Biomechanically and electromyographically assessed load on the spine in self-paced and force-paced lifting work
Article Abstract:
The mechanical load on the spine under various lifting conditions were experimentally examined as a function of pacing situations. The study subjected five women and five men to carry a weight up and down for 30 minutes under forced-paced and self-paced conditions. The derived spinal loads, which are in terms of biomechanically-computed compressive forces and electromyographical movements of back muscles, show a higher lift rate for females in self-paced tasks.
Publication Name: Ergonomics
Subject: Business
ISSN: 0014-0139
Year: 1992
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Prediction of the maximum acceptable weight of symmetrical and asymmetrical lift using direct estimation method
Article Abstract:
An experimental comparison between the psychophysical approach and the direct estimation method is presented. The two are used to gauge a materials handler's maximum acceptable weight of lift for symmetrical and asymmetrical lifting jobs. Their utility in 16 lifting chores of varying lifting angles and lifting frequencies carried out by ten male volunteers demonstrates the superiority of the direct estimation technique under low lifting frequencies.
Publication Name: Ergonomics
Subject: Business
ISSN: 0014-0139
Year: 1992
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The load on the lumbar spine during asymmetrical bi-manual materials handling
Article Abstract:
The load on the lumbar spine when a person performs asymmetrical bi-manual materials handling was investigated. The study, which used a three-dimensional biomechanical human model for computer simulation, took into account the body side turning, trunk bending, sagittal flexion and spinal lateral tilting. It drew load characteristic data concerning the lumbrosacral disc for different cases of diagonal lifting.
Publication Name: Ergonomics
Subject: Business
ISSN: 0014-0139
Year: 1992
User Contributions:
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- Abstracts: The effects of speed, frequency, and load on measured hand forces for a floor to knuckle lifting task. Problems and solutions in manual materials handling: the state of the art
- Abstracts: Discriminability of load heaviness: implications for the psychophysical approach to manual lifting. Psychophysical capacity of industrial workers for lifting symmetrical and asymmetrical loads symmetrically and asymmetrically for 8 h work shifts