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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 03571naa a2200397 4500 | |
| 001 | oai:DiVA.org:liu-134978 | |
| 003 | SwePub | |
| 008 | 170306s2017 | |||||||||||000 ||eng| | |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-1349782 URI |
| 024 | 7 | a https://doi.org/10.1038/srep420112 DOI |
| 040 | a (SwePub)liu | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a ref2 swepub-contenttype |
| 072 | 7 | a art2 swepub-publicationtype |
| 100 | 1 | a Dieterich, Angela V.u University of Medical Centre, Germany4 aut |
| 245 | 1 0 | a Spatial variation and inconsistency between estimates of onset of muscle activation from EMG and ultrasound |
| 264 | c 2017-02-08 | |
| 264 | 1 | b NATURE PUBLISHING GROUP,c 2017 |
| 338 | a electronic2 rdacarrier | |
| 500 | a Funding Agencies|German Research Foundation; Georg-August Universitat Gottingen, Germany | |
| 520 | a Delayed onset of muscle activation can be a descriptor of impaired motor control. Activation onset can be estimated from electromyography (EMG)-registered muscle excitation and from ultrasound-registered muscle motion, which enables non-invasive measurements in deep muscles. However, in voluntary activation, EMG-and ultrasound-detected activation onsets may not correspond. To evaluate this, ten healthy men performed isometric elbow flexion at 20% to 70% of their maximal force. Utilising a multi-channel electrode transparent to ultrasound, EMG and M(otion)-mode ultrasound were recorded simultaneously over the biceps brachii muscle. The time intervals between automated and visually estimated activation onsets were correlated with the regional variation of EMG and muscle motion onset, contraction level and speed. Automated and visual onsets indicated variable time intervals between EMG-and motion onset, median (interquartile range) 96 (121) ms and 48 (72) ms, respectively. In 17% (computed analysis) or 23% (visual analysis) of trials, motion onset was detected before local EMG onset. Multi-channel EMG and M-mode ultrasound revealed regional differences in activation onset, which decreased with higher contraction speed (Spearman rho amp;gt;= 0.45, P amp;lt; 0.001). In voluntary activation the heterogeneous motor unit recruitment together with immediate motion transmission may explain the high variation of the time intervals between local EMG-and ultrasound-detected activation onset. | |
| 650 | 7 | a TEKNIK OCH TEKNOLOGIERx Medicinteknikx Annan medicinteknik0 (SwePub)206992 hsv//swe |
| 650 | 7 | a ENGINEERING AND TECHNOLOGYx Medical Engineeringx Other Medical Engineering0 (SwePub)206992 hsv//eng |
| 700 | 1 | a Botter, Albertou Politecn Torino, Italy4 aut |
| 700 | 1 | a Martins Vieira, Taianu Politecn Torino, Italy; University of Federal Rio de Janeiro, Brazil4 aut |
| 700 | 1 | a Peolsson, Anneliu Linköpings universitet,Avdelningen för fysioterapi,Medicinska fakulteten4 aut0 (Swepub:liu)annpe35 |
| 700 | 1 | a Petzke, Franku University of Medical Centre, Germany4 aut |
| 700 | 1 | a Davey, Paulu Curtin University, Australia4 aut |
| 700 | 1 | a Falla, Deborahu University of Birmingham, England4 aut |
| 710 | 2 | a University of Medical Centre, Germanyb Politecn Torino, Italy4 org |
| 773 | 0 | t Scientific Reportsd : NATURE PUBLISHING GROUPg 7q 7x 2045-2322 |
| 856 | 4 | u https://liu.diva-portal.org/smash/get/diva2:1078842/FULLTEXT01.pdfx primaryx Raw objecty fulltext:print |
| 856 | 4 | u https://www.nature.com/articles/srep42011.pdf |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-134978 |
| 856 | 4 8 | u https://doi.org/10.1038/srep42011 |
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