Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

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

Authors
Nussbaum-MA; Johnson-H
Source
Hum Factors 2002 Winter; 44(4):545-556
NIOSHTIC No.
20031283
Abstract
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.
Keywords
Data-processing; Demographic-characteristics; Age-factors; Age-groups; Sex-factors; Physiology
CODEN
HUFAA6
Publication Date
20021201
Document Type
Journal Article
Email Address
nussbaum@vt.edu
Funding Type
Grant
Fiscal Year
2003
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-T01-OH-008613
Issue of Publication
4
ISSN
0018-7208
Source Name
Human Factors
State
VA
Performing Organization
Department of Industrial and Systems Engineering, Virginia Tech University, Blacksburg, Virginia
TOP