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dc.contributor.authorCenni, Francesco
dc.contributor.authorSchless, Simon-Henri
dc.contributor.authorAdams, Heleen
dc.contributor.authorBar-On, Lynn
dc.contributor.authorDesloovere, Kaat
dc.date.accessioned2021-11-25T12:26:55Z
dc.date.available2021-11-25T12:26:55Z
dc.date.issued2021
dc.identifier.citationCenni, F., Schless, S.-H., Adams, H., Bar-On, L., & Desloovere, K. (2021). The reliability of measuring medial gastrocnemius muscle-tendon unit lengths during gait. <i>Gait and Posture</i>, <i>90</i>, 464-467. <a href="https://doi.org/10.1016/j.gaitpost.2021.09.198" target="_blank">https://doi.org/10.1016/j.gaitpost.2021.09.198</a>
dc.identifier.otherCONVID_101618153
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/78794
dc.description.abstractBackground Ultrasound imaging combined with 3D motion analysis allows for in-vivo assessment of muscle-tendon unit lengths during gait. The clinical relevance of analysing the medial gastrocnemius (MG) and Achilles muscle-tendon junction (MTJ), MG mid-muscle belly fascicles (FAS) and muscle thickness was shown. However, their reliability error estimations over the gait cycle is unknown. Research question What are the intra- and inter-session errors associated with extracting MG belly, thickness, FAS and tendon lengths using ultrasound during gait in healthy participants? Methods 3D gait analysis was carried out in ten healthy adults as they walked on an instrumented treadmill at a comfortable walking speed. An ultrasound probe was secured on the leg and tracked by 3D motion analysis. Images were collected during two walking trials with the probe on the MG muscle-belly to estimate FAS lengths and muscle thickness, and during two trials with the probe on the MTJ to estimate muscle-belly and tendon lengths. A second session was performed after 5 ± 4 days where a different operator placed the ultrasound probe. The standard deviation (SD) of absolute and relative lengths changes during the gait cycle over different trials were calculated per participant. SD values averaged over participants represented intra- and inter-session errors. Results For all assessed variables, the intra-session errors were <2.2 mm, except for the FAS lengths (3.1 mm). The inter-session errors were larger than the intra-session, with the highest values found for the absolute muscle-tendon unit lengths (5.6 mm). Relative length errors were smaller than absolute length errors. Significance Intra-session errors, which may reflect natural variability and data processing errors, seem more critical when extracting absolute FAS than muscle-tendon lengths. Standardized probe positioning on the MTJ between sessions may improve the inter-session reliability. Expressing the lengths relative to their lengths as the beginning of the gait cycle reduces the inter-session errors.en
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherElsevier BV
dc.relation.ispartofseriesGait and Posture
dc.rightsCC BY 4.0
dc.subject.otherreliability
dc.subject.otherlower limb muscle-tendon
dc.subject.otherdynamic ultrasound
dc.subject.othergait analysis
dc.titleThe reliability of measuring medial gastrocnemius muscle-tendon unit lengths during gait
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-202111255801
dc.contributor.laitosLiikuntatieteellinen tiedekuntafi
dc.contributor.laitosFaculty of Sport and Health Sciencesen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.description.reviewstatuspeerReviewed
dc.format.pagerange464-467
dc.relation.issn0966-6362
dc.relation.volume90
dc.type.versionpublishedVersion
dc.rights.copyright© 2021 The Authors. Published by Elsevier B.V.
dc.rights.accesslevelopenAccessfi
dc.subject.ysokävely
dc.subject.ysojänteet
dc.subject.ysolihakset
dc.subject.ysoreliabiliteetti
dc.subject.ysoultraäänitutkimus
dc.subject.ysomittausmenetelmät
dc.subject.ysoaskeleet
dc.subject.ysobiomekaniikka
dc.subject.ysoliikeanalyysi
dc.subject.ysojalat
dc.format.contentfulltext
jyx.subject.urihttp://www.yso.fi/onto/yso/p3706
jyx.subject.urihttp://www.yso.fi/onto/yso/p11499
jyx.subject.urihttp://www.yso.fi/onto/yso/p2784
jyx.subject.urihttp://www.yso.fi/onto/yso/p9970
jyx.subject.urihttp://www.yso.fi/onto/yso/p19405
jyx.subject.urihttp://www.yso.fi/onto/yso/p20083
jyx.subject.urihttp://www.yso.fi/onto/yso/p28779
jyx.subject.urihttp://www.yso.fi/onto/yso/p20292
jyx.subject.urihttp://www.yso.fi/onto/yso/p24952
jyx.subject.urihttp://www.yso.fi/onto/yso/p13757
dc.rights.urlhttps://creativecommons.org/licenses/by/4.0/
dc.relation.doi10.1016/j.gaitpost.2021.09.198
jyx.fundinginformationWe would like to acknowledge the Promobilia Foundation, the Research Foundation Flanders and the Netherlands Organization for Scientific Research for funding. The sponsors had no role in the design and conduct of this study; collection analysis, and interpretation of data; preparation, review or approval of the manuscript; and decision to submit the manuscript for publication.


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