An algorithm for defining the onset and cessation of the flexion-relaxation phenomenon in the low back musculature

Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology
Sangeun JinG A Mirka

Abstract

The flexion-relaxation phenomenon (FRP) in the low back provides insights into the interplay between the active and passive tissues. Establishing a reliable algorithm for defining the lumbar angle at which the muscles deactivate and reactivate was the focus of the current paper. First, the EMG data were processed using six different smoothing techniques (no smoothing, moving average, moving standard deviation, Butterworth low pass filter at 0.5 Hz, 5 Hz, and 50 Hz) herein called the processed EMG (pEMG). The FRP points were then defined using four thresholds (pEMG less than 3% MVC, pEMG less than 5% MVC, pEMG less than 2 times FRP pEMG, and pEMG less than 3 times FRP pEMG). Finally, a duration requirement was tested (no duration requirement, pEMG data must maintain threshold requirement for 50 data points). Each combination of smoothing, threshold, and duration were applied through a computer program to each muscle for all trials and established an EMG-off and EMG-on angle for each muscle. These estimates were compared to the gold standard of expert-identified EMG-off and EMG-on angles and the root mean square error (RMSE) between this gold standard and the predictions of the algorithms served as the dependent variable. The res...Continue Reading

References

Mar 1, 1990·Acta Physiologica Scandinavica·P A TeschR T Harris
Jan 1, 1985·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·A B SchultzD N Warwick
Feb 24, 2001·European Journal of Applied Physiology·Q M Huang, A Thorstensson
Mar 27, 2001·Journal of Biomechanics·A Gupta
Apr 12, 2003·Clinical Biomechanics·Moshe SolomonowBing He Zhou
Oct 7, 2003·Clinical Biomechanics·James P DickeyJames R Potvin
Sep 3, 2004·Clinical Biomechanics·Michael W OlsonMoshe Solomonow
Oct 18, 2005·Journal of Manipulative and Physiological Therapeutics·Christopher J Colloca, Richard N Hinrichs
Jan 26, 2008·BMC Musculoskeletal Disorders·Martin DescarreauxVincent Cantin
Aug 1, 2009·Spine·Gwanseob ShinYu-Hsun Liu
Dec 1, 1995·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·S E MathiassenG M Hägg
Oct 15, 2010·Clinical Biomechanics·Xiaopeng NingGary A Mirka

❮ Previous
Next ❯

Citations

Dec 18, 2013·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Brad D Hendershot, Maury A Nussbaum
Feb 22, 2016·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Danielle M Stewart, Diane E Gregory
Jul 13, 2013·Journal of Manipulative and Physiological Therapeutics·Alison Schinkel-IvyJanessa D M Drake
May 7, 2013·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Samuel J HowarthRyan B Graham
Feb 6, 2013·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Samuel J HowarthTyson A C Beach
Jun 9, 2016·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Derek P ZwambagStephen H M Brown
May 19, 2018·International Journal of Environmental Research and Public Health·Tim K S LuiAnthony W L Kwok
Jul 31, 2013·Journal of Biomechanical Engineering·Samuel J Howarth, Paul Mastragostino
Dec 20, 2017·Annals of Biomedical Engineering·Derek P ZwambagStephen H M Brown
Jun 29, 2018·Journal of Physical Therapy Science·Yuko Takahashi, Takehiko Yamaji
Sep 3, 2021·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Mark JesunathadasTrenton E Gould
Sep 24, 2021·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Anaïs GouteronStéphane Genevay

❮ 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.

Related Papers

Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology
L C Brereton, S M McGill
Journal of Manipulative and Physiological Therapeutics
Kim LalanneMartin Descarreaux
© 2022 Meta ULC. All rights reserved