ArticleExperimental brain research2017
Variability in spatio-temporal pattern of trapezius activity and coordination of hand-arm muscles during a sustained repetitive dynamic task.
Article in Experimental brain research, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed.
- Article
- Neuromotor variability partially explains different endurance capacities of expert pianists.Scientific reports · 2023Article
- A Subject-Tailored Variability-Based Platform for Overcoming the Plateau Effect in Sports Training: A Narrative Review.International journal of environmental research and public health · 2022Review
- Fatigue, Stress, and Performance during Alternating Physical and Cognitive Tasks-Effects of the Temporal Pattern of Alternations.Annals of work exposures and health · 2021Article
- Stress-Related Responses to Alternations between Repetitive Physical Work and Cognitive Tasks of Different Difficulties.International journal of environmental research and public health · 2020Article
- High-density surface electromyography signals during isometric contractions of elbow muscles of healthy humans.Scientific data · 2020Article
- Sex differences in muscle activity and motor variability in response to a non-fatiguing repetitive screwing task.Biology of sex differences · 2020Article
- Peripheral fatigue: new mechanistic insights from recent technologies.European journal of applied physiology · 2020Review
- The Role of Motor Learning on Measures of Physical Requirements and Motor Variability During Repetitive Screwing.International journal of environmental research and public health · 2019Article
- An oculometrics-based biofeedback system to impede fatigue development during computer work: A proof-of-concept study.PloS one · 2019Article
- Sex differences in kinematic adaptations to muscle fatigue induced by repetitive upper limb movements.Biology of sex differences · 2018Article
- Normalization of the trapezius sEMG signal - a reliability study on women with and without neck-shoulder pain.Brazilian journal of physical therapyArticle
- Force Variability in the Short- and Long-Term Type 2 Diabetes Mellitus.Journal of medical signals and sensorsArticle
Corrections and comments
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Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The spatio-temporal distribution of muscle activity has been suggested to be a determinant of fatigue development. Pursuing this hypothesis, we investigated the pattern of muscular activity in the shoulder and arm during a repetitive dynamic task performed until participants' rating of perceived exertion reached 8 on Borg's CR-10 scale. We collected high-density surface electromyogram (HD-EMG) over the upper trapezius, as well as bipolar EMG from biceps brachii, triceps brachii, deltoideus anterior, serratus anterior, upper and lower trapezius from 21 healthy women. Root-mean-square (RMS) and mean power frequency (MNF) were calculated for all EMG signals. The barycenter of RMS values over the HD-EMG grid was also determined, as well as normalized mutual information (NMI) for each pair of muscles. Cycle-to-cycle variability of these metrics was also assessed. With time, EMG RMS increased for most of the muscles, and MNF decreased. Trapezius activity became higher on the lateral side than on the medial side of the HD-EMG grid and the barycenter moved in a lateral direction. NMI between muscle pairs increased with time while its variability decreased. The variability of the metrics during the initial 10 % of task performance was not associated with the time to task termination. Our results suggest that the considerable variability in force and posture contained in the dynamic task per se masks any possible effects of differences between subjects in initial motor variability on the rate of fatigue development.
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