peak) of ground reaction force | Before, immediate after, 30 and 60 days after intervention protocol | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Postural Balance, Dance Therapy, Exercise Therapy