title: The effects of shoe fit on gait in community-dwelling older adults.
abstract: Shoes have a beneficial function in physical performance, particularly for gait. The purpose of this study was to investigate the association of shoe fit with gait parameters in community-dwelling older people. The fit of habitual shoes (HS) was evaluated in healthy older subjects and subjects were classified into well-fit (n=48) and poorly-fit (n=37) groups. The sizes of their feet were measured using an optical laser scanning system to provide newly-fitted shoes (NFS). Gait experiments were performed while wearing HS and NFS, separately. Trunk linear accelerations were measured along the vertical, anteroposterior and mediolateral axes using a tri-axial accelerometer attached to the L3 spinous process. Measurements were sampled at 200-Hz during a 20-m gait task at a self-selected speed. After signal processing, the gait velocity, stride duration, stride length and gait regularity (Reg) were obtained. Among the poorly-fit group, 86% wore shoes that were too loose. Subjects wearing ill-fitting shoes had a tendency to walk slower, had shorter stride lengths and lower Reg in the vertical direction than those wearing well-fitting shoes. Whereas NFS increased the gait velocity, the stride length and the Reg in the vertical direction, the increases in subjects that previously wore ill-fitting HS was significantly greater than in subjects that originally wore well-fitting HS. In conclusion, our study indicates that a significant proportion of older adults wear ill-fitting shoes and that well-fitting shoes are important to improve gait performance.
authors.affiliation: Department of Rehabilitation Science, Kobe University Graduate School of Health Sciences, 7-10-2 Tomogaoka, Suma-ku, Kobe 654-0142, Hyogo, Japan. take-d@ncgg.go.jp
authors.forename: Takehiko
authors.initials: T
authors.lastname: Doi
authors.forename: Ryota
authors.initials: R
authors.lastname: Yamaguchi
authors.forename: Tsuyoshi
authors.initials: T
authors.lastname: Asai
authors.forename: Minoru
authors.initials: M
authors.lastname: Komatsu
authors.forename: Daisuke
authors.initials: D
authors.lastname: Makiura
authors.forename: Masanori
authors.initials: M
authors.lastname: Shimamura
authors.forename: Soichiro
authors.initials: S
authors.lastname: Hirata
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Ando
authors.forename: Masahiro
authors.initials: M
authors.lastname: Kurosaka
mesh_terms: D000054:Acceleration; D000368:Aged; D001696:Biomechanical Phenomena; D016009:Chi-Square Distribution; D005260:Female; D005684:Gait / Q000502:physiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012775:Shoes; D012815:Signal Processing, Computer-Assisted