الفهرس 
Influence of smartphone addiction on cervical positioning sense and range of motion among undergraduate college students
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Abstract
Background the prevalence most popular gadget is increasing among under graduate students they use it for purpose other than science and learning, the long use of smart phone would be predisposing factor to musculoskeletal disorder, early neck pain, neck problems and poor work habits that load cervical as a work-related neck injury. Purpose this study was conducted to study the effect of smart phone addiction on cervical positioning sense, cervical Range of motion and neck function among undergraduate colleague students. Design Cross-sectional observational study. Methods one hundred students selected from different physical therapy colleges in Cairo based on self- reporting questionnaire smart phone addiction scale SAS sv for selection, the students were assigned into two groups (group A consist of group 62 students that are non {u2013}addicted smart phone participant users) and (group B consist of 38 students that are addicted smart phone users) , joint position sense, cervical ROM assessed by cervical range of motion CROM ,and Copenhagen neck function disability scale to assess neck function.