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Ciliary muscle contraction force and trapezius muscle activity during manual tracking of a moving visual target
Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning. Institute of Environmental Medicine, Karolinska Institute, Stockholm, Sweden.ORCID-id: 0000-0001-5777-4232
Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.
2016 (engelsk)Inngår i: Journal of Electromyography & Kinesiology, ISSN 1050-6411, E-ISSN 1873-5711, Vol. 28, s. 193-198Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Previous studies have shown an association of visual demands during near work and increased activity of the trapezius muscle. Those studies were conducted under stationary postural conditions with fixed gaze and artificial visual load. The present study investigated the relationship between ciliary muscle contraction force and trapezius muscle activity across individuals during performance of a natural dynamic motor task under free gaze conditions. Participants (N = 11) tracked a moving visual target with a digital pen on a computer screen. Tracking performance, eye refraction and trapezius muscle activity were continuously measured. Ciliary muscle contraction force was computed from eye accommodative response. There was a significant Pearson correlation between ciliary muscle contraction force and trapezius muscle activity on the tracking side (0.78, p < 0.01) and passive side (0.64, p < 0.05). The study supports the hypothesis that high visual demands, leading to an increased ciliary muscle contraction during continuous eye–hand coordination, may increase trapezius muscle tension and thus contribute to the development of musculoskeletal complaints in the neck–shoulder area. Further experimental studies are required to clarify whether the relationship is valid within each individual or may represent a general personal trait, when individuals with higher eye accommodative response tend to have higher trapezius muscle activity.

sted, utgiver, år, opplag, sider
2016. Vol. 28, s. 193-198
Emneord [en]
Ciliary muscle, Trapezius muscle, Near work
HSV kategori
Identifikatorer
URN: urn:nbn:se:hig:diva-20299DOI: 10.1016/j.jelekin.2015.11.008ISI: 000375923000025PubMedID: 26746010Scopus ID: 2-s2.0-84960859983OAI: oai:DiVA.org:hig-20299DiVA, id: diva2:855018
Forskningsfinansiär
Forte, Swedish Research Council for Health, Working Life and Welfare, 2005-0488Forte, Swedish Research Council for Health, Working Life and Welfare, 2009-1761Tilgjengelig fra: 2015-09-18 Laget: 2015-09-18 Sist oppdatert: 2018-12-03bibliografisk kontrollert

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Domkin, DmitryForsman, MikaelRichter, Hans

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