Gymnastik- och idrottshögskolan, GIH

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Effect of footwear on intramuscular EMG activity of plantar flexor muscles in walking.
University of Jyväskylä, Finland.
Swedish School of Sport and Health Sciences, GIH, Department of Physiology, Nutrition and Biomechanics. (Laboratoriet för biomekanik och motorisk kontroll (BMC))ORCID iD: 0000-0002-1210-6449
University of Jyväskylä, Finland.
University of Jyväskylä, Finland.
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2020 (English)In: Journal of Electromyography & Kinesiology, ISSN 1050-6411, E-ISSN 1873-5711, Vol. 55, article id 102474Article in journal (Refereed) Published
Abstract [en]

One of the purposes of footwear is to assist locomotion, but some footwear types seem to restrict natural foot motion, which may affect the contribution of ankle plantar flexor muscles to propulsion. This study examined the effects of different footwear conditions on the activity of ankle plantar flexors during walking. Ten healthy habitually shod individuals walked overground in shoes, barefoot and in flip-flops while fine-wire electromyography (EMG) activity was recorded from flexor hallucis longus (FHL), soleus (SOL), and medial and lateral gastrocnemius (MG and LG) muscles. EMG signals were peak-normalised and analysed in the stance phase using Statistical Parametric Mapping (SPM). We found highly individual EMG patterns. Although walking with shoes required higher muscle activity for propulsion than walking barefoot or with flip-flops in most participants, this did not result in statistically significant differences in EMG amplitude between footwear conditions in any muscle (p > 0.05). Time to peak activity showed the lowest coefficient of variation in shod walking (3.5, 7.0, 8.0 and 3.4 for FHL, SOL, MG and LG, respectively). Future studies should clarify the sources and consequences of individual EMG responses to different footwear.

Place, publisher, year, edition, pages
Elsevier, 2020. Vol. 55, article id 102474
Keywords [en]
Fine-wire electromyography, Foot, Gait, Locomotion, Lower leg
National Category
Sport and Fitness Sciences
Research subject
Medicine/Technology
Identifiers
URN: urn:nbn:se:gih:diva-6319DOI: 10.1016/j.jelekin.2020.102474ISI: 000593742800017PubMedID: 32979677OAI: oai:DiVA.org:gih-6319DiVA, id: diva2:1473152
Available from: 2020-10-05 Created: 2020-10-05 Last updated: 2021-09-18Bibliographically approved

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Arndt, AntonAndersson, EvaTarassova, OlgaRönquist, Gustaf

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