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Open AccessArticle

The Influence of the Schoolbag on Standing Posture of First-Year Elementary School Students

1
Department of Physiotherapy, University of Applied Health Sciences, 10000 Zagreb, Croatia
2
Department of Occupational Therapy, University of Applied Health Sciences, 10000 Zagreb, Croatia
3
Faculty of Kinesiology, University of Zagreb, 10000 Zagreb, Croatia
*
Author to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2019, 16(20), 3946; https://doi.org/10.3390/ijerph16203946
Received: 10 September 2019 / Revised: 9 October 2019 / Accepted: 14 October 2019 / Published: 16 October 2019
(This article belongs to the Section Children's Health)
The purpose of this study was to determine the influence of the mass of a schoolbag on standing posture in first-year elementary school children. First-year elementary school students (n = 76) participated in this study. The data was digitized and analyzed using SkillSpector and Kinovea. Results have shown a change of Center of Gravity (COG) position in all three anatomical planes (p < 0.01), as well as a change in two out of three measured postural angles—craniovertebral (p < 0.01) and craniocervical (p < 0.01) angle. The most important aspect of changed posture, anterior shift of COG, was measured to be 2.4 cm and was in moderate negative correlation with student body mass (−0.4, p < 0.01) and height (−0.4, p < 0.01) when students were encumbered with a schoolbag weighing 16.11% of their body mass, on the average. Also, this study confirms that when encumbered, students’ head posture shifts to a more protracted position. View Full-Text
Keywords: center of gravity shift; anterior pelvic tilt angle; craniovertebral angle; craniocervical angle; kinematics center of gravity shift; anterior pelvic tilt angle; craniovertebral angle; craniocervical angle; kinematics
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Jurak, I.; Rađenović, O.; Bolčević, F.; Bartolac, A.; Medved, V. The Influence of the Schoolbag on Standing Posture of First-Year Elementary School Students. Int. J. Environ. Res. Public Health 2019, 16, 3946.

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