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The effects of rearfoot position on lower limb kinematics during bilateral squatting in asymptomatic individuals with a pronated foot type

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dc.contributor.author Power, Valerie
dc.contributor.author Clifford, Amanda M.
dc.date.accessioned 2015-11-05T10:27:29Z
dc.date.available 2015-11-05T10:27:29Z
dc.date.issued 2012
dc.identifier.citation Power, V. and Clifford, A. M. (2012) 'The Effects of Rearfoot Position on Lower Limb Kinematics during Bilateral Squatting in Asymptomatic Individuals with a Pronated Foot Type', Journal of Human Kinetics, 31, 5-15. en_US
dc.identifier.uri http://hdl.handle.net/10344/4708
dc.description peer-reviewed en_US
dc.description.abstract Clinicians frequently assess movement performance during a bilateral squat to observe the biomechanical effects of foot orthotic prescription. However, the effects of rearfoot position on bilateral squat kinematics have not been established objectively to date. This study aims to investigate these effects in a population of healthy adults with a pronated foot type. Ten healthy participants with a pronated foot type bilaterally (defined as a navicular drop >9mm) performed three squats in each of three conditions: barefoot, standing on 10mm shoe pitch platforms and standing on the platforms with foam wedges supporting the rearfoot in subtalar neutral. Kinematic data was recorded using a 3D motion analysis system. Between-conditions changes in peak joint angles attained were analysed. Peak ankle dorsiflexion (p=0.0005) and hip abduction (p=0.024) were significantly reduced, while peak knee varus (p=0.028) and flexion (p=0.0005) were significantly increased during squatting in the subtalar neutral position compared to barefoot. Peak subtalar pronation decreased by 5.33 degrees (SD 4.52 degrees ) when squatting on the platforms compared to barefoot (p=0.006), but no additional significant effects were noted in subtalar neutral. Significant changes in lower limb kinematics may be observed during bilateral squatting when rearfoot alignment is altered. Shoe pitch alone may significantly reduce peak pronation during squatting in this population, but additional reductions were not observed in the subtalar neutral position. Further research investigating the effects of footwear and the subtalar neutral position in populations with lower limb pathology is required. en_US
dc.language.iso eng en_US
dc.publisher De Gruyter Open en_US
dc.relation.ispartofseries Journal of Human Kinetics;31, pp. 5-15
dc.relation.uri http://www.degruyter.com/page/829
dc.subject kinematics en_US
dc.subject lower limb en_US
dc.subject orthotics en_US
dc.subject pronation en_US
dc.subject squat en_US
dc.title The effects of rearfoot position on lower limb kinematics during bilateral squatting in asymptomatic individuals with a pronated foot type en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US


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