Weight Variations Impacts on the Ankle of the Child

Study Overview
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Brief Summary
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Obesity is a global health problem. It changes the measurement of the human body and makes a big change to move the body. The increased weight and mass change the way the limbs and whole body generate and react to force Excess fat also interferes with joint-muscle interactions that are important for functional capacity and postural balance The tendency to increase the thickness of the abdomen contributes to anterior movement of the COM of the body. The purpose of the study is to investigate the biomechanical effect of weight on foot stability in children.

Official Title
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Weight Variations Impacts on the Ankle of the Child

Conditions
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Ankle Injuries, Risk of Falling, Stability

Participation Criteria
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Eligibility Criteria
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Inclusion criteria: Their age will be ranging from 7 to 9 years. All children have normal stature for age percentile according to CDC chart. The sample will include both sex and will be divided in to 4 groups according to the CDC (Centers for Disease Control and Prevention) growth charts All children are normal &perform all activities of daily living They were able to understand and follow verbal commands and instructions included in the testing procedures. Exclusion criteria: All of them could be part of recreational activities in their public schools but no competitive sports. Children who participated in any regular sport activities involving the lower extremities will be excluded. None of them had any surgical intervention in the lower extremities. None of them had any history of musculoskeletal deformities or neuromuscular disorders. They had neither visual, auditory defect.

Ages Eligible for Study
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Minimum Age: 7 Years
Maximum Age: 9 Years

Sexes Eligible for Study
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All

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| healthy<br>Children in this group will be healthy category according to CDC (Centers for Disease Control and Prevention) growth chart which ranged from BMI-for-age 5th to 85th percentiles | |
| overweight<br>Children in this group will be overweight category according to CDC (Centers for Disease Control and Prevention) growth chart which ranged from BMI-for-age 85th to 95th percentiles . | |
| obese<br>Children in this group will be obese category according to CDC chart which ranged from BMI-for-age > 95th percentiles | |
| underweight<br>Children in this group will be underweight category according to CDC chart ranged from BMI-for-age < 5th percentiles | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| risk of falling in static and dynamic situations for each group | The Biodex Balance System will be used to assess risk of falling | assessed immediately after the procedure | 
| dynamic level of stability for each group | The Biodex Balance System will be used to assess level of instability | assessed immediately after the procedure | 
| dynamic Postural stability for each group | The Biodex Balance System will be used to assess Postural stability | aassessed immediately after the procedure | 
| ankle muscles peak and angle specific torque, power and work for each group | Isokinetic dynamometer will be used to assess ankle muscles (plantarflexors, dorsiflexors, inverstors and evertors muscles). it will be assess the peak and angle specific torque, power and work for those muscles. | assessed immediately after the procedure |