EMG signs of neuromuscular fatigue related to the ventilatory threshold during cycling exercise

Clinical Physiology and Functional Imaging
François HugYves Jammes

Abstract

We questioned whether electromyographic (EMG) signs of neuromuscular fatigue accompany the changes in respiratory variables measured at the ventilatory threshold (VTh) during exercise on a cycloergometer. This was based on the assumption that the activation of muscle afferents sensitive to accumulation of lactate and potassium is suspected to elicit both the EMG signs of fatigue and hyperventilation. In 39 subjects performing an incremental cycling, the EMG estimates of neuromuscular fatigue in vastus lateralis were a non-linear increase in root mean square (RMS), a decrease in median frequency (MF), a non-linear increase in low-frequency EMG energies (EL), and/or a decrease in high-frequency energies (EH). VTh was determined from a non-linear increase in VCO2 [VTh(VCO2 slope)] and an increased value of the respiratory equivalent for oxygen [VTh(VE/VO2)]. We measured a significant increase in venous blood concentration of lactate and potassium, and a significant pHv fall at VTh. One EMG estimate of fatigue was detected in 33/39 individuals and two EMG estimates in 17 subjects. Highly significant positive correlations were found between the oxygen uptakes corresponding to each EMG estimate and to each detection criterion of VTh....Continue Reading

References

Apr 12, 1979·European Journal of Applied Physiology and Occupational Physiology·J S Petrofsky
Jun 1, 1979·Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology·J A DavisK Wasserman
Mar 1, 1990·Journal of Applied Physiology·M SolomonowH Shoji
Jul 1, 1987·Journal of Neurophysiology·J J WoodsB Bigland-Ritchie
Jun 1, 1986·Journal of Applied Physiology·W L BeaverB J Whipp
Jan 1, 1987·European Journal of Applied Physiology and Occupational Physiology·J N HelalF Goubel
Jun 1, 1988·Journal of Applied Physiology·D M Rotto, M P Kaufman
Oct 1, 1986·The Journal of Physiology·B R Bigland-RitchieO C Lippold
Jan 1, 1986·European Journal of Applied Physiology and Occupational Physiology·J DuchateauK Hainaut
Jun 1, 1985·Journal of Applied Physiology·L B GladdenB A Stamford
Jun 1, 1985·Acta Physiologica Scandinavica·J T ViitasaloH Rusko
Jan 1, 1973·Journal of the Neurological Sciences·M A JohnsonD Appleton
Aug 1, 1973·Journal of Applied Physiology·K WassermanW L Beaver
Jul 1, 1972·The Journal of Physiology·D I McCloskey, J H Mitchell
Sep 1, 1982·The Journal of Physiology·B Bigland-RitchieJ J Woods
Aug 1, 1983·Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology·H KranzR B Silberstein
Oct 1, 1983·Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology·M P YehR O Crapo
Sep 1, 1983·Acta Physiologica Scandinavica·P A TeschJ T Viitasalo
Jul 1, 1983·The Journal of Physiology·B Bigland-RitchieJ J Woods
Nov 1, 1982·Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology·V J CaiozzoW C McMaster
Jul 1, 1981·IEEE Transactions on Bio-medical Engineering·F B Stulen, C J DeLuca
Jan 1, 1981·The Japanese Journal of Physiology·A NagataT Yoshida
Jan 1, 1995·European Journal of Applied Physiology and Occupational Physiology·E Marcos, J Ribas
Jan 1, 1994·European Journal of Applied Physiology and Occupational Physiology·A D Taylor, R Bronks
Apr 1, 1993·Journal of Applied Physiology·T MoritaniT Matsumoto
Dec 1, 1996·Medicine and Science in Sports and Exercise·T TakaishiT Moritani
Jan 1, 1997·European Journal of Applied Physiology and Occupational Physiology·R JansenA L Hof
Oct 4, 2000·Physiological Reviews·O M Sejersted, G Sjøgaard

❮ Previous
Next ❯

Citations

Sep 21, 2007·European Journal of Applied Physiology·Thomas RuppPerrey Stephane
May 26, 2009·European Journal of Applied Physiology·Kohei WatanabeHiroshi Akima
Apr 25, 2008·Canadian Journal of Physiology and Pharmacology·Cláudia Tarragô CandottiLino Pinto de Oliveira
Dec 17, 2009·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·C Roger JamesMichael P Smith
Mar 16, 2012·Psychophysiology·Sébastien Racinais, Olivier Girard
Jun 21, 2017·Sports Biomechanics·Tatiane PiuccoDarren Stefanyshyn
Jul 2, 2009·Medicine and Science in Sports and Exercise·Nicole MarquisFrançois Maltais
Sep 27, 2005·Sports Medicine·Chris R Abbiss, Paul B Laursen
Mar 16, 2012·Physiological Measurement·Olli TikkanenTaija Finni
Jul 25, 2013·International Journal of Sports Physiology and Performance·Gregory T LevinChris R Abbiss
Dec 25, 2015·Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquée, Nutrition Et Métabolisme·Jan BooneJan Bourgois
Aug 26, 2009·Journal of Strength and Conditioning Research·Kristina L KendallJeffrey R Stout
Oct 4, 2017·Frontiers in Physiology·Danilo IannettaJuan M Murias
Sep 22, 2017·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·Erin Calaine InglisJuan M Murias
Dec 19, 2017·Physiology & Behavior·Marcelo Magalhães SalesHerbert Gustavo Simões

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.