Hardness and posting of foot orthoses modify plantar contact area, plantar pressure, and perceived comfort when cycling

Jaquelin A Bousie, Peter Blanch, Thomas G McPoil, Bill Vicenzino

Research output: Contribution to journalArticle

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Abstract

OBJECTIVES: To evaluate the effects of hardness and posting of orthoses on plantar profile and perceived comfort and support during cycling.

DESIGN: A repeated measures study with randomised order of orthoses, hardness, and posting conditions.

METHODS: Twenty-three cyclists cycled at a cadence of 90rpm and a perceived exertion rating of twelve. Contoured soft and hard orthoses with or without a medial forefoot or lateral forefoot post were evaluated. Plantar contact area, mean pressure and peak pressure were measured for nine plantar regions using the pedar®-X system and represented as a percentage of the total (CA%, MP%, and PP% respectively). Perceived comfort and support was rated on a visual analogue scale.

RESULTS: The softer orthosis significantly increased CA% (p=0.014) across the midfoot and heel with a decrease in the toe region and forefoot. MP% (p=0.034) and PP% (p=0.012) were significantly increased at the mid and lateral forefoot with reductions in MP% at the midfoot and in PP% at the hallux and toes. Forefoot posting significantly increased CA% (p=0.018) at the toes and forefoot and decreased it at the heel. PP% was significantly altered (p=0.013) based on posting position. Lateral forefoot posting significantly decreased heel comfort (p=0.036).

CONCLUSION: When cycling, a soft, contoured orthosis increased contact across the midfoot and heel, modulating forefoot and midfoot plantar pressures but not altering comfort or support. Forefoot postings significantly modified contact areas and plantar pressures and reduced comfort at the heel.

Original languageEnglish
Pages (from-to)691-696
Number of pages6
JournalAustralian Journal of Science and Medicine in Sport
Volume21
Issue number7
Early online date26 Nov 2017
DOIs
Publication statusPublished - Jul 2018

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Foot Orthoses
Orthotic Devices
Heel
Hardness
Toes
Pressure
Hallux
Visual Analog Scale

Cite this

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title = "Hardness and posting of foot orthoses modify plantar contact area, plantar pressure, and perceived comfort when cycling",
abstract = "OBJECTIVES: To evaluate the effects of hardness and posting of orthoses on plantar profile and perceived comfort and support during cycling.DESIGN: A repeated measures study with randomised order of orthoses, hardness, and posting conditions.METHODS: Twenty-three cyclists cycled at a cadence of 90rpm and a perceived exertion rating of twelve. Contoured soft and hard orthoses with or without a medial forefoot or lateral forefoot post were evaluated. Plantar contact area, mean pressure and peak pressure were measured for nine plantar regions using the pedar{\circledR}-X system and represented as a percentage of the total (CA{\%}, MP{\%}, and PP{\%} respectively). Perceived comfort and support was rated on a visual analogue scale.RESULTS: The softer orthosis significantly increased CA{\%} (p=0.014) across the midfoot and heel with a decrease in the toe region and forefoot. MP{\%} (p=0.034) and PP{\%} (p=0.012) were significantly increased at the mid and lateral forefoot with reductions in MP{\%} at the midfoot and in PP{\%} at the hallux and toes. Forefoot posting significantly increased CA{\%} (p=0.018) at the toes and forefoot and decreased it at the heel. PP{\%} was significantly altered (p=0.013) based on posting position. Lateral forefoot posting significantly decreased heel comfort (p=0.036).CONCLUSION: When cycling, a soft, contoured orthosis increased contact across the midfoot and heel, modulating forefoot and midfoot plantar pressures but not altering comfort or support. Forefoot postings significantly modified contact areas and plantar pressures and reduced comfort at the heel.",
keywords = "Journal Article, Bicycling, Posting, Orthotic devices, Wedges, Pedobarometry, Foot",
author = "Bousie, {Jaquelin A} and Peter Blanch and McPoil, {Thomas G} and Bill Vicenzino",
note = "Copyright {\circledC} 2017. Published by Elsevier Ltd.",
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language = "English",
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Hardness and posting of foot orthoses modify plantar contact area, plantar pressure, and perceived comfort when cycling. / Bousie, Jaquelin A; Blanch, Peter; McPoil, Thomas G; Vicenzino, Bill.

