The effects of lifting speed on the peak external forward bending, lateral bending, and twisting spine movements

Article Abstract:

There clearly is an association between lifting and low-back pain. A study was conducted to further investigate the link between lifting speed and the peak external moments computed with a three-dimensional biomechanical model in three lifting tasks typically observed in industry. The extent to which the magnitude of the load handled and the initial horizontal distance interacts with the lifting speed during sagittally symmetric and asymmetric lifts from low levels was also investigated. Results are discussed.

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Influence of body segment dynamics on loads at the lumbar spine during lifting

Article Abstract:

Kinematic studies of trunk motions during lifting show that load weight is a consistent factor in moment induction. Static analysis ignore speed factors while dynamic analysis considerthe effects of acceleration of the load and body segments involved in the effort. Thus, static analysis consistently underestimates lift moments and required forces. It has been established that lifting motions are a major causeof back pains in the industrial environment.

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Predicting the vertebral inclination of the lumbar spine

Article Abstract:

A new study investigates the accuracy of the external stick marker method to measure the vertebral inclination of the lumbar spine. It is shown that the method underestimates vertebral inclination.

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