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CISDOC database

Document ID (ISN)110774
CIS number 10-0419
ISSN - Serial title 0003-6870 - Applied Ergonomics
Year 2010
Convention or series no.
Author(s) Porter W., Gallagher S., Torma-Krajewski J.
Title Analysis of applied forces and electromyography of back and shoulders muscles when performing a simulated hand scaling task
Bibliographic information May 2010, Vol.41, No.4, p.411-416. Illus. 12 ref.
Internet access Analysis_of_applied_forces.pdf [in English]
Abstract Hand scaling is a physically-demanding task responsible for numerous overexertion injuries in underground mining. It requires the miner to use a long pry bar to remove loose rock, reducing the likelihood of rock fall injuries. The experiments described in this article simulated "rib" scaling (scaling a mine wall) from an elevated bucket to examine force generation and electromyographic responses using two types of scaling bars (steel and fiberglass-reinforced aluminum) at five target heights ranging from floor level to 176 cm. Ten male and six female subjects were tested in separate experiments. Peak and average force applied at the scaling bar tip and normalized electromyography of the left and right pairs of the deltoid and erectores spinae muscles were obtained. Findings are discussed.
Descriptors (primary) hand tools; underground mining; physical workload; measurement of physical workload
Descriptors (secondary) muscular strength; electromyography; ergonomic evaluation; sex-linked differences
Document type D - Periodical articles
Subject(s) Ergonomics and work organization
Broad subject area(s) Physiology, ergonomics
Browse category(ies) Mining and quarrying
Hand and portable tools