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dc.contributor.authorStrutzenberger, G.
dc.contributor.authorBrazil, Adam
dc.contributor.authorExell, Timothy
dc.contributor.authorvon Lieres und Wilkau, Hans
dc.contributor.authorDavies, John
dc.contributor.authorWillwacher, S.
dc.contributor.authorFunken, J.
dc.contributor.authorMueller, R.
dc.contributor.authorHeinrich, K.
dc.contributor.authorSchwameder, H.
dc.contributor.authorPotthast, W.
dc.contributor.authorIrwin, Gareth
dc.date.accessioned2018-03-22T08:26:08Z
dc.date.available2018-03-22T08:26:08Z
dc.date.issued2017-12-18
dc.identifier.citationStrutzenberger, G., Brazil, A., Exell, T., von Lieres und Wilkau, H., Davies, J., Willwacher, S., Funken, J., Mueller, R., Heinrich, K., Schwameder, H., Potthast, W., Irwin, G. (2017) 'First and Second Step characteristics of Amputee and Able-Bodied Sprinters', International Journal of Sports Physiology and Performance, pp.1-22.
dc.identifier.issn1555-0265
dc.identifier.issn1555-0273 (online)
dc.identifier.urihttp://hdl.handle.net/10369/9482
dc.descriptionArticle published in International Journal of Sports Physiology and Performance available at https://doi.org/10.1123/ijspp.2017-0231
dc.description.abstractPurpose: In the sprint events, the first two steps are used to accelerate the center of mass horizontally and vertically. Amputee athletes cannot actively generate energy with their running specific prosthesis. It is likely that sprint acceleration mechanics, including step asymmetry, are altered compared to able-bodied athletes. Therefore, the aim of this study was to investigate spatio-temporal and kinetic variables of amputee compared to able-bodied sprinters. Methods: Kinematic and kinetic data of the first and second stance were collected from 15 able-bodied and 7 amputee sprinters (2 unilateral-transfemoral, 4 unilateral-transtibial, 1 bilateral-transtibial) with a motion-capture system (250 Hz) and two force plates (1000 Hz), additionally bilateral asymmetry was quantified and compared between groups. Results: Compared to able-bodied athletes, amputee athletes demonstrated significantly lower performance values for 5 m and 10 m times. Step length, step velocity, step frequency were decreased and contact times increased. Peak horizontal force and relative change of horizontal velocity were decreased in both stances. Peak vertical force and relative change of vertical velocity were lower for the amputee than able-bodied group during first stance, but significantly higher during second stance. During the first stance able-bodied and amputee sprinters displayed a similar orientation of the ground reaction force vector, which became more vertically orientated in the amputee group during second stance. Amputee sprinters showed significantly greater asymmetry magnitudes for vertical force kinetics compared to able-bodied athletes. Conclusion: The running specific prosthesis does not replicate the function of the biological limb well in the early acceleration phase.en_US
dc.language.isoenen_US
dc.publisherHuman Kineticsen_US
dc.relation.ispartofseriesInternational Journal of Sports Physiology and Performance;
dc.subjectrunning specific prosthesis
dc.subjecttransfemoral amputee
dc.subjecttranstibial amputee
dc.subjectathletics
dc.subjectground reaction force
dc.titleFirst and Second Step characteristics of Amputee and Able-Bodied Sprintersen_US
dc.typeArticleen_US
dc.identifier.doihttps://doi.org/10.1123/ijspp.2017-0231
dcterms.dateAccepted2017-12-01
rioxxterms.versionAMen_US
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden_US
rioxxterms.licenseref.startdate2018-03-22


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