Calf muscle activity alteration with foot orthoses

NewsBot · Dec 30, 2016

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Calf muscle activity alteration with foot orthoses
insertion during walking measured by fine-wire
electromyography
Hiroshi Akuzawa, et al
J. Phys. Ther. Sci. 28: 3458–3462, 2016

[Purpose] The purpose of the study was to assess the muscle activity change of the tibialis posterior,
flexor digitorum longus, and peroneus longus during gait with orthoses.
[Subjects and Methods] Sixteen healthy
males participated in this study. Activity of each muscle was measured by using fine-wire and surface electromyography.
Gait task was performed by the participants barefoot, with footwear and with orthoses. The electromyography
data from a stance phase of each gait trial were used for analysis. The stance phase was divided into
contact, midstance, and propulsion phases. The data from ten participants were extracted for final analysis, as electromyography
measurements were unsuccessful for the other six.
[Results] The results demonstrated that orthoses
significantly reduced the tibialis posterior muscle activity in the propulsion phase compared to that in the barefoot
condition. Although there was a significant difference in the midstance phase, post hoc analysis did not indicate
significant differences among the phases. No significant electromyography amplitude change was detected in flexor
digitorum longus and peroneus longus.
[Conclusion] Orthothes reduced the tibialis posterior activity level during
gait. This result may be beneficial for patients with injuries related to excessive activity of tibialis posterior.
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Admin2 · Dec 30, 2016

Related Topics:
Effect of foot orthotics on EMG of lower leg muscles
Foot orthoses and EMG activity
Effects of soft orthotics on sEMG activity of superficial leg muscles during walking with supinated feet.
Effects of two types of foot orthoses on lower limb muscle activity before and after a one-month period of wear

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