Title
Fatigue effects on tracking performance and muscle activity
Author
Huysmans, M.A.
Hoozemans, M.J.M.
van der Beek, A.J.
de Looze, M.P.
van Dieën, J.H.
TNO Kwaliteit van Leven
Publication year
2008
Abstract
It has been suggested that fatigue affects proprioception and consequently movement accuracy, the effects of which may be counteracted by increased muscle activity. To determine the effects of fatigue on tracking performance and muscle activity in the M. extensor carpi radialis (ECR), 11 female participants performed a 2-min tracking task with a computer mouse, before and immediately after a fatiguing wrist extension protocol. Tracking performance was significantly affected by fatigue. Percentage time on target was significantly lower in the first half of the task after the fatigue protocol, but was unaffected in the latter half of the task. Mean distance to target and the standard deviation of the distance to target were both increased after the fatigue protocol. The changed performance was accompanied by higher peak EMG amplitudes in the ECR, whereas the static and the median EMG levels were not affected. The results of this study showed that subjects changed tracking performance when fatigued in order to meet the task instruction to stay on target. Contrary to our expectations, this did not lead to an overall higher muscle activity, but to a selective increase in peak muscle activity levels of the ECR. © 2006 Elsevier Ltd. All rights reserved.
Subject
Healthy for Life
Ergonomics
Healthy Living
Arbeidsproductiviteit
Accuracy
EMG
Hand-arm symptoms
Localized muscle fatigue
adult
article
computer mouse
controlled study
electromyogram
female
hand muscle
human
human experiment
motor performance
muscle contraction
muscle fatigue
normal human
priority journal
task performance
wrist
Adult
Computer Peripherals
Electromyography
Female
Humans
Movement
Muscle Fatigue
Psychomotor Performance
Reference Values
Students
Time Factors
Wrist Joint
To reference this document use:
http://resolver.tudelft.nl/uuid:768c0348-665f-4feb-9544-1d12a18a4288
DOI
https://doi.org/10.1016/j.jelekin.2006.11.003
TNO identifier
240822
ISSN
1050-6411
Source
Journal of Electromyography and Kinesiology, 18 (3), 410-419
Document type
article