Research article summary:

Determination and evaluation of acceptable force limits in single-digit tasks.

Abstract Extract:
Acceptable limits derived from psychophysical methodologies have been proposed, measured, and employed in a range of applications. There is little existing work, however, on such limits for single-digit exertions and relatively limited evidence on ... (Full abstract text below)

Published 2002 in Journal: Hum Factors (Language : eng)

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1. Hum Factors. 2002 ;44(4):545-56

Determination and evaluation of acceptable force limits in single-digit tasks.

Nussbaum MA, Johnson H

Department of Industrial and Systems Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA. nussbaum@vt.edu

Acceptable limits derived from psychophysical methodologies have been proposed, measured, and employed in a range of applications. There is little existing work, however, on such limits for single-digit exertions and relatively limited evidence on several fundamental issues related to data collection and processing of a sequence of self-regulated exertion levels. An experimental study was conducted using 14 male and 10 female participants (age range 18-31 years) from whom maximal voluntary exertions and maximal acceptable limits (MALs) were obtained using the index finger and thumb. Moderate to high levels of consistency were found for both measures between sessions separated by one day. Single MAL values, determined from a time series of exertions, were equivalent across three divergent processing methods and between values obtained from 5- and 25-min samples. A critical interpretation of these and earlier results supports continued use of acceptable limits but also suggests that they should be used with some caution and not equated with safe limits. This research can be applied toward future development of exertion limits based on perceived acceptability.

PMID : 12691364 [PubMed - Indexed for MEDLINE]

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Full Author Information

First Name	LastName	Initials
Maury A	Nussbaum	MA
Hope	Johnson	H

Affiliation: Department of Industrial and Systems Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA. nussbaum@vt.edu

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