Spine loading at different lumbar levels during pushing and pulling.

@article{Knapik2009SpineLA,
  title={Spine loading at different lumbar levels during pushing and pulling.},
  author={Gregory G. Knapik and William S. Marras},
  journal={Ergonomics},
  year={2009},
  volume={52 1},
  pages={60-70}
}
As the nature of many materials handling tasks have begun to change from lifting to pushing and pulling, it is important that one understands the biomechanical nature of the risk to which the lumbar spine is exposed. Most previous assessments of push-pull tasks have employed models that may not be sensitive enough to consider the effects of the antagonistic cocontraction occurring during complex pushing and pulling motions in understanding the risk to the spine and the few that have considered… CONTINUE READING