Abstract
Objectives: This study aims to investigate the effects of various schoolbag loads on the cervical posture during stance and after walking.
Patients and methods: Between January 2014 and June 2014, a total of 100 schoolchildren (50 boys, 50 girls; mean age 12.05 +/- 3.71 years; range 10 to 15 years) were included in the study. The craniovertebral protrusion and side bending angle of the neck were measured using the cervical range of motion instrument in the neutral position and after carrying a schoolbag with weights of 5%, 10% and 15% of body weights during stance and after walking 100 meters.
Results: There was a statistically significant relationship between sex, various backpack weights, condition, and the forward/side head postural compensation in schoolchildren. Among female students, 5%, 10% and 15% of body weight loads significantly increased the craniovertebral protrusion and side bending angle of the neck during stance and after walking. Among male students, only 10% and 15% of body weight loads significantly changed the craniovertebral protrusion and side bending angle of the neck during stance and after walking (p <=.0.05).
Conclusion: Based on our study results, a schoolbag should not be more than 5% of body weight among the female students and 10% of body weight among male students. Otherwise, it will be a risk factor for postural and musculoskeletal problems either immediately or during adulthood.