Comparison the Effect of Smart Phones Addiction Between Children and Adolescents on Posture Deviations , Physical Fitness and Intelligence in Egypt

Inclusion Criteria: * Subjects with the following criteria will be enrolled in this study : The participants will be from middle childhood to adolescents and their age will be ranged from 9to 18 years. They had Body Mass Index (BMI) = 18.5 :40 . They have a score of 24 or more on the Smart phones addiction scale-short version. Exclusion Criteria: * Subjects will be excluded from the study if the participant has the followings that affect that study: visual or hearing defects, cachexia, any neurological disorders and musculoskeletal problems, any congenital abnormalities .