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dc.contributor.authorClemente, C
dc.contributor.authorBishop, Peter James
dc.contributor.authorNewman, N
dc.contributor.authorHocknull, Scott
dc.date.accessioned2019-05-30T22:38:29Z
dc.date.available2019-05-30T22:38:29Z
dc.date.issued2018
dc.identifier.issn0952-8369en_US
dc.identifier.doi10.1111/jzo.12521en_US
dc.identifier.urihttp://hdl.handle.net/10072/384883
dc.description.abstractBipedalism has repeatedly evolved in many independent lineages throughout tetrapod history. Despite being widespread, the fundamental biomechanical factors involved in bipedalism remain unclear. This study experimentally investigated bipedalism in facultatively bipedal lizards and obligatorily bipedal birds to explore temporal asymmetry in the vertical component of the ground reaction force (Fz). Both lizards and birds showed significant temporal asymmetry – with higher vertical forces exerted earlier in the stance – as indicated by three different measures computed from force‐time profiles. This result parallels those reported previously for other bipedal animal groups that have a forward situated whole‐body centre of mass (COM), such as kangaroos and non‐human primates. Humans, in contrast, exhibit an orthograde posture with the COM close the hips, and show little temporal asymmetry in Fz, particularly during walking. Across a wide range of quadrupedal animals, temporal asymmetry is quite variable. Collectively, these results suggest that an ‘early‐skewed’ Fz may be an important feature of steady bipedal locomotion when the COM is forward of the hips, although an exact mechanism of cause‐and‐effect, if one exists, remains to be established. This finding has relevance for attempts at better understanding bipedal locomotion in extinct animals that likely had a COM located forward of the hips, such as carnivorous dinosaurs.en_US
dc.description.peerreviewedYesen_US
dc.languageEnglishen_US
dc.publisherWiley-Blackwellen_US
dc.publisher.placeUnited Kingdomen_US
dc.relation.ispartofpagefrom193en_US
dc.relation.ispartofpageto201en_US
dc.relation.ispartofissue3en_US
dc.relation.ispartofjournalJournal of Zoologyen_US
dc.relation.ispartofvolume304en_US
dc.subject.fieldofresearchZoology not elsewhere classifieden_US
dc.subject.fieldofresearchBiological Sciencesen_US
dc.subject.fieldofresearchEnvironmental Sciencesen_US
dc.subject.fieldofresearchcode060899en_US
dc.subject.fieldofresearchcode06en_US
dc.subject.fieldofresearchcode05en_US
dc.titleSteady bipedal locomotion with a forward situated whole-body centre of mass: The potential importance of temporally asymmetric ground reaction forcesen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Articlesen_US
dc.type.codeC - Journal Articlesen_US
dc.description.versionPre-printen_US
gro.rights.copyright© 2018 The Zoological Society of London. This is the pre-peer reviewed version of the following article: Steady bipedal locomotion with a forward situated whole-body centre of mass: The potential importance of temporally asymmetric ground reaction forces, Journal of Zoology, Volume 304, Issue 3, March 2018, Pages 193-201, which has been published in final form at 10.1111/jzo.12521. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving (http://olabout.wiley.com/WileyCDA/Section/id-828039.html)en_US
gro.hasfulltextFull Text
gro.griffith.authorBishop, Peter James J.
gro.griffith.authorHocknull, Scott


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