Weight Variation on Cop

Impact of Weight Variation on Cop Displacement During Unperturbed Standing Conditions in Adolescents

This study will be conducted to investigate the impact of variant weights in adolescents during unperturbed standing conditions.

200 adolescents from both sexes will be assigned to this study. They will be selected randomly from a secondary school student and first level university students. They will be assigned into four group of equal numbers according to (BMI) body mass index for age percentile obese group (n=50), overweight group (n=50), underweight group (n=50) and normal group weight (n=50).The FREEMED platform and FREESTEP software were used to assess the following parameters for each subject:

1. Sway length (mm).
2. The Maximum (peak) Oscillation of COP.
3. The minimum Oscillation of COP.

Inclusion criteria:

• Their age will be ranging from 16 to 18 years.
• The sample will be selected according to (BMI-for Age percentile) growth charts according to CDC (Centers for Disease Control and Prevention) (appendix-1) (NCHS, 2014)
• All participant will be free from any musculoskeletal deformities.
• All participant are free of peripheral neuropathic diseases.
• They have no visual or auditory or vestibular disorders.
• They will able to understand, follow and execute instructions included in the testing analysis procedures.

Exclusion criteria:

• All adolescent associated with any musculoskeletal deformities.
• All adolescent associated with any foot deformity.
• All adolescent had a previous foot orthopedic procedure.
• All adolescent has visual or auditory or vestibular disorder.
• All adolescent has peripheral neuropathy.
• Adolescent with morbid obesity BMI >99th for age percentile (Barlow, 2007).