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dc.contributor.authorMoore, Isabel
dc.contributor.authorJones, Andrew
dc.contributor.authorDixon, Sharon
dc.date.accessioned2016-03-21T15:36:07Z
dc.date.available2016-03-21T15:36:07Z
dc.date.issued2015
dc.identifier.citationMoore, I.S., Jones, A.M. and Dixon, S.J. (2015) 'Reduced oxygen cost of running is related to alignment of the resultant GRF and leg axis vector: a pilot study', Scandinavian Journal of Medicine & Science in Sports.en_US
dc.identifier.issn0905-7188
dc.identifier.urihttp://hdl.handle.net/10369/7795
dc.descriptionThis article was published in Scandinavian Journal of Medicine and Science in Sports on 06 July 2015 (online), available at http://dx.doi.org/10.1111/sms.12514 The author's post-print was made available from 06 July 2016en_US
dc.description.abstractPurpose: This pilot study investigated whether a ten-week running programme (10wkRP), which reduced the oxygen cost of running, affected resultant ground reaction force (GRF), leg axis alignment, joint moment characteristics and gear ratios. Methods: Ten novice, female runners completed a 10wkRP. Running kinematics and kinetics, in addition to oxygen consumption (VO2) " during steady-state running, were recorded pre- and post-10wkRP. Results: VO2 decreased (8%) from pre-10wkRP to post-10wkRP. There was a better alignment of the resultant GRF and leg axis at peak propulsion post-10wkRP compared to pre-10wkRP (10.8 ± 4.9 vs. 1.6 ± 1.2°), as the resultant GRF vector was applied 7 ± 0.6° (p=0.008) more horizontally. There were shorter external ankle moment arms (24%) and smaller knee extensor moments (23%) at peak braking post-10wkRP. The change in VO2 was associated with the change in alignment of the resultant GRF and leg axis (rs = 0.88, p=0.003). Conclusion: As runners became more economical they exhibited a more aligned resultant GRF vector and leg axis at peak propulsion. This appears to be a self-optimisation strategy that may improve performance. Additionally, changes to external ankle moment arms indicated beneficial low gear ratios were achieved at the time of peak braking force.en_US
dc.language.isoenen_US
dc.publisherJohn Wiley & Sonsen_US
dc.relation.ispartofseriesScandinavian Journal of Medicine and Science in Sports
dc.subjectrunning economyen_US
dc.subjectjoint momentsen_US
dc.subjectgear ratioen_US
dc.subjectrunning gaiten_US
dc.titleReduced oxygen cost of running is related to alignment of the resultant GRF and leg axis vector: A pilot studyen_US
dc.typeArticleen_US
dc.identifier.doihttp://dx.doi.org/10.1111/sms.12514
dc.date.dateAccepted2015-05-26


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