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dc.contributor.authorC. Heiderscheit, Bryanen_US
dc.contributor.authorS. Chumanov, Elizabethen_US
dc.contributor.authorP. Michalski, Maxen_US
dc.contributor.authorM. Willie, Christaen_US
dc.contributor.authorB. Ryan, Michealen_US
dc.date.accessioned2017-04-24T13:45:18Z
dc.date.available2017-04-24T13:45:18Z
dc.date.issued2011en_US
dc.date.modified2012-02-16T05:41:59Z
dc.identifier.issn01959131en_US
dc.identifier.doi10.1249/MSS.0b013e3181ebedf4en_US
dc.identifier.urihttp://hdl.handle.net/10072/42832
dc.description.abstractPurpose: The objective of this study was to characterize the biomechanical effects of step rate modification during running on the hip, knee, and ankle joints so as to evaluate a potential strategy to reduce lower extremity loading and risk for injury. Methods: Three-dimensional kinematics and kinetics were recorded from 45 healthy recreational runners during treadmill running at constant speed under various step rate conditions (preferred, ᵥ, and ᱰ%). We tested our primary hypothesis that a reduction in energy absorption by the lower extremity joints during the loading response would occur, primarily at the knee, when step rate was increased. Results: Less mechanical energy was absorbed at the knee (P < 0.01) during the +5% and +10% step rate conditions, whereas the hip (P < 0.01) absorbed less energy during the +10% condition only. All joints displayed substantially (P < 0.01) more energy absorption when preferred step rate was reduced by 10%. Step length (P < 0.01), center of mass vertical excursion (P < 0.01), braking impulse (P < 0.01), and peak knee flexion angle (P < 0.01) were observed to decrease with increasing step rate. When step rate was increased 10% above preferred, peak hip adduction angle (P < 0.01) and peak hip adduction (P < 0.01) and internal rotation (P < 0.01) moments were found to decrease. Conclusion: We conclude that subtle increases in step rate can substantially reduce the loading to the hip and knee joints during running and may prove beneficial in the prevention and treatment of common running-related injuries.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_US
dc.languageEnglishen_US
dc.publisherLippincott Williams and Wilkinsen_US
dc.publisher.placeUnited Statesen_US
dc.relation.ispartofstudentpublicationNen_US
dc.relation.ispartofpagefrom296en_US
dc.relation.ispartofpageto302en_US
dc.relation.ispartofissue2en_US
dc.relation.ispartofjournalMedicine and Science in Sports and Exerciseen_US
dc.relation.ispartofvolume43en_US
dc.rights.retentionYen_US
dc.subject.fieldofresearchEpidemiologyen_US
dc.subject.fieldofresearchPhysiotherapyen_US
dc.subject.fieldofresearchBiomechanicsen_US
dc.subject.fieldofresearchcode111706en_US
dc.subject.fieldofresearchcode110317en_US
dc.subject.fieldofresearchcode110601en_US
dc.titleEffects of Step Rate Manipulation on Joint Mechanics during Runningen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.date.issued2011
gro.hasfulltextNo Full Text


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