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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.accessioned2020-05-26T04:04:43Z
dc.date.available2020-05-26T04:04:43Z
dc.date.issued2020
dc.identifier.issn0905-7188
dc.identifier.doi10.1111/sms.13669
dc.identifier.urihttp://hdl.handle.net/10072/394168
dc.description.abstractScandinavian Journal of Medicine & Science In Sports published by John Wiley & Sons Ltd We 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 years; 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 years; 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 age-matched civilians (age = 21.6 ± 0.7 years; 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 <.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 <.05-.01) and marching (27.5% and 34.3%, P <.05-.01) than civilians. Furthermore, cadets showed lower normalized soleus electrical activity during walking (22.7%, P <.05) and marching (27.0%, P <.05). Therefore, 24-36 months of continuous overloading, primarily occurring under aerobic conditions, leads to more efficient neural and mechanical behavior in the triceps surae complex, without any major macroscopic alterations in key anatomical structures.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherWILEY
dc.relation.ispartofjournalScandinavian Journal of Medicine & Science in Sports
dc.subject.fieldofresearchSports science and exercise
dc.subject.fieldofresearchMedical physiology
dc.subject.fieldofresearchcode4207
dc.subject.fieldofresearchcode3208
dc.subject.keywordsScience & Technology
dc.subject.keywordsLife Sciences & Biomedicine
dc.subject.keywordsSport Sciences
dc.subject.keywordsfascicle mechanics
dc.subject.keywordsmarching
dc.titleMuscle-tendon morphology and function following long-term exposure to repeated and strenuous mechanical loading
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationBissas, A; Havenetidis, K; Walker, J; Hanley, B; Nicholson, G; Metaxas, T; Christoulas, K; Cronin, NJ, Muscle-tendon morphology and function following long-term exposure to repeated and strenuous mechanical loading, Scandinavian Journal of Medicine & Science in Sports, 2020
dcterms.dateAccepted2020-03-13
dcterms.licensehttps://creativecommons.org/licenses/by/4.0/
dc.date.updated2020-05-26T02:56:31Z
dc.description.versionVersion of Record (VoR)
gro.rights.copyright© 2020 The Authors. Scandinavian Journal of Medicine & Science In Sports published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
gro.hasfulltextFull Text
gro.griffith.authorCronin, Neil


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