title: Standing balance on the ground -the influence of flatfeet and insoles.
abstract: [Purpose] The aim of this study was to determine whether insoles change standing balance on the ground in normal and flat-footed subjects. [Subjects] Twenty subjects with flatfeet and 20 subjects with normal feet were included in this study. [Methods] Body sway was evaluated based on the center of pressure while subjects stood on the ground. Body sway was measured during upright standing with the feet 10 cm apart for 30 seconds. The total locus length and the area of body sway were then measured using a zebris system. Measurements were made under three sets of conditions: using BMZ insoles, which supported the cuboid; using Superfeet insoles, which supported the medial longitudinal arch; and with no insoles. [Results] The 3 insole conditions were compared. On level ground, the total locus length for the Superfeet insole was significantly less than those for the BMZ insole and no insole. [Conclusion] On level ground, Superfeet feet insoles were effective in stabilizing standing balance in both flat-footed and normal-footed subjects.
authors.affiliation: Department of Physical Therapy, Faculty of Human Science, Hokkaido Bunkyo University, Japan ; Graduate School of Health Sciences, Sapporo Medical University, Japan.
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Takata
authors.affiliation: Department of Physical Therapy, Faculty of Human Science, Hokkaido Bunkyo University, Japan.
authors.forename: Shinji
authors.initials: S
authors.lastname: Matsuoka
authors.affiliation: Department of Occupational Therapy, Faculty of Human Science, Hokkaido Bunkyo University, Japan.
authors.forename: Nobuhisa
authors.initials: N
authors.lastname: Okumura
authors.affiliation: Department of Physical Therapy, Ibaraki Prefectural University of Health Science, Japan.
authors.forename: Koji
authors.initials: K
authors.lastname: Iwamoto
authors.affiliation: Takahashi Orthopaedic Clinic, Japan.
authors.forename: Mitsugu
authors.initials: M
authors.lastname: Takahashi
authors.affiliation: Division of Physical Therapy, Sapporo Medical University, Japan.
authors.forename: Eiichi
authors.initials: E
authors.lastname: Uchiyama
keywords: Flatfoot; Insole; Standing balance