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An individually moulded insole with 5-mm medial arch support reduces peak impact and loading at the heel after a one-hour treadmill run

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posted on 11.08.2020, 08:12 authored by Daniel FongDaniel Fong, Ken Lue, Mandy Chung, Vikki Chu, Patrick Yung
Background: Foot pain experienced by long-distance runners could be relieved by functional insoles which aim at evenly distributing the plantar pressure. Research question: We hypothesised that an individually moulded insole with medial arch support would reduce the impact and loading under the heel and metatarsal regions. Methods: Twelve male recreational runners ran on a treadmill at 10 km/h for 1 hour with flat insoles and medial arch supported insoles. A pressure insole system (Novel Pedar, Germany) was used to obtain the peak pressure, peak force, time normalised pressure-time integrals, and the percentage of the total force-time integrals under 10 regions. Results: Medial arch supported insoles reduced the peak force under the heel (medial: -15.3%, p = 0.001; lateral: -19.2%, p = 0.037) during the initial run, and reduced peak pressure under the heel (medial: -13.3%, p = 0.005; lateral: -9.9%, p = 0.006), and peak force under the medial heel (-17.8%, p = 0.006) after the run. The percentage of the total force-time integrals under the heel was reduced (medial: -23.8%, p = 0.004; lateral: -13.6%, p = 0.022) after the run. No significant difference was found under the metatarsal regions. There is shift of load from the metatarsal regions to the medial mid-foot as indicated by the change of the percentage of total force-time integrals. Significance: Medial arch supported insoles were effective in reducing the impact and loading under the heel region in prolonged running on a treadmill. Level of evidence: Controlled laboratory study, Level V

History

School

  • Sport, Exercise and Health Sciences

Published in

Gait and Posture

Volume

82

Pages

90-95

Publisher

Elsevier

Version

AM (Accepted Manuscript)

Rights holder

© Elsevier

Publisher statement

This paper was accepted for publication in the journal Gait and Posture and the definitive published version is available at https://doi.org/10.1016/j.gaitpost.2020.08.109

Acceptance date

06/08/2020

Publication date

2020-08-13

Copyright date

2020

ISSN

0966-6362

Language

en

Depositor

Dr Daniel Fong Deposit date: 6 August 2020