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Human posture simulation to assess cumulative spinal load due to manual lifting. Part II: accuracy and precision.

Authors
Lu-M-L; Waters-T; Werren-D; Piacitelli-L
Source
Theor Issues Ergon Sci 2011 Mar; 12(2):189-203
NIOSHTIC No.
20038249
Abstract
For assessing a large number of variable manual lifting jobs, posture specification for using the University of Michigan Three Dimensional Static Strength Prediction Program and the revised National Institute for Occupational Safety and Health Lifting Equation may be time-consuming, tedious and subject to human errors. To expedite data analysis with desirable accuracy and precision for the two risk assessment tools, a new data analysis method based on human posture simulation was developed and evaluated. The accuracy and precision of the posture simulation method were evaluated by a repeated measures study design with six postures, three viewing angles and three trial repetitions as experimental factors. The effects of the experimental factors on the average accuracy and precision of the simulation method are reported and discussed. The study results also demonstrated pros and cons of human posture simulation as a means of posture specification for ergonomic risk assessments. The findings about the accuracy and precision of the human posture simulation method for quantifying the risk of musculoskeletal disorders due to manual materials handling may provide researchers with a new way of ergonomic assessments.
Keywords
Ergonomics; Musculoskeletal-system; Humans; Spinal-cord; Spinal-shock; Posture; Manual-lifting; Manual-materials-handling; Cumulative-trauma; Risk-analysis; Analytical-methods; Simulation-methods; Exposure-assessment; Author Keywords: human posture simulation; lifting index; manual lifting; Three Dimensional Static Strength Prediction Program
Contact
M-L. Lu, National Institute for Occupational Health and Safety, Division of Applied Research and Technology,4676 Columbia Parkway, MS C-24, Cincinnati 45226, OH, USA
Publication Date
20110301
Document Type
Journal Article
Email Address
mlu@cdc.gov
Fiscal Year
2011
NTIS Accession No.
NTIS Price
Issue of Publication
2
ISSN
1463-922X
NIOSH Division
DART
Source Name
Theoretical Issues in Ergonomics Science
State
OH
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