Effects of the Mechanical Load on Forward Bending Motion of the Trunk
- 1 January 2007
- journal article
- Published by Wolters Kluwer Health in Spine
- Vol. 32 (2) , E73-E78
- https://doi.org/10.1097/01.brs.0000252203.16357.9a
Abstract
Postural changes and trunk muscle activities were examined in patients with motion-induced intermittent low back pain (MILBP) and healthy controls. To assess the ability to maintain an upright standing position. Since MILBP is not observed at rest, its pathophysiology is complicated to investigate. METHODS.: Postural changes were measured with a 3-dimensional motion analyzer, and muscle activities with a surface electromyography while 10 female patients at an average age of 76 years (MILBP group) and 10 healthy controls at an average age of 74 years (Control Group) were standing upright and loaded with 10-kg weights. In the Control Group, no significant forward bending motion occurred. In the MILBP group, there was a temporal increase in forward bending at various speeds and at various time phases. In the MILBP group but not in the Control Group, the rate of changes in median power frequency of erector spinae muscle declined significantly as compared with that in the Control Group (P < 0.05). These results indicated that fatigue of the back muscles occurred in MILBP patients and could be a pain generator in low back pain.Keywords
This publication has 9 references indexed in Scilit:
- Mechanical Load of the Lumbar Spine During Forward Bending Motion of the Trunk–A Biomechanical StudySpine, 2006
- CT imaging of trunk muscles in chronic low back pain patients and healthy control subjectsEuropean Spine Journal, 2000
- Influence of age and duration of symptoms on fibre type distribution and size of the back muscles in chronic low back pain patientsEuropean Spine Journal, 2000
- The Relationship Between Intramuscular Pressure of the Paraspinal Muscles and Low Back PainSpine, 1994
- Lumbar Myoelectric Spectral Analysis for Endurance AssessmentSpine, 1989
- New method for the non-invasive three-dimensional measurement of human back movementClinical Biomechanics, 1989
- Lumbar Degenerative KyphosisSpine, 1988
- Application of a magnetic tracking device to kinesiologic studiesJournal of Biomechanics, 1988
- Intramuscular and surface electromyogram changes during muscle fatigueJournal of Applied Physiology, 1986