The role of intra-abdominal pressure in spinal unloading.

  title={The role of intra-abdominal pressure in spinal unloading.},
  author={Karl Daggfeldt and Alf Thorstensson},
  journal={Journal of biomechanics},
  volume={30 11-12},
Previous studies on how an increase in intra-abdominal pressure (IAP) effects the loading of the lumbar spine during back extension show diverging results. From a critical review of the literature we deduce a simplified, but consistent, model of the mechanisms involved in IAP-induced unloading of the lumbar spine. The model is then expanded by explicitly incorporating equilibrium equations for the pressurised abdomen and the abdominal wall. It is shown that the unloading effect of IAP can be… CONTINUE READING