The effects of muscle vibration on anticipatory postural adjustments

Brain Research
H Slijper, M L Latash

Abstract

The current study investigated the influence of changes in sensory information related to postural stability on anticipatory postural adjustments (APAs) in standing subjects. Subjects performed fast arm movements and a load release task while standing on a stable force platform or on an unstable board. We manipulated sensory information through vibration of the Achilles tendons and additional finger touch (contact forces under 1 N). Changes in the background activity of leg, trunk, and arm muscles and displacements of the center of pressure (COP) were quantified within time intervals typical for APAs. In the arm movement task, leg and trunk muscles showed a significant drop in the APAs with finger touch, while the vibration and standing on the unstable board each led to an increase in the APA magnitude. In the load release task, ventral muscles decreased their APA activity with touch, while dorsal muscles showed increased inhibition during APAs. During vibration, dorsal and ventral muscles showed increased excitation and inhibition during APAs, respectively. An additional analysis of APAs at a joint level, has shown that in both tasks, an index related to the co-activation of agonist-antagonist muscle pairs (C-index) was modula...Continue Reading

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Citations

Jan 25, 2008·Experimental Brain Research·Isabelle OlivierVincent Nougier
Jun 4, 2008·Experimental Brain Research·Alessander Danna-Dos-SantosMark L Latash
Jun 7, 2011·Experimental Brain Research·Vennila Krishnan, Alexander S Aruin
Dec 27, 2011·Experimental Brain Research·Sambit MohapatraAlexander S Aruin
Sep 13, 2012·Experimental Brain Research·Beom-Chan LeeKathleen H Sienko
Sep 11, 2009·Journal of Neurophysiology·Karen L Bunday, Adolfo M Bronstein
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Dec 8, 2015·Human Movement Science·Andreia S P SousaJoão Manuel R S Tavares
Sep 26, 2015·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Yun-Ju LeeAlexander S Aruin
Apr 14, 2016·Somatosensory & Motor Research·David R TempleCharles S Layne
Sep 26, 2013·Human Movement Science·Andreia S P SousaJoão Manuel R S Tavares
Jan 21, 2015·Experimental Brain Research·Bernard J MartinKathleen H Sienko
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Apr 10, 2020·Research in Sports Medicine·Zhuoyue ZhaoYun Wang
Jan 31, 2017·Frontiers in Human Neuroscience·Normand TeasdaleMartin Simoneau
Mar 17, 2019·Experimental Brain Research·Alethéa Gomes NardiniMark L Latash
Aug 26, 2017·Experimental Brain Research·Bing ChenAlexander S Aruin
Nov 21, 2021·Experimental Brain Research·Adeolu AdemiluyiAlexander S Aruin

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