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Torque-angle relati...
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Hedlund, MattiasUmeå universitet,Sjukgymnastik,Umea Univ, Dept Community Med & Rehabil, SE-90187 Umea, Sweden
(författare)
Torque-angle relationship are better preserved during eccentric compared to concentric contractions in patients with stroke
- Artikel/kapitelEngelska2012
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LIBRIS-ID:oai:DiVA.org:miun-17075
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https://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-17075URI
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https://doi.org/10.3233/IES-2012-0455DOI
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https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-55465URI
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Språk:engelska
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Sammanfattning på:engelska
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Submitted version published in dissertation had the title "Better preserved torque-angle relationship during eccentric compared to concentric contractions in patients with stroke".
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The aim of this study was to compare the effect of isokinetic contraction mode and velocity on the torque-angle relationship during maximum voluntary elbow flexion in patients with stroke, age-matched healthy subjects and young subjects. To eliminate the effect of torque amplitude differences between subjects and groups, the torque values throughout the ROM were individually normalized to the peak value for each contraction velocity. The results indicate that in stroke patients the normalized torque angle relationship during the eccentric contractions was better preserved than during concentric contractions. Specifically, during eccentric contractions, stroke patients exhibited a torque-angle relationship that was closer to normal as the test velocity increased. The opposite trend could be seen in concentric contractions where the torque-angle relationship became more divergent from normal with a rise in the velocity. The torque-angle relationships were essentially the same for the control groups, irrespective of contraction mode or velocity. These findings may have significance for loading patterns of resistance training exercises used with stroke patients as such exercises normally are biomechanically designed for normal torque angle relationships. In clinical practice, these findings may partly explain why the strength increases due to resistance training are limited for patients with stroke.
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Sojka, PeterMittuniversitetet,Institutionen för hälsovetenskap (-2013),Department of Health Sciences, Mid-Sweden University, Östersund, Sweden(Swepub:miun)expetsoj
(författare)
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Lundström, RonnieUmeå universitet,Yrkes- och miljömedicin,Umea Univ, Dept Publ Hlth & Clin Med, SE-90187 Umeå, Sweden(Swepub:umu)rolu0006
(författare)
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Lindström, BrittaUmeå universitet,Sjukgymnastik,Umea Univ, Dept Community Med & Rehabil, SE-90187 Umea, Sweden(Swepub:umu)brli0003
(författare)
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Umeå universitetSjukgymnastik
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Isokinetics and exercise science20:2, s. 129-1400959-30201878-5913
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