Powiadomienia systemowe
- Sesja wygasła!
- Sesja wygasła!
- Sesja wygasła!
- Sesja wygasła!
- Sesja wygasła!
- Sesja wygasła!
- Sesja wygasła!
- Sesja wygasła!
- Sesja wygasła!
- Sesja wygasła!
Identyfikatory
Warianty tytułu
Języki publikacji
Abstrakty
The aim of this study was to verify a theoretical model for upper extremity work space optimization. In order to do that, experimental studies were conducted in which two parameters of the electromyography (EMG) signal were analyzed: AMP (amplitude calculated as Root Mean Square) and SZC (coefficient of the slope of the regression line between time and Zero Crossing values). Values of forces in muscles (parameter MOD) were calculated from theoretical studies. A comparison of experimental (AMP, SZC) and theoretical (MOD) parameters was performed by analyzing the coefficient of correlation between those parameters and differentiation of muscular load according to external load value. Analysis showed that the theoretical and experimental results are in step, which means that the developed model can be used for upper extremity work space optimization.
Wydawca
Rocznik
Tom
Strony
109--124
Opis fizyczny
Bibliogr. 21 poz., rys., wykr.
Twórcy
autor
- Central Institute for Labour Protection, Poland
autor
- Warsaw University of Technology, Poland
Bibliografia
- [1] Basmajian, J.V., & DeLuca, C.J. (1985). Muscles alive-Their functions revealed by electromyography (5th ed.). Baltimore: Williams & Wilkins.
- [2] Christensen, H. (1986a). Muscle activity and fatigue in the shoulder muscles of assembly-plant employees. Scandinavian Journal of Work Environment Health, 12, 582-587.
- [3] Christensen, H. (1986b). Muscle activity and fatigue in the shoulder muscles during repetitive work. European Journal of Applied Physiology, 54, 596-601.
- [4] Corlett, N. (1990). Analysis and evaluation of working posture. Workstation design. Guidford, UK: Butterworth Scientific.
- [5] DeLuca, C.J., Sabbahi, M., & Roy, S. (1986). Median frequency of the myoelectric signal, efects of hand dominance. European Journal of Applied Physiology, 55, 457-464.
- [6] Dieen, J.H., Toussaint, H.M., Thissen, C., & Ven, A. (1993). Spectral analysis of erector spinae EMG during interm ittent isometric fatigue exercise. Ergonomics, 36, 407-414.
- [7] Fallentin, N., Sidenius, B., & Jorgensen, K. (1985). Blood pressure, heart rate and EMG in low level static contractions. Acta Physiologica Scandinavica, 125, 265-275.
- [8] Funderburgh, C.F., Hipskind, S.G., Welton, R.C., & Lind, A.R. (1974). Development of and recovery from fatigue induced by static effort at various tension. Journal of Applied Physiology, 37, 392-396.
- [9] Gerdle, B., Wretling, M.-L., & Henriksson-Larsen, K. (1988). Do the fiber type proportion and angular velocity influence the mean power frequency of the electromyogram? Acta Physiologica Scandinavica, 134, 341-346.
- [10] Hagberg, C., & Hagberg, M. (1989). Surface EMG amplitude and frequency dependence on exerted force for the upper trapezius muscle: A comparison between right and left sides. European Journal of Applied Physiology, 58, 641-645.
- [11] Hägg, G. (1981). Electromyographic fatigue analysis based on the number of zero crossing. European Journal of Physiology, 391, 78-80.
- [12] Hägg, G., & Suurküla, J. (1991). Zero crossing rate of electromyograms during occupational work and endurance tests as predictors for work related myalgia in the shoulder/neck region. European Journal o f Applied Physiology, 62, 436-444.
- [13] Hägg, G., Suurküla, J., & Liew, M. (1987). A worksite method for shoulder muscle fatigue measurements using EMG test contractions and zero crossing technique. Ergonomics, 11, 1541-1551.
- [14] Jörgensen, K., Fallentin, N., Krogh-Lund, C., & Jensen, B. (1988). Electromyography and fatigue during prolonged low-level static contractions. European Journal of Applied Physiology, 57, 316-321.
- [15] Kilbom, Å., Gamberale, F., Persson, J., & Annwall, G. (1983). Physiological and psychological indecsis of fatigue during static contractions. European Journal of Applied Physiology, 50, 179-193.
- [16] Lannersten, L., & Harms-Ringdahl, K. (1990). Neck and shoulder muscle activity during work with different cash register systems. Ergonomics, 33, 49-65.
- [17] Lawrence, J.H., & DeLuca, C.J. (1983). Myoelectric signal versus force relationship in different human muscles. Journal of Applied Physiology, 54, 1653-1659.
- [18] Mirka, G.A. (1991). The quantification of EM G normalization error. Ergonomics, 34, 343-352.
- [19] Roman-Liu, D., Wittek, A., & Kędzior, K. (1996). Musculoskeletal load assessment of the upper limb positions subjectively chosen as the most convenient. International Journal of Occupational Safety and Ergonomics, 2, 273-283.
- [20] Suurküla, J., & Hägg, G. (1987). Relations between shoulder/neck disorders and EMG zero crossing shifts in female assembly workers using the test contraction method. Ergonomics, 30, 153-156.
- [21] Zatsiorsky, V.M., Aruin, A.S., & Sieluyanov, V.N. (1981). Biomechanika dvigatielnovo apparata chelovyeka [Biomechanics of human motion system], Moscow: Fizkultura i Sport.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-57fc8fc3-a908-4c51-b835-cb4e0e159b88