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  • Hébert-Losier, KimMittuniversitetet,Avdelningen för hälsovetenskap,NVC,Mittuniversitetet, Avdelningen för hälsovetenskap (författare)

Elite and amateur orienteers' running biomechanics on three surfaces at three speeds

  • Artikel/kapitelEngelska2015

Förlag, utgivningsår, omfång ...

  • 2015
  • printrdacarrier

Nummerbeteckningar

  • LIBRIS-ID:oai:DiVA.org:miun-24605
  • https://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-24605URI
  • https://doi.org/10.1249/MSS.0000000000000413DOI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-84475URI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:ref swepub-contenttype
  • Ämneskategori:art swepub-publicationtype

Anmärkningar

  • CODEN: MSCSB
  • PURPOSE: Orienteering athletes must adapt to running on various surfaces, with biomechanics likely contributing to performance. Here, our aims were to identify the effect of athletic status and of surface on the running biomechanics of orienteers. METHODS: Seven elite and seven amateur male orienteers ran 20 m on road, path, and forest surfaces at maximal, 3.8 m·s, and 85% of maximal speeds. A three-dimensional motion capturing system monitored temporal gait and lower extremity kinematic parameters. Data were analyzed using mixed effects models that considered surface (road-path-forest), group (elite-amateur), and surface-group interaction effects. RESULTS: Forest running at maximal speed was slower and involved longer step and cycle times, greater knee extension at foot strike, smaller peak hip flexion and dorsiflexion during stance, and increased ranges of vertical pelvis motion compared with those observed on the road. Elites specifically exhibited greater hip extension at foot strike, larger dorsiflexion at toe-off, and lower pelvis at foot strike and toe-off, whereas amateurs displayed longer stance, greater plantarflexion at foot strike, and greater knee with lesser ankle motion. At the slowest speed, subjects exhibited greater knee flexion at foot strike, greater dorsiflexion at toe-off, shorter strides, smaller peak dorsiflexion during stance, and greater hip, knee, and vertical pelvis motions on forest than on road surfaces. Elites specifically demonstrated shorter stance, step, and cycle times whereas amateurs did not. CONCLUSIONS: Orienteering athletes adjusted their running biomechanics when off-road, with distinct adaptations observed in elite versus amateur competitors. The vertical pelvis motion was consistently greater when running off-road, coherent with reported increases in energy expenditure. However, our athletes did not exhibit more crouched lower limb postures when sprinting in the forest, indicating alternative responses to off-road running to that previously proposed by "Groucho" running.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Mourot, L.Univ Franche Comte, Res Unit Dept EA4660 Dept, Culture Sport Hlth Soc, F-25030 Besancon, France (författare)
  • Holmberg, Hans-ChristerMittuniversitetet,Avdelningen för hälsovetenskap,NVC,Mittuniversitetet, Avdelningen för hälsovetenskap(Swepub:ltu)holhan (författare)
  • MittuniversitetetAvdelningen för hälsovetenskap (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Medicine & Science in Sports & Exercise47:2, s. 381-3890195-91311530-0315

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