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Understanding the Effect of Speed of Exertion on Isokinetic Strength Using a Multiaxial Dynamometer

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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
In this study a multiaxial isokinetic dynamometer was used to measure strength during various upper-body isokinetic exertions. Ten male participants performed 7 different upper-body isokinetic exertions. In addition, to evaluate the effect of speed on strength, each participant performed sitting pull exertions at the speed of 0.026, 0.130, and 0.260 m/s. Average isokinetic strength increased from 236.6 ± 39.1 to 291.8 ± 65.8 N with the initial increase in speed from 0.026 to 0.130 m/s. The average isokinetic strength decreased to 276.7 ± 87.2 N with a further increase in speed to 0.260 m/s. The curve between isokinetic strength and speed followed a bell-shaped curve (fitted with the Gaussian function, R2 = .9). The results of this study could be useful in deciding on the work pace of various manual material handling tasks requiring maximal and/or near maximal exertions.
Słowa kluczowe
Rocznik
Strony
255--263
Opis fizyczny
Bibliogr. 16 poz., rys., tab., wykr.
Twórcy
  • Department of Construction Management and Industrial Engineering, Louisiana State University, Baton Rouge, USA
autor
  • Department of Construction Management and Industrial Engineering, Louisiana State University, Baton Rouge, USA
  • Department of Construction Management and Industrial Engineering, Louisiana State University, Baton Rouge, USA
autor
  • NASA’s Johnson Space Center, Houston, TX, USA
Bibliografia
  • 1.Aghazadeh F, Waly SM, Nason J. Static and dynamic strengths of males and females in seating and standing postures. In: Das B, Karwowski W, editors. Advances in occupational ergonomics and safety 1997. Amsterdam, The Netherlands: IOS Press;1997. p. 293–6.
  • 2.Chaffin DB, Andersson GBJ. Occupational biomechanics. New York, NY, USA: Wiley-Interscience; 1999.
  • 3.Hettinger T. Physiology of strength. Springfield, IL, USA: Thomas; 1961.
  • 4.Mital A, Das B. Human strengths and occupational safety. Clin Biomech. 1987; 2:97–106.
  • 5.Roebuck JA, Kroemer KHE, Thomson WG. Engineering anthropometry methods. New York, NY, USA: Wiley; 1975.
  • 6.Carlson BR. Level of maxinum isometric strength and relative load isometric endurance. Ergonomics. 1969;12(3):429–35.
  • 7.Heyward VH. Influence of static strength and intramuscular occlusion on submaximal static muscle endurance. Res Q. 1975;46(4):393–402.
  • 8.Martens R, Sharkey BJ. Relationship of phasic and static strength and endurance. Res Q. 1966;37(3):435–7.
  • 9.Noble L, McCraw LW. Comparative effects of isometric and isotonic traning programs on relative-load endurance and work capacity. Res Q. 1973;44(1):96–108.
  • 10.Start KB Graham JS. Relationship between the relative and absolute isometric endurance of an isolated muscle group. Res Q. 1964;35:193–204.
  • 11.Caldwell LS. Measurement of static muscle endurance. J Eng Psychol. 1964;3(1):16–22.
  • 12.Garg A, Hegmann KT, Schwoerer BJ, Kapellusch JM. The effect of maximum voluntary contraction on endurance times for the shoulder girdle. Int J Ind Ergon. 2002;30(2):103–13.
  • 13.Mital A, Channaveeraiah C, Fard HF, Khaledi H. Reliability of repetitive dynamic strengths as a screening tool for manual lifting tasks. Clin Biomech. 1986; 1(3):125–9.
  • 14.Garg A, Beller D. A comparison of isokinetic lifting strength with static strength and maximum acceptable weight with special reference to speed of lifting. Ergonomics. 1994;37(8):1363–74.
  • 15.Shklar A, Dvir Z. Isokinetic strength relationships in shoulder muscles. Clin Biomech. 1995;10(7):369–73.
  • 16.Gaines JM, Talbot LA. Isokinetic strength testing in research and practice. Biol Res Nurs. 1999;1(1):57–64.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-fe43bfb4-0759-43d1-b060-aee63f48d135
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