Show simple item record

dc.contributor.authorHegyi, Andras
dc.contributor.authorGoncalves, Basilio
dc.contributor.authorFinni Juutinen, Taija
dc.contributor.authorCronin, Neil
dc.date.accessioned2019-10-18T09:47:52Z
dc.date.available2020-12-01T22:35:11Z
dc.date.issued2019
dc.identifier.citationHegyi, A., Goncalves, B., Finni Juutinen, T., & Cronin, N. (2019). Individual Region- and Muscle-specific Hamstring Activity at Different Running Speeds. <i>Medicine and Science in Sports and Exercise</i>, <i>51</i>(11), 2274-2285. <a href="https://doi.org/10.1249/MSS.0000000000002060" target="_blank">https://doi.org/10.1249/MSS.0000000000002060</a>
dc.identifier.otherCONVID_31217774
dc.identifier.otherTUTKAID_81679
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/65953
dc.description.abstractIntroduction: Hamstring strain injuries typically occur in the proximal biceps femoris long head (BFlh) at high running speeds. Strain magnitude seems to be the primary determinant of strain injury, and may be regulated by muscle activation. In running, BFlh strain is largest in the proximal region, especially at high speeds. However, region-specific activity has not been examined. This study examined the proximal–distal and intermuscular activity of BFlh and semitendinosus (ST) as a function of increasing running speed. Methods: Thirteen participants ran at steady speeds of 4.1 (slow), 5.4 (moderate), and 6.8 m·s−1 (fast) on a treadmill. Region- and muscle-specific EMG activity were recorded at each speed using high-density EMG, and were normalized to maximal voluntary isometric activity. Muscle–tendon unit lengths were calculated from kinematic recordings. Speed effects, regional, and intermuscular differences were tested with Statistical Parametric Mapping. Results: With increasing running speed, EMG activity increased in all regions of both muscles to a similar extent in the clinically relevant late swing phase. Increases in muscle–tendon unit lengths in late swing as a function of running speed were comparatively small. In fast running, EMG activity was highest in late swing in all regions, and reached 115% ± 20% (proximal region, mean ± 95% confidence limit), 106% ± 11% (middle), and 124% ± 16% (distal) relative to maximal voluntary isometric activity in BFlh. Regional and intermuscular EMG patterns were highly individual, but each individual maintained similar proximal–distal and intermuscular EMG activity patterns across running speeds. Conclusions: Running is associated with highly individual hamstring activity patterns, but these patterns are similar across speeds. It may thus be crucial to implement running at submaximal speeds early after hamstring injury for restoration of normal neuromuscular function.fi
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherLippincott Williams & Wilkins
dc.relation.ispartofseriesMedicine and Science in Sports and Exercise
dc.rightsIn Copyright
dc.subject.otherbiceps femoris
dc.subject.othersemitendinosus
dc.subject.othermuscle mechanics
dc.subject.otherinjury mechanism
dc.subject.otherlocomotion
dc.subject.otherproximal-distal differences
dc.subject.otherstrain injuries
dc.titleIndividual Region- and Muscle-specific Hamstring Activity at Different Running Speeds
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201910184515
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.date.updated2019-10-18T06:15:18Z
dc.type.coarhttp://purl.org/coar/resource_type/c_2df8fbb1
dc.description.reviewstatuspeerReviewed
dc.format.pagerange2274-2285
dc.relation.issn0195-9131
dc.relation.numberinseries11
dc.relation.volume51
dc.type.versionacceptedVersion
dc.rights.copyright© 2019 by the American College of Sports Medicine
dc.rights.accesslevelopenAccessfi
dc.subject.ysoelektromyografia
dc.subject.ysobiomekaniikka
dc.subject.ysoliikuntakyky
dc.subject.ysorasitusvammat
dc.subject.ysojuoksu
dc.format.contentfulltext
jyx.subject.urihttp://www.yso.fi/onto/yso/p22356
jyx.subject.urihttp://www.yso.fi/onto/yso/p20292
jyx.subject.urihttp://www.yso.fi/onto/yso/p22622
jyx.subject.urihttp://www.yso.fi/onto/yso/p5844
jyx.subject.urihttp://www.yso.fi/onto/yso/p9087
dc.rights.urlhttp://rightsstatements.org/page/InC/1.0/?language=en
dc.relation.doi10.1249/MSS.0000000000002060
dc.type.okmA1


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record

In Copyright
Except where otherwise noted, this item's license is described as In Copyright