Human-Computer Interaction: Ergonomics and User Interfaces - Vol. 1

By Hans-Jörg Bullinger; Jürgen Ziegler | Go to book overview
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4
Conclusion

Forearm muscle fatigue, measured as a decrease in mean power frequency could be documented during four hours of intensive computer mouse work.

Electromyographical signs of muscle fatigue were found for forearm extensor as well as forearm flexor muscles.

No difference regarding relative change in mean power frequency was found between the young and the elderly group.

Finally, the total number of mouse clicks per unit of time is not related to the degree of forearm muscle fatigue and can therefore not be used as a predictor for development of electromyographical signs of fatigue during prolonged computer work.


5
References

Cole, K. J. ( 1991). "Grasp Force Control in Older Adults". Journal of Motor behavior. 23, ( 4), 251-258.

Davis, C. T. M., Thomas, D. O. and White, M. J. ( 1986). "Mechanical Proporties of Young and Elderly Human Muscle". Acta Med Scand, Suppl. 711, 219-226.

Gangalski, M. E., Fuglevand, A. J. and Enoka, R. M. ( 1993). "Reduced Control of Motor Output in a Human Hand Muscle of Elderly Subjects During Submaximal Contractions". Journal of Electrophysiology. 69, ( 6), 2108-2115.

Grimby, G. and Saltin, B. ( 1983). "Review. The aging muscle". Clin Physiology, 3, 209-218.

Klein,,. Cunningham, D. A., Paterson, D. H. and Taylor, A. W. ( 1988). "Fatigue and recovery contractile properties of young and elderly men". Eur J Appl Physiol. 57, 684-690.

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