Intra-abdominal pressure increases stiffness of the lumbar spine.

@article{Hodges2005IntraabdominalPI,
  title={Intra-abdominal pressure increases stiffness of the lumbar spine.},
  author={Paul William Hodges and Axel Martin Eriksson and Debra J. Shirley and Simon C. Gandevia},
  journal={Journal of biomechanics},
  year={2005},
  volume={38 9},
  pages={
          1873-80
        }
}
Intra-abdominal pressure (IAP) increases during many tasks and has been argued to increase stability and stiffness of the spine. Although several studies have shown a relationship between the IAP increase and spinal stability, it has been impossible to determine whether this augmentation of mechanical support for the spine is due to the increase in IAP or the abdominal muscle activity which contributes to it. The present study determined whether spinal stiffness increased when IAP increased… CONTINUE READING
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