Effect of friction and load on pinch force in a hand transfer task

Ergonomics
L J Frederick, T J Armstrong

Abstract

The effect of friction and load on pinch force was studied in a simple hand transfer task using a repeated measures design and ten men. Subjects moved a container between two targets, 450 mm apart, at a slow, self-paced speed. The levels of mass in the container were set at 0.8, 2.5 and 4.2 kg (7.5, 24.5 and 41.5 N respectively). The handle materials were sandpaper and smooth aluminum. Applied pinch force was measured via a strain gauge mounted in a specially-designed handle attached to the container. Dependent variables were peak and 'steady-state' pinch force. The main and interaction effects of load and friction were significant. The friction effect was significant only for the highest load which, on average, elicited peak pinch forces of 16-70% of maximum voluntary force. This suggests that these men were not sensitive to friction effects at the lower loads. Results suggest that the use of tool handle friction enhancements may reduce required pinch forces for objects requiring upwards of 50% or more of maximum pinch strength.

References

Jan 1, 1987·American Journal of Industrial Medicine·B A SilversteinT J Armstrong
Jan 1, 1985·American Journal of Industrial Medicine·T J Armstrong
Jan 1, 1971·The British Journal of Dermatology·S Comaish, E Bottoms
Jun 1, 1983·Scandinavian Journal of Work, Environment & Health·B Falck, P Aarnio
Jan 1, 1984·Experimental Brain Research·G Westling, R S Johansson
Jan 1, 1981·Medical & Biological Engineering & Computing·C N Pronk, R Niesing
Jul 1, 1951·British Journal of Industrial Medicine·A R THOMPSONE G SHAW

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Citations

Feb 12, 1999·Ergonomics·T ArmstrongG Sjøgaard
Nov 12, 2013·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Pilwon HurNa Jin Seo
Jan 18, 2003·Assistive Technology : the Official Journal of RESNA·T J ArmstrongR Werner
Jul 17, 2012·Journal of Hand Therapy : Official Journal of the American Society of Hand Therapists·Na Jin Seo, Leah R Enders
Oct 21, 2006·Journal of Biomechanics·Alfredo VillanuevaDavid Rempel
Mar 10, 2006·Journal of Biomechanics·Charles LarocheDavid Rempel
Jan 13, 2012·Human Factors·Na Jin SeoLeah R Enders
Oct 6, 2007·Human Factors·D Christian Grieshaber, Thomas J Armstrong

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