Biomechanical risk factors for occupationally related low back disorders

Article Abstract:

Examination of medical records in industry and electrogonimetric studies of the lumbar spine movement in workers, while doing low medium and high risk lifting jobs, reveals that the occurrence of occupationally-related low back disorders (LBD) are influenced mainly by five factors. The factors are trunk sagittal angle, trunk lateral velocity, trunk twisting velocity, lifting frequency and load movement. The risks related to high risk jobs can be reduced more than ten times by varying the five factors suitably.

Analysis, Occupational health and safety, Occupational safety and health, Causes of, Backache, Back pain

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The influence of lift frequency, lift duration and work experience on discomfort reporting

Article Abstract:

A study examined the connection between reports of discomfort and work-related risk factors for the low back in order to better understand the relationship of discomfort to work-related factors. It was concluded that biomechanical loading might not be correctly represented and as such it was necessary to be cautious about using the discomfort reporting to identify jobs that required interventions.

Risk factors, Low back pain

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Changes in trunk muscle activation and lumbar-pelvic position associated with abdominal hollowing and reach during a simulated manual material handling task

Article Abstract:

The effect of abdominal hollowing (AH) on trunk muscle activation and lumbar-pelvic motion during a controlled lift and replace task was investigated with the use of electromyograms. It was observed that abdominal muscle activation amplitudes were altered by the AH technique and compared to the PLS (preferred lifting style), there were minimal differences in trunk extensors.

Abdomen, Abdominal muscles

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