Shirley, D Spinal stiffness changes throughout the respiratory cycle. [electronic resource] - Journal of applied physiology (Bethesda, Md. : 1985) Oct 2003 - 1467-75 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 8750-7587 Standard No.: 10.1152/japplphysiol.00939.2002 doi Subjects--Topical Terms: Abdomen--physiologyAdultElasticityElectromyographyExhalation--physiologyFunctional Residual CapacityHumansInhalation--physiologyLumbar Vertebrae--physiologyMiddle AgedMuscle, Skeletal--physiologyPressureResidual VolumeRespiratory Physiological PhenomenaTidal VolumeTotal Lung Capacity