PMID: 490196Sep 1, 1979Paper

Neuronal mechanisms of human locomotion

Journal of Neurophysiology
V DietzJ Noth

Abstract

1. The surface electromyogram (EMG) of human leg muscles was recorded during running at different speeds; The EMG was compared with the simultaneously recorded vertical force exerted by the foot and with the angle of the ankle joint. 2. During running, the electrical activity of the gastrocnemius muscle increased sharply 35--45 ms after ground contact and reached its maximum at the end of muscle stretch; This activity was superimposed on a slowly increasing level of activation, which began 120--180 ms before ground contact. At the end of the stance phase, gastrocnemius became inactive and, simultaneously, there was a sudden increase in tibialis anterior activity. The assumption that the steep increase in the gastrocnemius EMG reflects the spinal stretch reflex of alpha-motoneurons is supported by the following findings. 3. The peak level of gastrocnemius EMG in the stance phase of fast running was 2--3 times higher than the activity during maximum voluntary contraction. 4. With stimulation of the tibial nerve at different rates, the maximum isometric force was about 30--40% higher than the maximum voluntary isometric contraction. 5. The increase in EMG at 35--45 ms after ground contact was markedly diminished during running, af...Continue Reading

Citations

Jul 2, 1998·Acta Physiologica Scandinavica·M VoigtE B Simonsen
Jan 4, 2001·The Journal of Physiology·D P FerrisP Dyhre-Poulsen
Mar 11, 2003·Journal of Neurophysiology·Sabine M P VerschuerenJacques Duysens
Jun 1, 2004·Journal of Applied Physiology·Chet T Moritz, Claire T Farley
Sep 24, 2005·Journal of Applied Physiology·Daniel P FerrisCatherine R Kinnaird
Jul 19, 2006·Experimental Brain Research·Tsuyoshi NakajimaTomoyoshi Komiyama
Mar 29, 2008·Bioinspiration & Biomimetics·Evan H PelcDaniel P Ferris
Sep 26, 2008·Exercise and Sport Sciences Reviews·Masaki Ishikawa, Paavo V Komi
Apr 5, 2011·Scandinavian Journal of Medicine & Science in Sports·W TaubeA Gollhofer
Feb 22, 2012·European Journal of Applied Physiology·Tetsuya OgawaKimitaka Nakazawa
Sep 14, 2015·Topics in Spinal Cord Injury Rehabilitation·Nicole D DiPiroChris M Gregory
Dec 1, 1993·Journal of Sports Sciences·J T ViitasaloJ Lahtinen
Jul 28, 2001·Medicine and Science in Sports and Exercise·H KyröläinenP V Komi
Feb 3, 1999·Annals of the New York Academy of Sciences·K G PearsonK Fouad
Aug 6, 2003·Medicine and Science in Sports and Exercise·Marko T KorhonenHarri Suominen
Oct 1, 2005·Journal of Sports Sciences·Heikki KyröläinenPaavo V Komi
Feb 13, 2007·Journal of Applied Biomechanics·Ken A McLachlanSven Rees
Sep 17, 2010·Journal of Strength and Conditioning Research·Mohamed Souhaiel ChellyRoy J Shephard
Nov 21, 2008·Journal of Neurophysiology·J M DonelanK G Pearson
Mar 1, 2005·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Lars KonradsenPer Renström
Jul 9, 2010·Journal of Strength and Conditioning Research·Konstantinos TsimahidisChristos Kotzamanidis
Nov 18, 2011·Exercise and Sport Sciences Reviews·Wolfgang TaubeAlbert Gollhofer
Dec 5, 2019·Scientific Reports·Atsuki Fukutani, Tadao Isaka
Nov 1, 1989·Acta Physiologica Scandinavica·T MoritaniP O Astrand
Jan 1, 1990·European Journal of Applied Physiology and Occupational Physiology·T MoritaniA Thorstensson
Jan 5, 2000·Physiological Reviews·J DuysensH Cruse
Jan 1, 1996·European Journal of Applied Physiology and Occupational Physiology·J AvelaP V Komi

❮ 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.