ArticleExperimental brain research2007
Periodic increases in force during sustained contraction reduce fatigue and facilitate spatial redistribution of trapezius muscle activity.
Article in Experimental brain research, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 2 of them syntheses that pooled it.
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Who cites it
19 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Work-break interventions for preventing musculoskeletal symptoms and disorders in healthy workers.The Cochrane database of systematic reviews · 2025Pooled it
- Work-break schedules for preventing musculoskeletal symptoms and disorders in healthy workers.The Cochrane database of systematic reviews · 2019Pooled it
- Longitudinal analysis of neuromuscular adaptation using entropy and PCA during motor learning.Journal of physiological anthropology · 2026Article
- Impact of 10-Min Daily Yoga Exercises on Physical and Mental Discomfort of Home-Office Workers During COVID-19.Human factors · 2023Article
- Neuromuscular Fatigue Affects Calf Muscle Activation Strategies, but Not Dynamic Postural Balance Control in Healthy Young Adults.Frontiers in physiology · 2022Article
- Spatial Distribution and Asymmetry of Surface Electromyography on Lumbar Muscles of Soldiers with Chronic Low Back Pain.Pain research & management · 2020Article
- Central and Peripheral Shoulder Fatigue Pre-screening Using the Sigma-Lognormal Model: A Proof of Concept.Frontiers in human neuroscience · 2020Article
- 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
- Neuromuscular Control and Performance Differences Associated With Gender and Obesity in Fatiguing Tasks Performed by Older Adults.Frontiers in physiology · 2018Article
- Trapezius muscle activity and body movement at the beginning and the end of a workday and during the lunch period in female office employees.Industrial health · 2017Article
- Variability in spatio-temporal pattern of trapezius activity and coordination of hand-arm muscles during a sustained repetitive dynamic task.Experimental brain research · 2017Article
- Shear wave elastography reveals different degrees of passive and active stiffness of the neck extensor muscles.European journal of applied physiology · 2017Article
- Can cognitive activities during breaks in repetitive manual work accelerate recovery from fatigue? A controlled experiment.PloS one · 2014Article
- The contribution of office work to sedentary behaviour associated risk.BMC public health · 2013Observational
- Variation of force amplitude and its effects on local fatigue.European journal of applied physiology · 2012Article
- Active biofeedback changes the spatial distribution of upper trapezius muscle activity during computer work.European journal of applied physiology · 2010Article
- Fatigue and motor redundancy: adaptive increase in finger force variance in multi-finger tasks.Journal of neurophysiology · 2010Article
- Scapular muscle activation and co-activation following a fatigue task.Medical & biological engineering & computing · 2009Article
- Non-uniform adaptation of motor unit discharge rates during sustained static contraction of the upper trapezius muscle.Experimental brain research · 2008Article
Corrections and comments
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Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
This study compared fatigue and the spatial distribution of upper trapezius electromyographic (EMG) amplitude during a 6-min constant force shoulder elevation task at 20% of the maximal voluntary contraction force (MVC) (constant force) and during the same task interrupted by brief (2 s) periodic increases in force to 25% MVC every 30 s (variable force). Surface EMG signals were recorded with a 13 x 5 grid of electrodes from the upper trapezius muscle of nine healthy subjects. The centroid (center of activity) of the EMG root mean square map was computed to assess changes over time in the spatial distribution of EMG amplitude. MVC force decreased by (mean +/- SD) 9.0 +/- 3.9% after the constant force task (P < 0.05) but was unchanged following the variable force contraction. The centroid of EMG amplitude shifted in the cranial direction across the duration of the variable force contraction (P < 0.05) but not during the constant force contraction (shift of 2.9 +/- 2.3 mm and 1.4 +/- 1.1 mm, respectively). The results demonstrate that periodic increases in force during a sustained contraction enhance the modifications in spatial distribution of upper trapezius EMG amplitude and reduce fatigue compared to a constant force contraction performed at a lower average load. The change in spatial distribution of EMG amplitude over time during a sustained contraction may reflect a mechanism to counteract fatigue during prolonged muscle activity.
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Registered trials
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