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Journal of Healthcare Engineering
Volume 2017 (2017), Article ID 9342789, 6 pages
https://doi.org/10.1155/2017/9342789
Research Article

How Arch Support Insoles Help Persons with Flatfoot on Uphill and Downhill Walking

1Graduate Institute of Sport Coaching Science, Chinese Culture University, Taipei, Taiwan
2School of Sports Science, Nantong University, Jiangsu, China
3Department of Health Promotion and Gerontological Care, Taipei College of Maritime Technology, Taipei, Taiwan
4Global Action Inc., Taipei, Taiwan
5Department of Physical Education, Chinese Culture University, Taipei, Taiwan

Correspondence should be addressed to Hsien-Te Peng; wt.moc.oohay@gnep521dis

Received 22 December 2016; Revised 4 March 2017; Accepted 15 March 2017; Published 9 April 2017

Academic Editor: Wenxin Niu

Copyright © 2017 Yu-Ping Huang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The main purpose of this study was to investigate the effect of arch support insoles on uphill and downhill walking of persons with flatfoot. Sixteen healthy college students with flatfoot were recruited in this study. Their heart rate, peak oxygen uptake (VO2), and median frequency (MDF) of surface electromyogram were recorded and analyzed. Nonparametric Wilcoxon signed-rank test was used for statistical analysis. The main results were as follows: (a) peak VO2 significantly decreased with arch support insoles compared with flat insoles during uphill and downhill walking (arch support insole versus flat insole: uphill walking, 20.7 ± 3.6 versus 31.6 ± 5.5; downhill walking, 10.9 ± 2.3 versus 16.9 ± 4.2); (b) arch support insoles could reduce the fatigue of the rectus femoris muscle during downhill walking (MDF slope of arch support insole: 0.03 ± 1.17, flat insole: −6.56 ± 23.07); (c) insole hardness would increase not only the physical sensory input but also the fatigue of lower-limb muscles particularly for the rectus femoris muscle (MDF slope of arch support insole: −1.90 ± 1.60, flat insole: −0.83 ± 1.10) in persons with flatfoot during uphill walking. The research results show that arch support insoles could effectively be applied to persons with flatfoot to aid them during uphill and downhill walking.