TITLE

EFFECT OF TWO BACKPACK DESIGNS ON COP DISPLACEMENT AND PLANTAR FORCE DISTRIBUTION IN CHILDREN DURING UPRIGHT STANCE

AUTHOR(S)
MASTALERZ, ANDRZEJ; NIŹNIKOWSKI, TOMASZ; BUSZTA, MARIUSZ; RÓŻAŃSKI, PAWEŁ; WIŚNIOWSKI, PAWEŁ; SADOWSKI, JERZY
PUB. DATE
September 2016
SOURCE
Polish Journal of Sport & Tourism;Sep2016, Vol. 23 Issue 3, p123
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Introduction. Many studies have compared different backpack designs and their influence on the carrier; however, no data referring to school students aged 7-8 years are currently available. Therefore, the aim of the research was to assess the influence of backpack design on centre of pressure (COP) displacement and plantar force distribution in children during an upright stance. Material and methods. Nineteen school students (9 males and 10 females) volunteered for the study. Two Polish backpacks intended for school use were evaluated: backpack A, which had two main compartments, and backpack B, which had one main compartment. The backpack load was composed of books, binders, and regular school equipment. During the measurements, the subjects were asked to look ahead with the head straight and arms at the sides in a comfortable position and to stand barefoot on the F-Scan® sensors (Tekscan, F-Scan®) attached to the force platform (Kistler), carrying a load corresponding to 10% of their body mass. Results. The study found insignificant differences between the two backpack designs. Moreover, COP parameters increased significantly during an upright stance while carrying backpack B in comparison to the empty backpack condition. Additionally, we observed significantly higher values of plantar force distribution in the heel region for the condition without load and insignificantly higher ones for carrying backpack A. Conclusions. The results of the current study suggest that the differences between the two backpack designs are too marginal to be detected through COP displacement. Disturbances in plantar force distribution suggest a lack of posture control and a lower stability of the standing position with a backpack, but these disturbances were significant only when the backpack with one main compartment was used.
ACCESSION #
120489802

 

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