The spatial dependency of shoulder muscular demands during upward and downward exertions

Ergonomics
Alicia L NadonClark R Dickerson

Abstract

Lifting and lowering are common occupational tasks contributing to shoulder injury risk. Quantifying task interaction with physical demand can precipitate better workstation designs. Nineteen university-aged males performed one-handed, submaximal upward/downward manual force exertions at 70 hand locations; unilateral electromyography (EMG) of 14 muscles was recorded. EMG across planes was evaluated with ANOVA. Predictive equations for muscle activity throughout the reach envelope were developed with stepwise regression. Total muscle activity (sum of individual muscle activity) was most sensitive to vertical hand location for upward exertions, where activation at superior locations was 192% of values for inferior locations. For upward exertions, activation differences for hand location occurred along all anatomical axes, and along anterior/posterior and superior/inferior axes for downward exertions. Predictive equations were non-linear, reflecting complex muscular demand with three-dimensional hand location. This work details foundational exposure data for lifting/lowering exertions. Results are applicable to workstation design to minimise occupational shoulder muscular demands. Practitioner Summary: Lifting and lowering in the ...Continue Reading

References

Jul 1, 1975·American Industrial Hygiene Association Journal·D B Chaffin
Jan 1, 1988·European Journal of Applied Physiology and Occupational Physiology·K JørgensenB Jensen
May 1, 1994·Journal of Biomechanics·F C van der Helm
Sep 1, 1996·British Journal of Sports Medicine·P J McNairS N Stanley
Jan 1, 1996·European Journal of Applied Physiology and Occupational Physiology·D M FothergillA D Pinder
Jul 9, 1998·Spine·L K Kamibayashi, F J Richmond
Dec 5, 2000·European Journal of Applied Physiology·M Waersted
Apr 19, 2005·Expert Review of Molecular Diagnostics·Jeffrey A Kant
May 19, 2007·Ergonomics·C R DickersonD B Chaffin
Dec 11, 2007·International Archives of Occupational and Environmental Health·Catarina NordanderStaffan Skerfving
Feb 22, 2008·Current Cancer Drug Targets·P Sapra SharmaR Tyagi
Jul 24, 2008·The Tohoku Journal of Experimental Medicine·Shinichi DemuraYoshinori Nagasawa
Sep 12, 2008·Journal of Occupational and Environmental Medicine·Barbara A SilversteinEira Viikari-Juntura
Dec 20, 2008·Journal of Shoulder and Elbow Surgery·Philippe FavreChristian Gerber
Feb 24, 2009·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Steven L FischerClark R Dickerson
Mar 17, 2009·Clinical Biomechanics·Mario CifrekSasa Ostojić
May 29, 2009·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Nicholas T Antony, Peter J Keir
Sep 30, 2009·Ergonomics·Catarina NordanderStaffan Skerfving
Nov 3, 2009·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Jaclyn N ChoppClark R Dickerson
Nov 26, 2009·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Danielle L WaiteClark R Dickerson
Jan 23, 2010·Scandinavian Journal of Work, Environment & Health·Rogier M van RijnAlex Burdorf
May 5, 2010·The Journal of Bone and Joint Surgery. American Volume·H Mike KimJay D Keener
Dec 1, 1995·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·S E MathiassenG M Hägg
Jun 1, 1997·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·J R Potvin, L R Bent
Oct 12, 2010·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Dennis Landin, Melissa Thompson
Feb 10, 2012·Work : a Journal of Prevention, Assessment, and Rehabilitation·Divya Srinivasan, Svend Erik Mathiassen
Mar 3, 2012·Applied Ergonomics·Alison McDonaldClark R Dickerson
Aug 2, 2012·Occupational Medicine·J BeachN Cherry
Apr 4, 2013·Journal of Applied Biomechanics·Alison C McDonaldClark R Dickerson
Jun 15, 2013·Medical & Biological Engineering & Computing·Rebecca L Brookham, Clark R Dickerson
Jul 11, 2013·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Larissa FedorowichJulie N Côté
Sep 10, 2013·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Tyler R AllenClark R Dickerson

❮ Previous
Next ❯

Citations

Dec 23, 2016·International Journal of Occupational Safety and Ergonomics : JOSE·Kimberly A MeszarosClark R Dickerson
Aug 14, 2018·Applied Ergonomics·Daniel C McFarlandKatherine R Saul

❮ Previous
Next ❯

Software Mentioned

LabView
JMP

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.