Analysis and measurement of neck loads
dc.contributor.author | Moroney, Sean P. | en_US |
dc.contributor.author | Schultz, Albert B. | en_US |
dc.contributor.author | Miller, James A. A. | en_US |
dc.date.accessioned | 2007-04-06T18:57:55Z | |
dc.date.available | 2007-04-06T18:57:55Z | |
dc.date.issued | 1988-09 | en_US |
dc.identifier.citation | Moroney, Sean P.; Schultz, Albert B.; Miller, James A. A. (1988)."Analysis and measurement of neck loads." Journal of Orthopaedic Research 6(5): 713-720. <http://hdl.handle.net/2027.42/50381> | en_US |
dc.identifier.issn | 0736-0266 | en_US |
dc.identifier.issn | 1554-527X | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/50381 | |
dc.identifier.uri | http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=retrieve&db=pubmed&list_uids=3404328&dopt=citation | en_US |
dc.description.abstract | To examine the loads imposed on the structures of the neck by the performance of physical tasks, a biomechanical model of the neck was constructed. The model incorporated 14 bilateral pairs of muscle equivalents crossing the C4 level. A double linear programming optimization scheme that minimized maximum muscle contraction intensity and then vertebral compression force while equilibrating external loads was used to calculate the muscle contraction forces required and the motion segment reactions produced by task performance. To test model validity, 14 healthy adult subjects performed a series of isometric tasks requiring use of their neck muscles. These tasks included exertions in attempted flexion, extension, and left and right lateral bending and twisting. Subjects exerted maximum and submaximum voluntary efforts. During the performance, surface myoelectric activities were recorded at eight locations around the periphery of the neck at the C4 level. Calculated forces and measured myoelectric activities were then linearly correlated. Mean measured voluntary neck strengths in 10 male subjects were as large as 29.7 Nm. Four female subjects developed mean strengths that were approximately 60%–90% of those of the males. In both sexes, neck muscle strengths were approximately one order of magnitude lower than previously measured lumbar trunk strengths. Mean calculated neck muscle contraction forces ranged to 180 N. Mean calculated compression forces on the C4-5 motion segment ranged to 1164 N, lateral shear forces ranged to 125 N, and anteroposterior shear forces ranged to 135 N. Correlation coefficients between the calculated muscle forces and the measured myoelectric activities were as large as 0.85 in some muscles, but generally were smaller than this. | en_US |
dc.format.extent | 736339 bytes | |
dc.format.extent | 3118 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.publisher | Wiley Subscription Services, Inc., A Wiley Company | en_US |
dc.subject.other | Life and Medical Sciences | en_US |
dc.title | Analysis and measurement of neck loads | en_US |
dc.type | Article | en_US |
dc.rights.robots | IndexNoFollow | en_US |
dc.subject.hlbtoplevel | Health Sciences | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan, U.S.A. | en_US |
dc.contributor.affiliationum | Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan, U.S.A. ; University of Michigan, Ann Arbor, MI 48109-2125, U.S.A. | en_US |
dc.contributor.affiliationum | Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan, U.S.A. | en_US |
dc.identifier.pmid | 3404328 | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/50381/1/1100060514_ftp.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1002/jor.1100060514 | en_US |
dc.identifier.source | Journal of Orthopaedic Research | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
Files in this item
Remediation of Harmful Language
The University of Michigan Library aims to describe library materials in a way that respects the people and communities who create, use, and are represented in our collections. Report harmful or offensive language in catalog records, finding aids, or elsewhere in our collections anonymously through our metadata feedback form. More information at Remediation of Harmful Language.
Accessibility
If you are unable to use this file in its current format, please select the Contact Us link and we can modify it to make it more accessible to you.