[Study on hydrodynamic pressure of lumbar intervertebral disc].
D000293:Adolescent; D000328:Adult; D001416:Back Pain / Q000209:etiology; D006801:Humans; D007403:Intervertebral Disc / Q000502:physiology*; D008159:Lumbar Vertebrae / Q000502:physiology*; D008722:Methods; D008875:Middle Aged; D011187:Posture; D011312:Pressure