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dc.contributor.authorBissas, Athanassios
dc.contributor.authorHavenetidis, Konstantinos
dc.contributor.authorWalker, Josh
dc.contributor.authorHanley, Brian
dc.contributor.authorNicholson, Gareth
dc.contributor.authorMetaxas, Thomas
dc.contributor.authorChristoulas, Kosmas
dc.contributor.authorCronin, Neil J.
dc.date.accessioned2020-04-06T07:33:39Z
dc.date.available2020-04-06T07:33:39Z
dc.date.issued2020
dc.identifier.citationBissas, A., Havenetidis, K., Walker, J., Hanley, B., Nicholson, G., Metaxas, T., Christoulas, K., & Cronin, N. J. (2020). Muscle‐tendon morphology and function following long‐term exposure to repeated and strenuous mechanical loading. <i>Scandinavian Journal of Medicine and Science in Sports</i>, <i>30</i>(7), 1151-1162. <a href="https://doi.org/10.1111/sms.13669" target="_blank">https://doi.org/10.1111/sms.13669</a>
dc.identifier.otherCONVID_35175959
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/68462
dc.description.abstractWe mapped structural and functional characteristics of muscle‐tendon units in a population exposed to very long‐term routine overloading. Twenty‐eight military academy cadets (age: 21.00 ± 1.1 yrs; height: 176.1 ± 4.8 cm; mass: 73.8 ± 7.0 kg) exposed for over 24 months to repetitive overloading were profiled via ultrasonography with a senior subgroup of them (n = 11; age = 21.4 ± 1.0 yrs; height = 176.5 ± 4.8 cm; mass = 71.4 ± 6.6 kg) also tested while walking and marching on a treadmill. A group of eleven ethnicity‐ and aged‐matched civilians (age = 21.6 ± 0.7 yrs; height = 176.8 ± 4.3 cm; mass = 74.6 ± 5.6 kg) was also profiled and tested. Cadets and civilians exhibited similar morphology (muscle and tendon thickness and cross‐sectional area, pennation angle, fascicle length) in 26 out of 29 sites including the Achilles tendon. However, patellar tendon thickness along the entire tendon was greater (p<0.05) by a mean of 16% for the senior cadets compared with civilians. Dynamically, cadets showed significantly smaller ranges of fascicle length change and lower shortening velocity in medial gastrocnemius during walking (44.0% and 47.6%, p<0.05 ‐ 0.01) and marching (27.5% and 34.3%, p<0.05 ‐ 0.01) than civilians. Furthermore, cadets showed lower normalised soleus electrical activity during walking (22.7%, p<0.05) and marching (27.0%, p<0.05). Therefore, 24‐36 months of continuous overloading, primarily occurring under aerobic conditions, leads to more efficient neural and mechanical behaviour in the triceps surae complex, without any major macroscopic alterations in key anatomical structures.en
dc.format.mimetypeapplication/pdf
dc.languageeng
dc.language.isoeng
dc.publisherWiley-Blackwell
dc.relation.ispartofseriesScandinavian Journal of Medicine and Science in Sports
dc.rightsIn Copyright
dc.subject.otherfascicle mechanics
dc.subject.othermarching
dc.subject.othermedial gastrocnemius
dc.subject.otheroverloading
dc.subject.otherpatellar tendon
dc.subject.othertriceps surae
dc.subject.otherultrasound
dc.titleMuscle‐tendon morphology and function following long‐term exposure to repeated and strenuous mechanical loading
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-202004062673
dc.contributor.laitosLiikuntatieteellinen tiedekuntafi
dc.contributor.laitosFaculty of Sport and Health Sciencesen
dc.contributor.oppiaineBiomekaniikkafi
dc.contributor.oppiaineBiomechanicsen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.description.reviewstatuspeerReviewed
dc.format.pagerange1151-1162
dc.relation.issn0905-7188
dc.relation.numberinseries7
dc.relation.volume30
dc.type.versionacceptedVersion
dc.rights.copyright© 2020 Wiley-Blackwell
dc.rights.accesslevelopenAccessfi
dc.subject.ysojänteet
dc.subject.ysofaskiat
dc.subject.ysorasitus
dc.subject.ysolihakset
dc.subject.ysobiomekaniikka
dc.subject.ysoylikuormitus
dc.subject.ysohermo-lihastoiminta
dc.format.contentfulltext
jyx.subject.urihttp://www.yso.fi/onto/yso/p11499
jyx.subject.urihttp://www.yso.fi/onto/yso/p29670
jyx.subject.urihttp://www.yso.fi/onto/yso/p23890
jyx.subject.urihttp://www.yso.fi/onto/yso/p2784
jyx.subject.urihttp://www.yso.fi/onto/yso/p20292
jyx.subject.urihttp://www.yso.fi/onto/yso/p25615
jyx.subject.urihttp://www.yso.fi/onto/yso/p25107
dc.rights.urlhttp://rightsstatements.org/page/InC/1.0/?language=en
dc.relation.doi10.1111/sms.13669
jyx.fundinginformationThe study was supported by research development and infrastructure grants from Carnegie Faculty—Leeds Beckett University, while training and skills exchange were supported by an Erasmus + Staff Mobility agreement between Leeds Beckett University and University of Jyväskylä.


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