An experiment on repetitive hand-gripping tasks was conducted to determine the functional relationship between the maximum grip strength and number of trials. Nine male subjects performed 30 gripping trials at their maximum strengths with 15-sec. rests between trials. Performance dropped significantly after two trials. Over-all, there was a 30% drop in maximum grip strength after 30 trials. The decrease in strength over trials is described by a logarithmic function.
Get full access to this article
View all access options for this article.
References
1.
BraudW. G. (1989) A possible proximity effect on human grip strength: An attempted replication. Perceptual and Motor Skills, 68, 157–158.
2.
GrandjeanE. (1988) Fitting the task to the man. (4th ed.) Philadelphia, PA: Taylor & Francis.
3.
O'ConnellB. J.HarperR. S.McAndrewF. T. (1985) Grip strength as a function of exposure to red or green visual stimulation. Perceptual and Motor Skills, 61, 1157–1158.
4.
ReddonJ. R.StefanykW. O.GillD. M.RenneyC. (1985) Hand dynamometer: Effects of trials and sessions. Perceptual and Motor Skills, 61, 1195–1198.
5.
SandersM.McCormickE. (1987) Human factors in engineering and design. (5th ed.) New York: McGraw-Hill.
6.
WelfordA. T. (1968) Fundamentals of skill. London: Methuen.