Campus Units

Industrial and Manufacturing Systems Engineering

Document Type

Article

Publication Version

Published Version

Publication Date

11-2011

Journal or Book Title

Applied Ergonomics

Volume

42

Issue

6

First Page

861

Last Page

872

Research Focus Area(s)

Ergonomics and Human Factors

DOI

10.1016/j.apergo.2011.02.003

Abstract

Leaning against a stationary barrier during manual materials handling tasks is observed in many industrial environments, but the effects of this kinematic constraint on low back mechanics are unknown. Thirteen participants performed two-handed lifting tasks using both a leaning posture and no leaning posture while trunk kinematics, muscle activity and ground reaction force were monitored. Results revealed that lifting with the leaning posture required significantly less activity in erector spinae (26% vs. 36% MVC) and latissimus dorsi (8% vs. 14% MVC), and less passive tissue moment compared with the no leaning posture. Peak sagittal accelerations were lower when leaning, but the leaning posture also had significantly higher slip potential as measured by required coefficient of friction (0.05 vs. 0.36). The results suggested that the leaning lifting strategy provides reduced low back stress, but does so at the cost of increased slip potential.

Comments

This is a manuscript of an article from Applied Ergonomics, 42: 867-872, (DOI:10.1016/j.apergo.2011.02.003). © 2011. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/

Copyright Owner

Elsevier, B.V.

Language

en

File Format

application/pdf

Published Version

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