ArticleEuropean journal of applied physiology2015
Trapezius muscle activity increases during near work activity regardless of accommodation/vergence demand level.
Article in European journal of applied physiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03517410 (Association Between the Duration of Smart Phone Use and Back Dysfunction in Patients With Chronic Mechanical Low Back Pain), which is not on this map. Cited by 8 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Association Between the Duration of Smart Phone Use and Back Dysfunction in Patients With Chronic Mechanical Low Back Pain
Who cites it
8 citing papers in PubMed.
- From the Ocular Surface to Neurophysiology: An Integrative Review of Digital Eye Strain.Clinical optometry · 2026Review
- Associations Between Visual Accommodation and Cervical Muscle Activity and Symptomatology: A Systematic Review.Journal of functional morphology and kinesiology · 2025Review
- Effects of Warm and Cold Contrast Footbaths on Psychological and Physiological Responses in Healthy Adults.Journal of chiropractic medicine · 2025Article
- Effects of school myopia management measures on myopia onset and progression among Chinese primary school students.BMC public health · 2023Observational
- Effectiveness of an Eye-Cervical Re-Education Program in Chronic Neck Pain: A Randomized Clinical Trial.Evidence-based complementary and alternative medicine : eCAM · 2020Article
- Nonstrabismic binocular dysfunctions and cervical complaints: The possibility of a cross-dysfunction.PloS one · 2019Article
- Prefrontal Cortex Oxygenation Evoked by Convergence Load Under Conflicting Stimulus-to-Accommodation and Stimulus-to-Vergence Eye-Movements Measured by NIRS.Frontiers in human neuroscience · 2018Article
- Reliability and Validity of the Visual, Musculoskeletal, and Balance Complaints Questionnaire.Optometry and vision science : official publication of the American Academy of Optometry · 2016Article
Corrections and comments
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
aimTo investigate if trapezius muscle activity increases over time during visually demanding near work.
methodsThe vision task consisted of sustained focusing on a contrast-varying black and white Gabor grating. Sixty-six participants with a median age of 38 (range 19-47) fixated the grating from a distance of 65 cm (1.5 D) during four counterbalanced 7-min periods: binocularly through -3.5 D lenses, and monocularly through -3.5 D, 0 D and +3.5 D. Accommodation, heart rate variability and trapezius muscle activity were recorded in parallel.
resultsGeneral estimating equation analyses showed that trapezius muscle activity increased significantly over time in all four lens conditions. A concurrent effect of accommodation response on trapezius muscle activity was observed with the minus lenses irrespective of whether incongruence between accommodation and convergence was present or not.
conclusionsTrapezius muscle activity increased significantly over time during the near work task. The increase in muscle activity over time may be caused by an increased need of mental effort and visual attention to maintain performance during the visual tasks to counteract mental fatigue.
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