@article{ref1,
title="Shoe-mounted accelerometers should be used with caution in gait retraining",
journal="Scandinavian journal of medicine and science in sports",
year="2019",
author="Cheung, Roy T. H. and Zhang, Janet H. and Chan, Zoe Y. S. and An, Winko W. and Au, Ivan P. H. and MacPhail, Aislinn and Davis, Irene S.",
volume="29",
number="6",
pages="835-842",
abstract="Real time biofeedback gait retraining has been reported to be an effective intervention to lower the impact loading during gait. While many of the previous gait retraining studies have utilized a laboratory-based setup, some studies used accelerometers affixed at the distal tibia to allow training outside the laboratory environment. However, many commercial sensors for gait modification are shoe-mounted. Hence, this study sought to compare impact loading parameters measured by shoe-mounted and tibia sensors in participants before and after a course of walking or running retraining using signal source from the shoe-mounted sensors. We also compared the correlations between peak positive acceleration measured at shoe (PPA<sub>S</sub> ) and tibia (PPA<sub>T</sub> ) and vertical loading rates, as these loading rates have been related to injury. Twenty four and 14 participants underwent a two-week visual biofeedback walking and running retraining respectively. Participants in the walking retraining group experienced lower PPA<sub>S</sub> following the intervention (p<0.005). However, they demonstrated no change in PPA<sub>T</sub> (p=0.409) nor vertical loading rates (p>0.098) following the walking retraining. In contrast, participants in the running retraining group experienced a reduction in the PPA<sub>T</sub> (p=0.001) and vertical loading rates (p<0.013) after running retraining. PPA<sub>S</sub> values were 4 times that of PPA<sub>T</sub> for both walking and running suggesting an uncoupling of the shoe with tibia. As such, PPA<sub>S</sub> was not correlated with vertical loading rates for either walking or running, while significant correlations between PPA<sub>T</sub> and vertical loading rates were noted. The present study suggests potential limitations of the existing commercial shoe-mounted sensors. This article is protected by copyright. All rights reserved.<br><br>This article is protected by copyright. All rights reserved.<p /> <p>Language: en</p>",
language="en",
issn="0905-7188",
doi="10.1111/sms.13396",
url="http://dx.doi.org/10.1111/sms.13396"
}