Contoured in-shoe foot orthoses increase mid-foot plantar contact area when compared with a flat insert during cycling

  • Bousie J
  • Blanch P
  • McPoil T
 et al. 
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Abstract

Objectives: To determine the effect of contouring of an in-shoe foot orthosis on plantar contact area and surface pressure, as well as perceived comfort and support at the foot-orthosis interface during stationary cycling. Design: A randomised, repeated measures control study. Methods: Twelve cyclists performed steady-state seated cycling at a cadence of 90rpm using a contoured orthosis and a flat insert of similar hardness. Contact area (CA) and plantar mean pressure (PP) were measured using the PEDAR®system, determined for seven discrete plantar regions and represented as the percentage of the total CA and PP respectively (CA% and PP%). Perceived comfort and support were rated using a visual analogue scale (VAS). Results: The contoured orthosis produced a significantly greater CA% at the medial midfoot (p=0.001) and lateral midfoot (p=0.009) with a standardised mean difference (SMD) of 1.3 and 0.9 respectively. The contoured orthosis also produced a significantly greater PP% at the hallux (p=0.003) compared to the flat insert with a SMD of 1.1. There was a small non-significant effect (SMD

Author-supplied keywords

  • Biomechanics
  • Cycling
  • Foot
  • Orthotic devices
  • Pedobarography
  • Shoes

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Authors

  • Jaquelin A. Bousie

  • Peter Blanch

  • Thomas G. McPoil

  • Bill Vicenzino

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