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An investigation of the variability in human performance during sagittally symmetric lifting tasks.

Authors
Mirka-GA; Baker-A
Source
IIE Trans 1996 Sep; 28(9):745-752
Link
NIOSHTIC No.
20001023
Abstract
The goal of the current study was to quantify the variability in human performance during sagittally symmetric lifting tasks. In this study, measures of human performance were limited to the three-dimensional kinematics of the lumbar region of the torso and the torque developed about the lumbosacral joint. The results of the kinematic analysis showed significant variability in the magnitude of the peak velocity and acceleration in the sagittal plane and also showed significant motion in the transverse and coronal planes, even though these were sagittally symmetric lifting tasks. The kinetic analysis showed an increase in the variability of the magnitude of the peak dynamic torque with greater levels of load, whereas coupling showed little effect on the magnitude of this variability.
Keywords
Manual-materials-handling; Manual-lifting; Mathematical-models; Ergonomics; Musculoskeletal-system-disorders; Biomechanics; Back-injuries
Contact
North Carolina State University, Department of Industrial Engineering, Raleigh, North Carolina
CODEN
IIETDM
Publication Date
19960901
Document Type
Journal Article
Funding Amount
158477
Funding Type
Grant
Fiscal Year
1996
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-K01-OH-00135
Issue of Publication
9
NIOSH Division
OD
Source Name
IIE Transactions
State
NC
Performing Organization
Department of Industrial Engineering, College of Engineering, North Carolina State University
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