Trial reportEuropean journal of applied physiology2007
Electromyogram and perceived fatigue changes in the trapezius muscle during typewriting and recovery.
Trial report in European journal of applied physiology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
7 citing papers in PubMed, 50 citations in OpenAlex.
- Effects of the Interactive Features of Virtual Partner on Individual Exercise Level and Exercise Perception.Behavioral sciences (Basel, Switzerland) · 2023Article
- Age Modulates the Effects of Mental Fatigue on Typewriting.Frontiers in psychology · 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
- Muscle activity, time to fatigue, and maximum task duration at different levels of production standard time.Journal of physical therapy science · 2015Article
- Associations between cervical and scapular posture and the spatial distribution of trapezius muscle activity.Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology · 2014Article
- Muscle modifications in fibromyalgic patients revealed by surface electromyography (SEMG) analysis.BMC musculoskeletal disorders · 2009Article
- Temporal change in bimanual interkeypress intervals and self-reported symptoms during continuous typing.Journal of occupational rehabilitation · 2008Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The purpose of the present study was to investigate the development and recovery of muscle fatigue in the upper trapezius muscle by analyzing electromyographic signals. Six male subjects performed a simulated typewriting task for four 25-min sessions. During fatigue and the following rest periods, subjective fatigue and surface electromyography (EMG) from the trapezius muscle during isometric contraction at 30% maximum voluntary contraction (MVC) were periodically measured in the interval. We detected a significant decrease in muscle fiber conduction velocity (MFCV) (P = 0.008) and median frequency (MDF) (P = 0.026) as well as an increase in root mean square (RMS) (P = 0.039) and subjective fatigue (P = 0.0004) during the fatigue period. During the recovery period, subjective fatigue decreased drastically and significantly (P = 0.0004), however, the EMG parameters did not recover completely. Thus, physiological muscle fatigue in the trapezius developed in accordance with subjective muscle fatigue during typewriting. On the other hand, differences between the physiological and subjective parameters were found during recovery. Further studies should be necessary to reveal the discrepancy could be a major factor of a transition from temporal phenomena to serious chronic muscle fatigue and to identify the necessity of some guidelines to prevent VDT work-related chronic muscle fatigue in the trapezius.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.