Co-contraction of the pronator teres and extensor carpi radialis during wrist extension movements in humans

Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology
Hiromi FujiiA Naito

Abstract

In order to elucidate the functional significance of excitatory spinal reflex arcs (facilitation) between musculus (M.) pronator teres (PT) and M. extensor carpi radialis (ECR, longus: ECRL, brevis: ECRB) in humans, activities of the muscles were studied with electromyography (EMG) and electrical neuromuscular stimulation (ENS). In EMG study, activities of PT, ECRL, ECRB, and M. flexor carpi radialis during repetitive static (isometric) wrist extension and a series of a dynamic motion of wrist flexion/extension in the prone, semiprone, and supine positions of the forearm were recorded in 12 healthy human subjects. In the prone, semiprone, and supine positions, PT and ECR showed parallel activities during the static extension in all, eight, and eight subjects, respectively, and at the extension phase during the dynamic motion in all, eight and five subjects, respectively. These findings suggest that co-contraction of PT and ECR occurs during wrist extension movements at least with the prone forearm. The facilitation must be active during the co-contraction. In ENS study, ENS to PT was examined in 11 out of the 12 and that to ECRL was in the 12 subjects. Before ENS, the forearm was in the prone, semiprone, and supine positions. I...Continue Reading

References

Mar 1, 1978·The Journal of Hand Surgery·J A Albright, R M Linburg
Jul 1, 1989·IEEE Transactions on Bio-medical Engineering·Y HandaT Oda
Apr 1, 1984·The Journal of Physiology·B L DayJ C Rothwell
Dec 1, 1994·The Tohoku Journal of Experimental Medicine·A NaitoY Shimizu
Oct 1, 1996·Experimental Brain Research·A NaitoH Morita
Aug 11, 1998·Experimental Brain Research·A NaitoM Chishima
May 16, 2000·The Journal of Physiology·V Marchand-PauvertE Pierrot-Deseilligny
Sep 2, 2000·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·S RiekA Wright
Jul 18, 2002·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·A NaitoY-J Sun
Jun 6, 2007·The Tohoku Journal of Experimental Medicine·Takuji MiyasakaMakoto Chishima

❮ Previous
Next ❯

Citations

Dec 10, 2013·The Journal of Hand Surgery·Antonio García-LópezAdaly Rojas
Dec 30, 2015·The Journal of Hand Surgery·Koji SukegawaKazuki Kuniyoshi
Jul 20, 2010·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Masaaki SagaeAkira Naito
Dec 6, 2017·Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society·Mitsuhiro NitoAkira Naito
Nov 30, 2012·Plastic and Reconstructive Surgery·Jayme A BertelliHamilton Duarte

❮ 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.

© 2021 Meta ULC. All rights reserved