Biomechanical effects of sitting with adjustable ischial and lumbar support on occupational low back pain: evaluation of sitting load and back muscle activity |
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| Authors: | Mohsen Makhsous Fang Lin James Bankard Ronald W Hendrix Matthew Hepler Joel Press |
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| Affiliation: | (1) Department of Physical Therapy and Human Movement Sciences, Northwestern University, Chicago, IL, USA;(2) Department of Physical Medicine & Rehabilitation, Northwestern University, Chicago, IL, USA;(3) Department of Orthopaedic Surgery, Northwestern University, Chicago, IL, USA;(4) Department of Radiology, Northwestern University, Chicago, IL, USA;(5) Department of Sensory Motor Performance Program, Rehabilitation Institute of Chicago, Chicago, IL, USA |
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| Abstract: | Background Compared to standing posture, sitting decreases lumbar lordosis, increases low back muscle activity, disc pressure, and pressure on the ischium, which are associated with occupational LBP. A sitting device that reduces spinal load and low back muscle activities may help increase sitting comfort and reduce LBP risk. The objective of this study is to investigate the biomechanical effect of sitting with a reduced ischial support and an enhanced lumbar support (Off-Loading) on load, interface pressure and muscle activities. |
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