The Effects of Spinal Manipulation on Motor Unit Behavior

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aut.relation.articlenumber105en_NZ
aut.relation.issue1en_NZ
aut.relation.journalBrain Sciencesen_NZ
aut.relation.volume11en_NZ
aut.researcherDrabsch, Julie
dc.contributor.authorRobinault, Len_NZ
dc.contributor.authorHolobar, Aen_NZ
dc.contributor.authorCrémoux, Sen_NZ
dc.contributor.authorRashid, Uen_NZ
dc.contributor.authorNiazi, IKen_NZ
dc.contributor.authorHolt, Ken_NZ
dc.contributor.authorLauber, Jen_NZ
dc.contributor.authorHaavik, Hen_NZ
dc.date.accessioned2021-02-16T01:29:11Z
dc.date.available2021-02-16T01:29:11Z
dc.date.copyright2021en_NZ
dc.date.issued2021en_NZ
dc.description.abstractOver recent years, a growing body of research has highlighted the neural plastic effects of spinal manipulation on the central nervous system. Recently, it has been shown that spinal manipulation improved outcomes, such as maximum voluntary force and limb joint position sense, reflecting improved sensorimotor integration and processing. This study aimed to further evaluate how spinal manipulation can alter neuromuscular activity. High density electromyography (HD sEMG) signals from the tibialis anterior were recorded and decomposed in order to study motor unit changes in 14 subjects following spinal manipulation or a passive movement control session in a crossover study design. Participants were asked to produce ankle dorsiflexion at two force levels, 5% and 10% of maximum voluntary contraction (MVC), following two different patterns of force production (“ramp” and “ramp and maintain”). A significant decrease in the conduction velocity (p = 0.01) was observed during the “ramp and maintain” condition at 5% MVC after spinal manipulation. A decrease in conduction velocity suggests that spinal manipulation alters motor unit recruitment patterns with an increased recruitment of lower threshold, lower twitch torque motor units.en_NZ
dc.identifier.citationBrain Sciences, 11(1), 105. doi:10.3390/brainsci11010105
dc.identifier.doi10.3390/brainsci11010105en_NZ
dc.identifier.issn2076-3425en_NZ
dc.identifier.urihttps://hdl.handle.net/10292/13998
dc.languageenen_NZ
dc.publisherMDPI AGen_NZ
dc.relation.urihttps://www.mdpi.com/2076-3425/11/1/105
dc.rights© 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).
dc.rights.accessrightsOpenAccessen_NZ
dc.subjectHigh-density surface electromyography; Chiropractic; Electromyography decomposition; Motor unit
dc.titleThe Effects of Spinal Manipulation on Motor Unit Behavioren_NZ
dc.typeJournal Article
pubs.elements-id397113
pubs.organisational-data/AUT
pubs.organisational-data/AUT/Health & Environmental Science
pubs.organisational-data/AUT/Health & Environmental Science/Clinical Sciences
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