In: Australian Journal of Science and Medicine in Sport, Vol. 21, No. 7, 07.2018, p. 691-696.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Hardness and posting of foot orthoses modify plantar contact area, plantar pressure, and perceived comfort when cycling

AU - Bousie, Jaquelin A

AU - Blanch, Peter

AU - McPoil, Thomas G

AU - Vicenzino, Bill

N1 - Copyright © 2017. Published by Elsevier Ltd.

PY - 2018/7

Y1 - 2018/7

N2 - OBJECTIVES: To evaluate the effects of hardness and posting of orthoses on plantar profile and perceived comfort and support during cycling.DESIGN: A repeated measures study with randomised order of orthoses, hardness, and posting conditions.METHODS: Twenty-three cyclists cycled at a cadence of 90rpm and a perceived exertion rating of twelve. Contoured soft and hard orthoses with or without a medial forefoot or lateral forefoot post were evaluated. Plantar contact area, mean pressure and peak pressure were measured for nine plantar regions using the pedar®-X system and represented as a percentage of the total (CA%, MP%, and PP% respectively). Perceived comfort and support was rated on a visual analogue scale.RESULTS: The softer orthosis significantly increased CA% (p=0.014) across the midfoot and heel with a decrease in the toe region and forefoot. MP% (p=0.034) and PP% (p=0.012) were significantly increased at the mid and lateral forefoot with reductions in MP% at the midfoot and in PP% at the hallux and toes. Forefoot posting significantly increased CA% (p=0.018) at the toes and forefoot and decreased it at the heel. PP% was significantly altered (p=0.013) based on posting position. Lateral forefoot posting significantly decreased heel comfort (p=0.036).CONCLUSION: When cycling, a soft, contoured orthosis increased contact across the midfoot and heel, modulating forefoot and midfoot plantar pressures but not altering comfort or support. Forefoot postings significantly modified contact areas and plantar pressures and reduced comfort at the heel.

AB - OBJECTIVES: To evaluate the effects of hardness and posting of orthoses on plantar profile and perceived comfort and support during cycling.DESIGN: A repeated measures study with randomised order of orthoses, hardness, and posting conditions.METHODS: Twenty-three cyclists cycled at a cadence of 90rpm and a perceived exertion rating of twelve. Contoured soft and hard orthoses with or without a medial forefoot or lateral forefoot post were evaluated. Plantar contact area, mean pressure and peak pressure were measured for nine plantar regions using the pedar®-X system and represented as a percentage of the total (CA%, MP%, and PP% respectively). Perceived comfort and support was rated on a visual analogue scale.RESULTS: The softer orthosis significantly increased CA% (p=0.014) across the midfoot and heel with a decrease in the toe region and forefoot. MP% (p=0.034) and PP% (p=0.012) were significantly increased at the mid and lateral forefoot with reductions in MP% at the midfoot and in PP% at the hallux and toes. Forefoot posting significantly increased CA% (p=0.018) at the toes and forefoot and decreased it at the heel. PP% was significantly altered (p=0.013) based on posting position. Lateral forefoot posting significantly decreased heel comfort (p=0.036).CONCLUSION: When cycling, a soft, contoured orthosis increased contact across the midfoot and heel, modulating forefoot and midfoot plantar pressures but not altering comfort or support. Forefoot postings significantly modified contact areas and plantar pressures and reduced comfort at the heel.

KW - Journal Article

KW - Bicycling

KW - Posting

KW - Orthotic devices

KW - Wedges

KW - Pedobarometry

KW - Foot

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JO - Australian Journal of Science and Medicine in Sport

JF - Australian Journal of Science and Medicine in Sport

SN - 1440-2440

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