%0 Journal Article
%T The effect of backpack weight on vertebral column deformity of high school girl students
%A Leila Samaei
%J -
%D 2014
%X The aim of present study is analysing the effects of students¡¯ backpack¡¯s weight on deformity of their shoulder and vertebral column. In order to do this examination a group of high school girl studentsin Qazvin city are chosen as the statistical society. The measurement instruments include posture screen, meters, scales and questionnaires. The independent variable is the backpack¡¯s weight and the dependent variables are skeletal defects involving unsymmetrical shoulder, scapula asymmetry and deviation of vertebral column. 45 studentscarriedschool backpacks of 10%, 12.5%, 15% and 17.5% bodyweight for 20 minutes. The results show carrying backpacksof 10% bodyweight does not have noticeable effect on progress of dropped shoulder deficiency during the first 5 minutes; however, its destructive impact will appear by passage of time. It is also observed that in the case of heavier backpacksof 12.5%, 15% and 17.5% bodyweight, the harmful effect ofbackpacks loads on the shoulder asymmetry is beingstarted from the first moment
%K Fatemeh Mohammad Beigi and Leila Samaei
%K Dropped shoulder
%K Vertebral column
%K Unsymmetrical shoulder
%K Skeletal defects
%K Backpacks
%U https://www.imedpub.com/abstract/the-effect-of-backpack-weight-on-vertebral-column-deformity-of-high-school-girl-students-15178.html