Effects of different medial arch support heights on rearfoot kinematics.

Wahmkow, Gunnar; Cassel, Michael; Mayer, Frank; Baur, Heiner (2017). Effects of different medial arch support heights on rearfoot kinematics. PLoS ONE, 12(3), pp. 1-11. PLOS 10.1371/journal.pone.0172334

[img]
Preview
Text
file.pdf - Published Version
Available under License Creative Commons: Attribution (CC-BY).

Download (1MB) | Preview

Background Foot orthoses are usually assumed to be effective by optimizing mechanically dynamic rearfoot configuration. However, the effect from a foot orthosis on kinematics that has been demonstrated scientifically has only been marginal. The aim of this study was to examine the effect of different heights in medial arch-supported foot orthoses on rear foot motion during gait. Methods Nineteen asymptomatic runners (36±11years, 180±5cm, 79±10kg; 41±22km/week) participated in the study. Trials were recorded at 3.1 mph (5 km/h) on a treadmill. Athletes walked barefoot and with 4 different not customized medial arch-supported foot orthoses of various arch heights (N:0 mm, M:30 mm, H:35 mm, E:40mm). Six infrared cameras and the `Oxford Foot Model´ were used to capture motion. The average stride in each condition was calculated from 50 gait cycles per condition. Eversion excursion and internal tibia rotation were analyzed. Descriptive statistics included calculating the mean ± SD and 95% CIs. Group differences by condition were analyzed by one factor (foot orthoses) repeated measures ANOVA (α = 0.05). Results Eversion excursion revealed the lowest values for N and highest for H (B:4.6°±2.2°; 95% CI [3.1;6.2]/N:4.0°±1.7°; [2.9;5.2]/M:5.2°±2.6°; [3.6;6.8]/H:6.2°±3.3°; [4.0;8.5]/E:5.1°±3.5°; [2.8;7.5]) (p>0.05). Range of internal tibia rotation was lowest with orthosis H and highest with E (B:13.3°±3.2°; 95% CI [11.0;15.6]/N:14.5°±7.2°; [9.2;19.6]/M:13.8°±5.0°; [10.8;16.8]/H:12.3°±4.3°; [9.0;15.6]/E:14.9°±5.0°; [11.5;18.3]) (p>0.05). Differences between conditions were small and the intrasubject variation high. Conclusion Our results indicate that different arch support heights have no systematic effect on eversion excursion or the range of internal tibia rotation and therefore might not exert a crucial influence on rear foot alignment during gait.

Item Type:

Journal Article (Original Article)

Division/Institute:

Department of Health Professions
Department of Health Professions > Abteilung Physiotherapie

Name:

Wahmkow, Gunnar; Cassel, Michael; Mayer, Frank and Baur, Heiner

ISSN:

1932-6203

Publisher:

PLOS

Language:

English

Submitter:

Admin import user

Date Deposited:

03 Sep 2019 12:13

Last Modified:

03 Sep 2019 12:13

Publisher DOI:

10.1371/journal.pone.0172334

ARBOR DOI:

10.24451/arbor.5651

URI:

https://arbor.bfh.ch/id/eprint/5651

Actions (login required)

View Item View Item
Provide Feedback