Oscillations in neural drive and age-related reductions in force steadiness with a cognitive challenge

Journal of Applied Physiology
Hugo M PereiraSandra K Hunter

Abstract

A cognitive challenge when imposed during a low-force isometric contraction will exacerbate sex- and age-related decreases in force steadiness, but the mechanism is not known. We determined the role of oscillations in the common synaptic input to motor units on force steadiness during a muscle contraction with a concurrent cognitive challenge. Forty-nine young adults (19-30 yr; 25 women, 24 men) and 36 old adults (60-85 yr; 19 women, 17 men) performed a cognitive challenge (counting backward by 13) during an isometric elbow flexion task at 5% of maximal voluntary contraction. Single-motor units were decomposed from high-density surface EMG recordings. For a subgroup of participants, motor units were matched during control and cognitive challenge trials, so the same motor unit was analyzed across conditions. Reduced force steadiness was associated with greater oscillations in the synaptic input to motor units during both control and cognitive challenge trials ( r = 0.45-0.47, P < 0.01). Old adults and young women showed greater oscillations in the common synaptic input to motor units and decreased force steadiness when the cognitive challenge was imposed, but young men showed no change across conditions (session × age × sex, P <...Continue Reading

References

Nov 1, 1975·Journal of Psychiatric Research·M F FolsteinP R McHugh
Dec 1, 1989·Journal of Neurophysiology·R M EnokaA R Kossev
Aug 1, 1988·The Journal of Hospital Infection·J Cohen
Aug 1, 1982·The Journal of Physiology·C J De LucaA P Xenakis
Jul 1, 1994·Trends in Neurosciences·C J De Luca, Z Erim
Jan 1, 1993·European Journal of Applied Physiology and Occupational Physiology·A E MillerD G Sale
Nov 27, 1999·International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology·N V Volf, O M Razumnikova
Apr 12, 2000·Journal of Neurophysiology·A E GravesR M Enoka
Feb 24, 2001·The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences·T HortobágyiP DeVita
Jul 18, 2001·Journal of Applied Physiology·J T NoteboomR M Enoka
Feb 14, 2002·Journal of Applied Physiology·Brian L Tracy, Roger M Enoka
Dec 19, 2002·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Roger M EnokaBrian L Tracy
Apr 19, 2003·Journal of Neurophysiology·Anna M TaylorRoger M Enoka
Jun 29, 2004·Journal of Applied Physiology·Evangelos A ChristouRoger M Enoka
Apr 30, 2005·Nature Reviews. Neuroscience·Richard B SteinKelvin E Jones
May 17, 2005·Journal of the International Neuropsychological Society : JINS·Wim Van der ElstJelle Jolles
Sep 6, 2005·Psychoneuroendocrinology·Eero Kajantie, David I W Phillips
Jan 18, 2006·Annual Review of Medicine·Chand Khanna, Lee J Helman
Apr 1, 2006·Experimental Brain Research·Jacob J Sosnoff, Karl M Newell
Apr 28, 2006·Journal of Anatomy·Marco V Narici, Constantinos N Maganaris
Aug 5, 2006·Neuropsychology, Development, and Cognition. Section B, Aging, Neuropsychology and Cognition·Claudia Voelcker-RehageJay L Alberts
Aug 19, 2007·Psychonomic Bulletin & Review·Mark H Ashcraft, Jeremy A Krause
Jan 16, 2008·Physiological Reviews·Jun Tanji, Eiji Hoshi
Sep 5, 2009·Journal of Applied Physiology·Tejin YoonSandra K Hunter
Jan 21, 2010·Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society·Jennifer L Stephenson, Katrina S Maluf
Feb 11, 2010·IEEE Transactions on Neural Systems and Rehabilitation Engineering : a Publication of the IEEE Engineering in Medicine and Biology Society·Ales HolobarDario Farina
Apr 15, 2010·Gerontology·Iveta GrunteJohn P McCarthy
Aug 7, 2010·Medicine and Science in Sports and Exercise·Adam R MarmonRoger M Enoka
Aug 26, 2010·European Journal of Applied Physiology·Ruth E BrownJennifer M Jakobi
Jul 29, 2011·Journal of Neurophysiology·Francesco Negro, Dario Farina
Jan 10, 2012·Journal of Applied Physiology·Ashley N Johnson, Minoru Shinohara
Jan 17, 2012·Muscle & Nerve·Kyle C D McIntosh, David A Gabriel
Jul 21, 2012·Journal of Applied Biomechanics·Laura A Frey-LawKarim Abdel-Malek

❮ Previous
Next ❯

Citations

Apr 4, 2020·European Journal of Applied Physiology·Benjamín Guzmán-GonzálezCarlos Cruz-Montecinos
Apr 17, 2020·Frontiers in Integrative Neuroscience·Katie L Kowalski, Christie Anita D
Nov 3, 2020·International Journal of Sports Medicine·Rui WuGiuseppe De Vito
Feb 18, 2021·Physiology·Roger M Enoka, Dario Farina
May 7, 2021·Journal of Applied Physiology·Anderson Souza Oliveira, Francesco Negro
Jun 10, 2021·Journal of Neurophysiology·Tea Lulic-KurylloClark R Dickerson
Jul 21, 2021·International Journal of Sports Medicine·Georgios TrypidakisFrancesco Negro

❮ Previous
Next ❯

Software Mentioned

Statistical Package for Social Sciences ( SPSS )
Spike

Related Concepts

Related Feeds

Brain Lower Grade Glioma

Low grade gliomas in the brain form from oligodendrocytes and astrocytes and are the slowest-growing glioma in adults. Discover the latest research on these brain tumors here.