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J Phys Ther Sci. 2015 Mar;27(3):747-9. doi: 10.1589/jpts.27.747. Epub 2015 Mar 31.

Effect of backpack position on foot weight distribution of school-aged children.

Author information

1
Department of Physical Therapy, College of Rehabilitation Science, Daegu University, Republic of Korea.
2
Department of Physical Therapy, College of Health Science, Cheongju University, Republic of Korea.

Abstract

[Purpose] In the present study, we aimed to determine the effects of backpack position on foot weight distribution of standing school-aged children. [Subjects] Thirty school-aged children volunteered to participate in this study. [Methods] The subjects randomly performed four types of carrying a backpack: no backpack (condition-1), carrying a backpack at C7 (condition-2), carrying a backpack at 10 cm below C7 (condition-3), and carrying a backpack at 20 cm below C7 (condition-4). [Results] Statistically significant differences were noted in the anterior and posterior pressure values, and in the anterior-to-posterior ratio, among the four conditions (p < 0.05). Post-hoc analysis indicated that the pressure value of condition-4 was significantly lower in the anterior foot region and higher in the posterior foot region than in condition-2 and condition-3. In addition, the anterior-to-posterior ratio was lower in condition-4 than in condition-2 and condition-3. [Conclusion] These findings suggest that carrying a backpack in a higher position, with fastening of the shoulder strap, may be more favorable for normalizing the foot weight distribution.

KEYWORDS:

Backpack position; Children; Weight distribution

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