id:"swepub:oai:DiVA.org:hig-16689"
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- Zetterberg, Camilla,1970-Uppsala universitet,Högskolan i Gävle,Arbetshälsovetenskap,Centrum för belastningsskadeforskning,Department of Medical Sciences, Section of Occupational and Environmental Medicine, Uppsala University, Uppsala, Sweden.,Arbets- och miljömedicin,University of Gävle, Department of Occupational and Public Health Sciences, Centre for Musculoskeletal Research (author)
Temporal co-variation between eye lens accommodation and trapezius muscle activity during a dynamic near-far visual task
- Article/chapterEnglish2015
Publisher, publication year, extent ...
- 2015-05-11
- Public Library of Science (PLoS),2015
- printrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:hig-16689
- https://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-16689URI
- https://doi.org/10.1371/journal.pone.0126578DOI
- https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-297085URI
- https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-256526URI
- http://kipublications.ki.se/Default.aspx?queryparsed=id:131317481URI
Supplementary language notes
- Language:English
- Summary in:English
Part of subdatabase
- SwePubSwePub
Classification
Notes
- QC 20210618
- Near work is associated with increased activity in the neck and shoulder muscles, but the underlying mechanism is still unknown. This study was designed to determine whether a dynamic change in focus, alternating between a nearby and a more distant visual target, produces a direct parallel change in trapezius muscle activity. Fourteen healthy controls and 12 patients with a history of visual and neck/shoulder symptoms performed a Near-Far visual task under three different viewing conditions; one neutral condition with no trial lenses, one condition with negative trial lenses to create increased accommodation, and one condition with positive trial lenses to create decreased accommodation. Eye lens accommodation and trapezius muscle activity were continuously recorded. The trapezius muscle activity was significantly higher during Near than during Far focusing periods for both groups within the neutral viewing condition, and there was a significant co-variation in time between accommodation and trapezius muscle activity within the neutral and positive viewing conditions for the control group. In conclusion, these results reveal a connection between Near focusing and increased muscle activity during dynamic changes in focus between a nearby and a far target. A direct link, from the accommodation/vergence system to the trapezius muscles cannot be ruled out, but the connection may also be explained by an increased need for eye-neck (head) stabilization when focusing on a nearby target as compared to a more distant target.
Subject headings and genre
- MEDICIN OCH HÄLSOVETENSKAP Hälsovetenskap Arbetsmedicin och miljömedicin hsv//swe
- MEDICAL AND HEALTH SCIENCES Health Sciences Occupational Health and Environmental Health hsv//eng
- Accommodation
- Ciliary muscle
- Computer work
- Electromyography
- Eye-neck (head) stabilization
- Gaze stabilization
- Visual ergonomics
Added entries (persons, corporate bodies, meetings, titles ...)
- Richter, Hans,1961-Högskolan i Gävle,Arbetshälsovetenskap,Centrum för belastningsskadeforskning(Swepub:hig)hrr (author)
- Forsman, Mikael,1963-Karolinska Institutet,Högskolan i Gävle,Arbetshälsovetenskap,Centrum för belastningsskadeforskning,Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden(Swepub:kth)u1iq0ct2 (author)
- Högskolan i GävleArbetshälsovetenskap (creator_code:org_t)
Related titles
- In:PLOS ONE: Public Library of Science (PLoS)10:51932-6203
Internet link
- https://doi.org/10.1371/journal.pone.0126578Fulltext
- https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0126578&type=printable
- https://uu.diva-portal.org/smash/get/diva2:827043/FULLTEXT01.pdffulltext:print
- https://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-16689
- https://doi.org/10.1371/journal.pone.0126578
- https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-297085
- https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-256526
- http://kipublications.ki.se/Default.aspx?queryparsed=id:131317481
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