ArticleEuropean journal of applied physiology2013
Uneven spatial distribution of surface EMG: what does it mean?
Article in European journal of applied physiology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.
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Who cites it
21 citing papers in PubMed.
- Shoulder kinematics and spatial pattern of trapezius electromyographic activity in real and virtual environments.PloS one · 2015Trial
- High-Density Surface Electromyography Excitation in Front vs. Back Overhead Press Prime Movers.Journal of human kinetics · 2026Article
- High-Density Surface Electromyography Excitation of Prime Movers Across Scapular Positions in the Seated Row.Journal of functional morphology and kinesiology · 2025Article
- Neuromechanical basis of region-specific differences and their implications for sport performance and injury prevention: a narrative review.European journal of applied physiology · 2025Review
- Article
- Assessment of arthrogenic quadriceps muscle inhibition by physical examination in the supine position during isometric contraction is feasible as demonstrated by electromyography: a cross-sectional study.Journal of orthopaedic surgery and research · 2024Article
- High-Density Electromyography Excitation in Front vs. Back Lat Pull-Down Prime Movers.Journal of human kinetics · 2024Article
- Novel Metrics for High-Density sEMG Analysis in the Time-Space Domain During Sustained Isometric Contractions.IEEE open journal of engineering in medicine and biology · 2024Article
- Customizable, reconfigurable, and anatomically coordinated large-area, high-density electromyography from drawn-on-skin electrode arrays.PNAS nexus · 2023Article
- Cervical spine and muscle adaptation after spaceflight and relationship to herniation risk: protocol from 'Cervical in Space' trial.BMC musculoskeletal disorders · 2022Article
- Maintenance of standing posture during multi-directional leaning demands the recruitment of task-specific motor units in the ankle plantarflexors.Experimental brain research · 2021Article
- Variation in the spatial distribution of erector spinae activity during a lumbar endurance task in people with low back pain.Journal of anatomy · 2019Observational
- Spatial Reorganization of Myoelectric Activities in Extensor Digitorum for Sustained Finger Force Production.Sensors (Basel, Switzerland) · 2019Article
- Relationship between Isometric Muscle Force and Fractal Dimension of Surface Electromyogram.BioMed research international · 2018Article
- Variability in spatio-temporal pattern of trapezius activity and coordination of hand-arm muscles during a sustained repetitive dynamic task.Experimental brain research · 2017Article
- Regional activation within the vastus medialis in stimulated and voluntary contractions.Journal of applied physiology (Bethesda, Md. : 1985) · 2016Article
- Evaluation of Novel EMG Biofeedback for Postural Correction During Computer Use.Applied psychophysiology and biofeedback · 2016Article
- Spatial EMG potential distribution of biceps brachii muscle during resistance training and detraining.European journal of applied physiology · 2015Article
- Functional connectivity between core and shoulder muscles increases during isometric endurance contractions in judo competitors.European journal of applied physiology · 2015Article
- Article
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The aim of this work is to show how changes in surface electromyographic activity (sEMG) during a repetitive, non-constant force contraction can be detected and interpreted on the basis of the amplitude distribution provided by high-density sEMG techniques. Twelve healthy male subjects performed isometric shoulder elevations, repeating five times a force ramp profile up to 25 % of the maximal voluntary contraction (MVC). A 64-electrode matrix was used to detect sEMG from the trapezius muscle. The sEMG amplitude distribution was obtained for the force levels in the range 5-25 % MVC with steps of 5 % MVC. The effect of force level, subject, electrode position and ramp repetition on the sEMG amplitude distribution was tested. The sEMG amplitude was significantly smaller in the columns of the electrode grid over the tendons (repeated measures ANOVA, p < 0.01). The barycentre of the distribution of sEMG amplitude was subject-specific (Kruskal-Wallis test, p < 0.01), and shifted caudally with the increase of force levels and cranially with the repetition of the motor task (both p < 0.01, repeated measures ANOVA). The results are discussed in terms of motor unit recruitment in different muscle sub-portions. It is concluded that the sEMG amplitude distribution obtained by multichannel techniques provides useful information in the study of muscle activity, and that changes in the spatial distribution of the recruited motor units during a force varying isometric contraction might partially explain the variability observed in the activation pattern of the upper trapezius muscle.
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Registered trials
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